Alstom MX3EG1A User manual

MX3EG1AMX3EG1A
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omom
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99
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Appositely left blankAppositely left blank

Appositely left blankAppositely left blank

pag. 3pag. 3
MDE/A133 2295 001MDE/A133 2295 001
MX3EG1AMX3EG1A
SUMMARYSUMMARY
1. 1.
TECHNICAL TECHNICAL
DATADATA
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55
2. 2.
GENERAL GENERAL
CHARACTERISTICSCHARACTERISTICS
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77
3. OPERATION3. OPERATION
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77
3.1 3.1
Parallel Parallel
sequence sequence
startstart
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77
3.2 3.2
Voltage Voltage
regulator. . . regulator. . .
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77
3.2.1 3.2.1
Max. Max.
deviation bar deviation bar
voltage/rated voltage/rated
voltagevoltage
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77
3.2.2 3.2.2
Min. Min.
generator generator
voltagevoltage
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77
3.2.3 3.2.3
Max. Max.
voltage voltage
differencedifference
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77
3.3 3.3
Frequency Frequency
regulatorregulator
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88
3.3.1 3.3.1
Max. Max.
deviation rated deviation rated
frequency/ frequency/
bar bar
frequencyfrequency
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88
3.3.2 3.3.2
Max. Max.
deviation rated deviation rated
frequency/ frequency/
generator generator
frequencyfrequency
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88
3.3.3 3.3.3
Max. Max.
frequency frequency
differencedifference
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88
3.4 3.4
Load Load
pulse pulse
and and
parallel parallel
commandcommand
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88
3.5 3.5
Dead-bar Dead-bar
modemode
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88
3.5.1 DB 3.5.1 DB
dead-bar mode dead-bar mode
OFFOFF
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88
3.5.2 DB dead-bar mode 3.5.2 DB dead-bar mode
ONON
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88
3.5.3 3.5.3
DB DB
dead-bar dead-bar
mode mode
ON-CHECKON-CHECK
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99
3.6 3.6
Main Main
and and
spare spare
settingssettings
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99
4. ADDITIONAL 4. ADDITIONAL
FUNCTIONSFUNCTIONS
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99
4.1 4.1
DiagnosticsDiagnostics
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99
4.2 Output 4.2 Output
circuitscircuits
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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99
4.3 4.3
LED LED
signalling circuitssignalling circuits
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1010
4.4 4.4
Digital Digital
inputsinputs
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1010
4.5 4.5
CountersCounters
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1010
4.6 4.6
Event Event
loglog
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1010
4.7 4.7
MeasurementMeasurement
ss
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1010
4.8 T4.8 T
estest
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1010
4.9 4.9
Alphanumeric Alphanumeric
codecode
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1111
4.10 4.10
LanguagLanguag
ee
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1111
4.11 L4.11 L
CD settingsCD settings
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1111
4.12 4.12
Inhibiting Inhibiting
operation-deconfiguration from operation-deconfiguration from
networknetwork
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1111
4.13 Serial 4.13 Serial
communication on communication on
LONWORKS (TMLONWORKS (TM
) )
busbus
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1111
4.14 4.14
RS485 RS485
serial comserial com
munication on munication on
MODBUS MODBUS
protocolprotocol
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1212
4.15 4.15
OscillopertuOscillopertu
rbographyrbography
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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1212
5. 5.
LOCAL LOCAL
INTERFACEINTERFACE
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MDE/A133 2295 001
MX3EG1A
6. LCD
MENU STRUCTURE
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14
6.1
MAIN
READ
ING
MENU
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14
6.1.1
Changin
g
dialogue
languag
e
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14
6.1.2
Changing
date
and
time
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15
6.1.3
Displaying
settings in
use
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . .
15
6.1.4
Displaying
main
settings
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
6.1.5
Displaying
spare
settings
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16
6.1.6
Displaying cur
rent
measurements
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16
6.1.7
Displaying
counters
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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16
6.1.8
Displaying
events
. . . . . . .
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.
17
6.1.9
Displaying
output
relays
. . . . . . .
. . . . . .
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17
6.1.10
Displaying
digital
inputs
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
17
6.1.11
Displaying
leds
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . .
18
6.1.12
Displaying
relay
data
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
18
6.1.13
Displaying
diagnostics
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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18
6.2
MAIN
SETT
ING
CHANG
E
MENU. .
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. .
19
6.2.1
Selecting
current
setting
group
. . . . . .
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.
20
6.2.2
Changing
main
settings
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20
6.2.3
Changing
spare
settings
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20
6.2.4
Setting
output
relays
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20
6.2.5
Setting
digital
inputs
. . . . . .
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. . . . . . .
. . . . . .
. . . . . . .
. . . . . . . . . .
. . . . . . .
. . . . . .
21
6.2.6
Setting
LEDs
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
21
6.2.7
Setting
alphanumeric
code
. . . . . .
. . . . . .
. . . . . . .
. . . . . .
. . . . . . .
. . . . . .
. . . . . . .
. . . . . . . .
. . . . . .
. . . .
21
6.2.8
LCD
back-lighting
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . .
.
21
6.3
TEST
MENU
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . .
. . . . . . .
. .
22
7.
APPLICATION
AND USE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . .
22
8. INSTALLATION
- TRANSPORT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
23
8.1 ESD
electrostatic charges
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . .
23
8.2
Acceptance-storage
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23
8.3
Assembling
and
connection
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23
9. SETTING THE UNIT AT WORK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . .
23
9.1
Safety
regulations
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . . .
. . . . . .
. . . . . . . .
. . . . . .
. . . . . . .
. . . . .
23
9.2
Checking
nameplate
ratings
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . .
23
9.3
Final
inspection
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
23
APPENDIX
A -
Network
data
exchange
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32

pag. 5
MDE/A133 2295 001
MX3EG1A
1. TECHNICAL DATA
The device belongs to the Modulex 3
line, and processes with a
numerical technique two phase voltages to
provide the automatic
synchronizati
on besides several
additional functions.
The user's interface is available locally through the presence of
a display unit and remotely through a LONWORKS
(TM)b
bus with
a control and monitoring system.
It is furthermore capable of dialoguing with a Personal Computer
through a special connector placed on the relay front and an
interface programme; this feature makes it easier and safer to
programme the setting and configure parameters and read the
set values, measurements and logged events; the programming
can also be performed from previously created file
s.
Control functions:

max. rated frequency/bar frequency deviation

max rated frequency/generator frequency deviation

max. rated voltage /bar voltage deviation

min. generator voltage value

max frequency difference

max. frequency voltage difference

max. phase difference

max. time for
parallel operat
ion execution

max. no.of parallel attempts

live bar/dead bar control

possibility of two settings groups - spare
and main settings
Measurements functions:

effect. Ub
bar voltage value expressed in
Ubn multiples

effect. Ug generator voltage value expressed in Ugn multiples

fb bar
frequency value expressed in
Hz

fg generator frequency value expresse
d in Hz

phase difference between bar voltage and Dp generator voltage
expressed in grades

logging of the last eight events with storage of
event type, date,
time, valuesof Ub,Ug, fb, fg, Dp
measurements, no. of parallel
attempts and parallel time

oscilloperturbography: recording, for a total time equalling 2.5
s, of the instant values (12 samples per period) of the inputs
measurements (Ub,Ug) and
of the
18 logical states among
which are digital inputs, end relays and leds

RCE: recording of the last 32 state changes (with relati
ve date
and time); they are only available through PC or network.
Other functions:

selection of rated frequency within 50Hz and 60Hz

selection of dialogue language (Italian, English, French and
Spanish)

self-monitor
ing with detailed
indication of the fault
and alarm
through LEDs and "normally ener
gized"
output relays (X6)

possibility of serial communication both with a local PC and on
LONWORKS
(TM)
bus

possibilit
y of assigning one or more functions of the device to
each output relay and each LED

possibility of setting all the output relays
to
"normally energized"
or "normally de-energized"

possibility of selecting, for each LED, the monostable or
bistable operating mode (stored)

optoinsulated digital inputs which can be programmed for
control and reset functions. These can be indi
vidually enabled
by normal energizing or de-energizing,
on front or o
on level.
They can also be used to control the continuity of the tripping
circuit

partial and total counter
s for each kind of event
MAIN SETTINGS
Main parameters
b
a
r
r
a
t
e
d
v
o
l
t
a
g
e
:
U
b
n
:
4
0
÷
1
3
0
V
g
e
n
e
r
a
t
o
r
r
a
t
e
d
v
o
l
t
a
g
e
:
U
g
n
:
4
0
÷
1
3
0
V
b
y
s
t
e
p
s
o
f
0
.
1
V
m
e
a
s
u
r
i
n
g
r
a
n
g
e
:
0
÷
2
0
0
V
op
er
.f
re
qu
en
cy
ra
ng
e
fo
r m
ea
su
re
me
nt
s
fo
r f
n
50
Hz
:
10 ÷ 6
0 Hz
ope
r.f
req
ue
nc
yc
a ra
nge
for
me
asu
rem
en
ts f
or f
n 60
Hz
:
10 ÷
72 Hz
p
e
r
m
a
n
e
n
t
o
v
e
r
l
o
a
d
i
n
g
:
2
0
0
V
o
v
e
r
l
o
a
d
i
n
g
f
o
r
1
0
s
:
2
5
0
V
burden with 100 V:
≤
0.6 VA per phase
Synchronization parameters
p
a
r
a
l
l
e
l
s
e
q
u
e
n
c
e
m
a
x
.
t
i
m
e
t
s
:
1
÷
3
0
m
i
n
b
y
s
t
e
p
s
o
f
1
m
i
n
m
a
x
.
n
u
m
b
e
r
o
f
p
a
r
a
l
l
e
l
a
t
t
e
m
p
t
s
N
s
:
1
÷
1
0
b
y
s
t
e
p
s
o
f
1
c
l
o
s
i
n
g
c
o
m
m
a
n
d
p
u
l
s
e
t
i
m
e
t
c
:
0
.
1
0
÷
9
.
9
9
s
c
l
o
s
i
n
g
d
e
l
a
y
t
r
:
0
.
0
2
÷
0
.
9
9
s
o
c
c
u
r
r
e
d
-
c
l
o
s
i
n
g
w
a
i
t
t
i
m
e
t
w
c
:
0
.
1
0
÷
9
.
9
9
s
b
y
s
t
e
p
s
o
f
0
.
0
1
s
f
b
/
f
n
m
a
x
.
d
e
v
i
a
t
i
o
n
D
f
b
:
(
±
)
1
÷
5
%
f
g
/
f
n
m
a
x
.
d
e
v
i
a
t
i
o
n
D
f
g
:
(
±
)
1
÷
2
0
%
U
b
/
U
b
n
m
a
x
.
d
e
v
i
a
t
i
o
n
D
U
b
:
(
±
)
1
÷
5
%
U
g
/
U
g
n
m
i
n
.
g
e
n
e
r
a
t
o
r
v
o
l
t
a
g
e
D
U
g
:
7
0
÷
8
5
%
b
y
s
t
e
p
s
o
f
1
%
s
t
a
b
i
l
i
t
y
t
i
m
e
t
d
:
0
.
1
÷
1
0
.
0
s
b
y
s
t
e
p
s
o
f
0
.
1
s
m
a
x
.
f
r
e
q
u
e
n
c
y
d
i
f
f
e
r
e
n
c
e
D
f
:
(
±
)
0
.
0
2
÷
0
.
5
0
H
z
b
y
s
t
e
p
s
o
f
0
.
0
1
H
z
m
a
x
.
v
o
l
t
a
g
e
d
i
f
f
e
r
e
n
c
e
D
U
:
(
±
)
1
÷
3
0
%
b
y
s
t
e
p
s
o
f
1
%
m
a
x
.
p
h
a
s
e
d
i
f
f
e
r
e
n
c
e
D
p
:
(
±
)
1
÷
3
0
º
b
y
s
t
e
p
s
o
f
1
º
l
i
v
e
b
a
r
,
p
a
r
a
l
l
e
l
m
o
d
e
L
B
:
N
O
R
M
SUBSYNC
SUPERSYNC
d
e
a
d
b
a
r
D
B
:
O
F
F
ON
ON CHECK
d
e
a
d
b
a
r
l
e
v
e
l
U
d
:
0
.
1
0
÷
0
.
3
0
U
b
n
b
y
s
t
e
p
s
o
f
0
.
0
1
U
b
n
Frequency regulator parameters
f
r
e
q
u
e
n
c
y
r
e
g
u
l
a
t
i
n
g
m
o
d
e
C
P
f
:
C
O
N
T
-
P
U
L
S
E
f
r
e
q
u
e
n
c
y
r
e
g
u
l
a
t
i
o
n
p
u
l
s
e
t
i
m
e
t
f
p
u
:
0
.
1
0
÷
9
.
9
9
s
f
r
e
q
u
e
n
c
y
r
e
g
u
l
a
t
i
o
n
m
i
n
.
p
a
u
s
e
t
i
m
e
t
f
p
a
:
1
.
0
0 ÷
9
.
9
9
s
f
re
q
ue
n
c
y
r
eg
u
l
a
ti
on
m
a
x
.
pa
u
s
e
t
i
m
e
t
f
p
m
:
1
0
.0
0
÷
9
9
.
99
s
b
y
s
t
e
p
s
o
f
0
.
0
1
s
l
o
a
d
p
u
l
s
e
L
P
:
O
N
-
O
F
F
l
o
a
d
p
u
l
s
e
t
i
m
e
t
l
p
:
0
.
1
0
÷
9
.
9
9
s
b
y
s
t
e
p
s
o
f
0
.
0
1
s

pag. 6
MDE/A133 2295 001
MX3EG1A
Voltage regulator parameters
v
o
l
t
a
g
e
r
e
g
u
l
a
t
i
o
n
m
o
d
e
C
P
U
:
C
O
N
T
-
P
U
L
S
E
v
o
l
t
a
g
e
r
e
g
u
l
a
t
i
o
n
p
u
l
s
e
t
i
m
e
t
u
p
u
:
0
.
1
0
÷
9
.
9
9
s
v
o
l
t
a
g
e
r
e
g
u
l
a
t
i
o
n
p
a
u
s
e
t
i
m
e
t
u
p
a
:
0
.
1
0
÷
9
.
9
9
s
b
y
s
t
e
p
s
o
f
0
.
0
1
s
ADDITIONAL SETTINGS
b
a
r
T
V
p
r
i
m
a
r
y
r
a
t
e
d
v
o
l
t
a
g
e
:
1
0
0
÷
1
0
0
0
0
0
0
V
g
e
n
e
r
a
t
o
r
T
V
p
r
i
m
a
r
y
r
a
t
e
d
v
o
l
t
a
g
e
:
1
0
0
÷
1
0
0
0
0
0
0
V
b
y
s
t
e
p
s
o
f
:
1
V
r
a
t
e
d
f
r
e
q
u
e
n
c
y
f
n
:
5
0
o
6
0
H
z
Auxiliary power supply
versions MX3EG1A.11, .61 and .71
U
a
u
x
:
1
9
÷
1
0
0
V
c
c
U
a
u
x
:
1
9
÷
7
2
V
c
a
versions MX3EG1A.12, .62 and .72
U
a
u
x
:
6
4
÷
3
0
0
V
c
c
U
a
u
x
:
6
4
÷
2
7
5
V
c
a
a
.
c
.
f
r
e
q
u
e
n
c
y
f
o
r
U
a
u
x
:
4
7
÷
6
3
H
z
d
.
c
.
b
u
r
d
e
n
(
m
i
n
/
m
a
x
)
:
5
W
/
1
0
W
a
.
c
.
b
u
r
d
e
n
(
m
i
n
/
m
a
x
)
:
1
0
V
A
/
2
0
V
A
Contacts features
r
a
t
e
d
c
u
r
r
e
n
t
:
5
A
breaking power (110 Vcc; L/R= 40 ms; 10
5
o
p
e
r
a
t
i
o
n
s
)
:
0
.
3
A
c
l
o
s
i
n
g
a
n
d
c
a
p
a
c
i
t
y
f
o
r
0
.
5
s
:
3
0
A
m
e
c
h
a
n
i
c
a
l
l
i
f
e
:
1
0
6
operations
Digital inputs
versions MX3EG1A.11, .61 and .71
U
a
u
x
I
N
D
I
G
:
1
9
÷
1
0
0
V
c
c
i
n
p
u
t
r
e
s
i
s
t
a
n
c
e
:
9
k
o
h
m
versions MX3EG1A.12, .62 and .72
U
a
u
x
I
N
D
I
G
:
6
4
÷
2
6
4
V
c
c
i
n
p
u
t
r
e
s
i
s
t
a
n
c
e
:
4
8
k
o
h
m
Errors of measuring equipment

Voltage thresholds
relative error:
≤
2.5% on point
+
0.02 V
fidelity error:
≤
0.02 V

Frequency thresholds
relative error:
≤
0.01 Hz
fidelity error:
≤
0.01 Hz

Phase thresholds
relative error:
≤
1°
fidelity error:
≤
1°
Error variations
as frequency
varies within
± 5%
fn (for
voltage values)
± 10Hz
(for
frequency values) and with distorsion factor
≤
5%

Voltage threshold
relative error:
≤
0.5% on point
+
0.02 V
as temperature and Uaux vary within the operation field

Voltage threshold
relative error:
≤
0.25% on point
+
0.01 V
for asymmetric quantities
relative error in the presence of unidirectional:
≤
5%
Timing errors
relative error on independent times:
≤
3% o 20 ms
fidelity error on independent times:
≤
1% o 20 ms
Timing error variation
as frequency
varies within
± 5%
fn (for
voltage values)
± 10Hz
(for
frequency values) and with distortion factor
≤
5%
relative error on independent times:
≤
1% or 10 ms
as temperature and Uaux vary within the operation field
relative error on independent times:
≤
0.5% or 10 ms
Further characteristics
Max.threshold drop-out ratio:
>
0.95
M
i
n
.
t
h
r
e
s
h
o
l
d
d
r
o
p
-
o
u
t
r
a
t
i
o
:
<
1
.
0
3
M
a
x
.
f
r
e
q
u
e
n
c
y
d
r
o
p
-
o
u
t
t
h
r
e
s
h
o
l
d
s
:
(
t
h
r
e
s
h
o
l
d - 0
.
0
1
) H
z
M
i
n
.
f
r
e
q
u
e
n
c
y
d
r
o
p
-
o
u
t
t
h
r
e
s
h
o
l
d
s
:
(
t
h
r
e
s
h
o
l
d + 0
.
0
1
) H
z
drop-out time:
≤
50 ms
idle time (overshoot):
≤
30 ms
Operating ranges
O
p
e
r
a
t
i
n
g
t
e
m
p
e
r
a
t
u
r
e
:
-
1
0
°
C
÷
+
6
0
°
C
s
t
o
r
a
g
e
a
n
d
t
r
a
n
s
p
o
r
t
t
e
m
p
e
r
a
t
u
r
e
:
-
2
5
°
C
÷
+
8
0
°
C
r
e
l
a
t
i
v
e
h
u
m
i
d
i
t
y
:
< 9
5
% w
i
t
h
o
u
t f
o
r
m
a
t
i
o
n o
f c
o
n
d
e
n
s
a
t
e
vi
bra
ti
on
s:
IEC
255-
21-1
;
cla
ss
2;
0.07
5mm
10-6
0Hz;
1g
60-5
00H
z
Weight
T
o
t
a
l
:
2
.
5
K
g
Protection class
d
e
v
i
c
e
:
I
P
5
2
o
n
r
e
q
u
e
s
t
,
f
r
o
n
t
p
a
n
e
l
:
I
P
6
6
t
e
r
m
i
n
a
l
b
o
a
r
d
w
i
t
h
m
o
u
n
t
e
d
c
o
v
e
r
i
n
g
:
I
P
2
0
Insulation
To ground and between two independent circuits:
2 kV, 50 Hz per minute
P
u
l
s
e
h
o
l
d
i
n
g
:
5
k
V
1
.
2
/
5
0
µ
s
Electromagnetic compatibility
89/336/ECC
directive
: EN50081-2
EN50082-2
For industrial environments
UNIPEDE NORM(SPEC)13 "Automation and control apparatus for
generating station and substation"
ENEL R_EMC_02 "Apparati di automazione e controllo per centrali e
stazioni elettriche".
Electromagnetic compatibility conditions:
I
E
C
1
0
0
0
-
4
-
8 E
N
6
1
0
0
0
-
4
-
8
l
e
v
.
5
;
1
0
0
0
A
/
m
I
E
C
1
0
0
0
-
4
-
1
0
E
N
6
1
0
0
0
-
4
-
1
0
l
e
v
.
5
;
1
0
0
A
/
m
I
E
C
1
0
0
0
-
4
-
3
E
N
V
5
0
1
4
0
l
e
v
.
3
;
1
0
V
/
m
7
7
B
(
S
e
c
)
1
E
N
V
5
0
2
0
4
l
e
v
.
3
;
1
0
V
/
m
IEC
1000-4-2
EN
61000-4-2
lev.4;
8kV
contact;15kV
in
air
77A/1
20/CD
lev.4
/
3;
300V
/
10-1-1-10
V
I
E
C
1
0
0
0
-
4
-
5
E
N
6
1
0
0
0
-
4
-
5
l
e
v
.
4
;
4
k
V
1
.
2
/
5
0
µ
s
I
E
C
1
0
0
0
-
4
-
1
2
E
N
6
1
0
0
0
-
4
-
1
2
l
e
v
.
3
;
2
.
5
k
V
I
E
C
1
0
0
0
-
4
-
4
E
N
6
1
0
0
0
-
4
-
4
l
e
v
.
4
;
4
k
V
7
7
B
/
1
4
4
/
D
I
S E
N
V
5
0
1
4
1
l
e
v
.
3
;
1
0
V
7
7
A
(
S
e
c
)
9
9
l
e
v
.
2
;
1
0
%
I
E
C
1
0
0
0
-
4
-
1
1
E
N
6
1
0
0
0
-
4
-
1
1
>
2
0
m
s
I
E
C
/
C
I
S
P
R
1
1
E
N
5
5
0
1
1
g
r
o
u
p
1
c
l
a
s
s
A
Reference standards
CEI
95-1
EN
60255-6
IEC
255
Low voltage directive 73/23/ECC

pag. 7
MDE/A133 2295 001
MX3EG1A
2. GENERAL
CHARACTERISTI
CS
The device features a mechanical casing that is 4
U in height and
as wide as to allow up
to 4 pieces to be accommodated in a 19"
rack in addition
to normal flush-mounting.
The casing is
made of hot-galvanized PVC-coated plate frame
inside which the movable part that carries all the electronic
circuits and the local interface slides on guides. The pull-out
action is facilitated by speci
al
'handles', which, when the dev
ice
is "plugged in", are also used to
lock the two parts. The aluminium
frame of the moving part renders the latter excellentl
y rigid.
The device/system interface terminal blocks are located
on the
rear side of the casing
and, for each electr
ical connection, a
screw clamp is available to receive up to 2 cable terminals, 4mm
2
i
in size; using a
special accessory that is included in the supply,
the connection can also be made by means of
Faston units.
Special error
-sensing codes avoi
d inserting relays oth
er
than
those compatible with the housing.
A
cover lid classes the terminal block withi
n the IP20 protection.
When the movable part is pulled out,
the voltage and auxiliary
circuits are
disconnected
.
The device front bears two labels:
one plate listing the factory settings of the device, namely auxiliary
voltage and frequency;
the other plate, always in accordance with the factory settings,
provides a description of LED
signals.
Both these plates can be easily replaced with new ones, showing
all the information as required by the client.
As far as the
factory settings relevant to output relays, LEDs,
digital inputs and relative sett
ings are concerned, refer to tables
A, B and C.
3. OPERATION
3.1
Parallel
sequence start
Upon enabling the digita
l input associated with LB star
t
(with
enabling characteris
tic on front) th
e stability timer td is
started to
allow any external settings to be made;
when the td time is over,
the device begins the parallel sequence.
The sequence can be stopped by enabling the digital input
associated with
STOP, An EXT 1 or An EXT 2 (respective
ly, for
manual sequence interruption or
external failures).
In this case, the command relative to the synchronization
sequence interrupted by
STOP or
an external event EXT1
or
EXT2 as well as any signal correspond
ing to the event are sent;
the partial and total counter corresponding to the mentioned event
is incremented and the event logging is enabled.
Once the parallel has been performed, the sequen
ce is interrupted
when the signal of
"closed breaker" is received (enabling of the
digital input associated with CH52).
3.2 Voltage regulator
3.2.1 Max.
deviation
bar voltage/rated
voltage
The device works
by comparing the Ub bar
voltage with
the Ubn
bar rated voltage.
When the deviation betwe
en the voltages exceeds the
DUb set
value, the 'START request failed' command - due to Ub out-of-
tolerance condition - as well as
any signal corresponding to the
event are sent;
the partial and to
tal counter
relative to the e
vent
is incremented and the event logging is enabled.
3.2.2 Min. generator voltage
The device works by comparing the Ug generator voltage with the
Ugn generator rated voltage.
When the Ug
voltage falls below the DUg set value, the
'START
request failed' command - due to Ug out-of-tolerance conditio
n -
as well as any signal corresponding to the event are sent; the
partial and total counter relative to the mentioned event is
incremented and the event logging is enabled.
3.2.3 Max. voltage difference
The device works by comparing the Ub bar voltage with the Ug
generator voltage.
When the difference between the modules of the two voltages
modules expressed in Ubn and Ugn multiples, exceeds the DU
set value, the 'voltage increase'
(if Ug<Ub) or 'voltage decrease'
(if Ug>Ub) command is sent.
The voltage increase/decrease commands can be of
'continuous'
or 'pulse' type depending on the
regulation mode
that has been
set, that is CPU CONT or PULSE.
If the PULSE mode has been set, the pulse time is de
fined by the
tupu set parameter; the min. pulse interval is
given by the tupa set
parameter.
The device makes it possible
to obtain Ubn and Ugn values that
are different from each other. This allows the parallel to be
performed even
with one
TV
installed upstream and
the other
installed downstream a transformer with Yd group; this is made
by using, on one side, a phase-phase voltage and, on the other,
the
corresponding neutral-phase voltage without the application
of any TV
adapter.

pag. 8
MDE/A133 2295 001
MX3EG1A
3.4 Load pulse and parallel command
When none of the following thresholds: DUb, DUg, DU, Dfb, Dfg,
Df, Dp is
tripping, the protection sends a parallel command with
a pulse duration equal to tc; the command is sent with a n
advance time equal to tr (breaker trip time) compared to the
expected Dp=0 phase difference instant: this to
allow the breaker
to be closed just when the voltages are in phase with each other.
If after the twc time the breaker is not closed (corresponding
digital input enabling failed) and the parallel conditions are still
acceptable, a further closing comma
nd is sent; the max. number
of commands is defined by the set Ns.
If after the last attempt the breaker is not closed, the 'failed
synchronization sequen
ce' command - once the max. number of
attempts has been reached - as well as any signal corresponding
to the event will be sent; the partial and total counter relative to the
event is incremented and the event logging is enabl
ed.
In the same way,
if the sequence has not
been terminated after
the max. tim
e ts defined
for
the parallel
sequence,
the 'failed
synchronization sequence' command - following a timeout
condition - as well as any signal corresponding to the event will
be
sent; the partial and total counter relative to the mentioned event
is incremented and the event logging is enabled.
On receiving the
'breaker closed' signal, the 'correctly-performed
synchronizat
ion sequence' command is
sent, the event logging
is also enabled.
Together with the 'breaker closing' command, in the event of LP
load pulse in ON
mode, a frequency increase pulse is issued for
a
time duration equal to tlp. This frequency increase pulse and,
therefore, the system
speed are
aimed at
preventing
energy
returns from occurring.
3.5 Dead-bar mode
The device can even be used to feed an out-of-voltag
e bar (dead
bar):
the generator parameter can
be set before
the breaker
closing.
The sequence start occurs upon enabling the digital input
associated with a DB start (with enabling characteristic on
front).
The dead-bar level is defined by the Ud set value; below the said
value the bar is considered as not-fed.
3.5.1 DB
dead-bar mode
OFF
Any request of dead-bar synchronization is ignored.
3.5.2 DB
dead-bar mode
ON
The device checks
that the generator frequenc
y and voltage lie
within the limits defined by Dfg
and DUg, by controlling the parallel
breaker closing without carrying out any adjusting action.
3.3 Frequency regulator
3.3.1
Max. deviation ra
ted frequency/ bar
frequency
The device works by comparing the fb bar frequency with the fn
rated frequency.
When the deviation between the two frequencies exceeds theDfb
set value, the 'START reques
t failed' command - due to
fb out-
of-tolerance condition - as well as
any signal corresponding to the
event are sen
t;
the partial a
nd total coun
ter relative t
o the
mentioned event is incremented and the
event logging is enabled.
3.3.2
Max. deviation rate
d frequency/ generator frequency
The device works comparing the fg generator frequency with the
rated frequency.
When the deviation between the two frequencies exceeds the Dfg
set value, the 'START reques
t failed' command
- due to fg out-
of-tolerance condition - as well as
any signal corresponding to the
event, are sent; the partial and total counter relative to the event
is incremented and the event logging is enabled.
3.3.3 Max. frequency difference
The device works by comparing the fb bar frequency with the fg
generator frequency.
When the difference between the
two frequencies exceed the
Df
set value, the 'frequency increase' (if fg<fb) or 'frequency decrease'
(if fg>fb) command is sent.
The frequency increase/decrease commands can be of
'continuous' or 'pulse' type depending on the
regulation mode that
has been set, that is CPf CONT or PULSE.
If the PULSE
mode has been set, the pulse time is defined by the
tfpu set parameter; the min. pulse interval is given by the tfpa set
parameter.
If the phase difference between bar and generator constantly
lies
above the Dp set threshold,
after a time interval equal to tfpm has
expired
since the last frequency increase/d
ecrease command,
the following types of desynchronization commands will be sent:
'frequency increase' in the event of SUPERSYNC live
bar parallel
mode or 'frequency decrease' in the
event of SUBSYNClive bar
parallel mode; in case of NORM live bar parallel mode the
'increase' comman
d will be sent when the generator is in 'delay'
condition compared to the bar, whereas the 'decrease' command
will be sent when
the generator is in 'advance' condition.

pag. 9
MDE/A133 2295 001
MX3EG1A
3.5.3 DB dead-bar mode
ON-CHECK
The device checks that the generator
frequency and voltage lie
within the limits define
d by Dfb and DUb: if
these do not lie within
the mentioned limits, the device carries out all the adjusting
operations necessary to make them lie within the
range of values
defined. The 'parallel breaker closing' command will
be then sent.
3.6 Main and spare settings
The device can store two groups of settings, namely
'main' and
spare', which can be selected through keyboard, PC or
network.
The group of setting being used is shown on the display as
'SETTINGS I
N
USE'.
Independent
ly of the selection made
,
the device can be
'forced'
to use the SPARE settings. This 'forcing' can be carried out from
the network or by permanently enabling the digital input (IN
DIG 1)
configured t
o
such aim. This
condition is si
gnalled by the
characters <!> which appear near the group already selected;
when the input is disabled, the group of settings previously
selected is restored and the characters <!> disappear (see
paragraph 6.1.3).
4. ADDITIONAL FUNCTIONS
4.1 Diagnostics
Diagnostic activities are envisaged which are automatically carried
out upon powering on the device as well as from time to time
during the running, and which allow the following actions to be
performed:
-
signa
lling fa
ult or fail
ure cond
itio
ns. This sig
nal de-e
nerg
izes
the diagnostic relay
, turns off the green LED (running device)
and turns on the red LED ( faulty devi
ce);
-
locki
ng out the de
vice in th
e event of fa
ults th
at migh
t entai
l ill-
timed operation (VITAL FAULTS)
-
displ
aying t
he code r
efer
ring to t
he type o
f fault o
ccur
red.
The following faults are defined as NOT
VITAL FAULTS:
-
out
pu
t re
lay
(X
1 - X5
) fa
ult
y
-
com
mu
nic
ati
on
fau
lty
-
int
ern
al
clo
ck
fa
ult
y
The following faults are defined as VITAL FAULTS:
-
fe
ed
er
fa
ul
ty
-
EE
P
RO
M
fa
ul
ty
-
inte
rna
l o
r e
xter
anl
RAM
faul
ty
-
anal
og/d
igit
al
con
vert
er
faul
ty
In the event of
vital faults the device automatically displays the
code relative to the kind of fault occ
urred; if allowed by the device,
this condition can only be solved by enabling the 'settings change'
command.
In the event that, upon starting up the equipment, an EEPROM
failure makes it impossible to retrieve the information on the
selected dialogue language, the device will continue on
working
using Italian as default language.
The device includes the 'Watch Dog'.
The diagnostic activity is also aimed at signalling any condition of
'inhibited equipment': the relevant code is display
ed, the diagnostic
relay is de-energized and the red LED (faulty device) lights on.
This condition
can only be solve
d by enabling th
e
'settings
change' command.
The diagnostic menu also indicates the date when last
changes
were made to the
equipment.
4.2 Output circuits
The output circuits are composed of six relays: each of them is
provided with two contacts (see
block diagram).
The
X6 relay, nor
mally energize
d, is strictly ass
igned to the
diagnostic function.
Each remaining relay, if duly programmed from the keyboard, PC
or network, can be set
to carry out one or
more functions.
The operation of thes
e six relays is of monostable type:
that is,
it allows to immediate return to
the quiescent position when the
cause that operated it is
removed.
The output relays, except for the diagnostic relays, can all be
simultaneous
ly set
to 'normally energized' (NORMA
L.ON=ON)
or to 'normally de-energized' (NORMAL.ON=OFF): the selection
occurs bymeans of the S1 jumper which is
accessible when the
relay has been pulled out (see fig. 2a,
2b).

pag. 10
MDE/A133 2295 001
MX3EG1A
4.3 LED signalling circuits
The signalling circuits are made up of twelve LEDs (see fig. 3).
Four LEDs are strictly assigned to previously established signalling
functions:
-
green
LED
(Uaux)
ON in
the pr
esence
of powe
r sup
ply and
correct feeder output voltage values
-
green
LED (RU
N)
ON with
fixed l
ight in
normal
conditio
ns and
blinking light during setting change or test
operations
-
red
LED
(RUN)
ON
with
fixe
d
ligh
t
when
the
diag
nost
ics
detects a fault or the
device is inhibited.
-
gree
n LED (
Rx Tx)
ON wit
h fixe
d ligh
t when
the de
vice i
s
correctly connected to the network; ON with blinking
light when
the communicati
on board is not enabled
or configured
;
OFF
when the device is provided with
no communication board.
Each of the
eight remaining
LEDs, if duly
programmed from
the
keyboard, PC or network, can be:
-
assig
ned to
one or
more
contr
ol out
puts o
r, in t
he eve
nt of
failures or events,
-
pr
e
-s
et
f
o
r
:
- monostable operation; it immediately goes off when the
cause that made it go on is removed
- bistable operation (MEMOR): the LED remains on until a
reset signal is sent
from the front push-button, digital input or
serial connection. Any failure of auxiliary voltage entails the
momentary loss of the luminous signals, which are reset as
soon as the voltage is restored.
A pocket is provided close to the LEDs, where explanatory la
bels
can be placed.
4.4 Digital inputs
If duly programmed from the keyboard, PC or
network, each of
the five optoinsulated inputs can be assigned to
one or more of the
following function
s referring to the device.
-
S
t
a
r
t
L
B
-
S
t
a
r
t
D
B
-
Sy
nc
hr
on
is
m
St
op
-
Ch5
2 pa
ral
lel
bre
ake
r cl
osi
ng
-
EX
T1
, EX
T2 e
xte
rn
al f
ail
ur
e
The factory settings envisage that the
above mentioned functions
are assigned
according to the
block diagram (fig. 3).
The input voltage can differ from the auxiliary voltage of the
device.
The enabling of the digital inputs
can be programmed by normally
energizing or de-e
nergizing or on front or
level.
WARNING:
the digital inputs associated with the Start LB
and Start DB functions must be ON on front , whereas all the
other functions must
be ON
on level.
4.5 Counters
Each type of tripping is associated with a partial or total counter
(see paragraph 6.1.7).
The counters work within the 0-9999 range; if
9999 is exceeded,
the counter is automatically set to zero and the counting restarts
from zero.
All the partial counters can be set to zero from the keyboard, from
PC or network.
4.6 Event log
When an event occurs, the following information is stored in
circulating memory:
- day, month, year,
time, minute, second and thousandth of a
second concerning the tripping moment
- type of event
- bar frequency
- generator frequency
- bar voltage
- generator voltage
- phase difference
- total parallel time
- number of parallel attempts
All this information is called 'event'.
The circulating memory allows the last eight events to
be stored,
and when this number is excee
ded, a
new record replace
s the
older: the last event is sto
red as EVENT 1.
The stored events can be read from the front display unit or from
a PC serially connected to the
device.
Furthermore, the device can store
the last
32 changes of
state
(with relative date and time) and make them readable through PC
or network only.
4.7 Measurements
The device can display the
effective current values concerning
the bar voltage expressed in Ubn multiples, the generator voltage
expressed in
Ugn multiples,
the bar
and generator
frequency
expressed in Hz, and the
phase difference expressed in grades.
It also displays the effective current primary values relative to the
bar and generator voltage expres
sed in V.
4.8 Test
Besides the normal diagnostics already dealt with, the device
also offers, in the TEST mode, the possibility of testing the
leds,
the display and the output relays.
-
The L
ED te
st tu
rns o
n all
the
LEDs
from
L1 to
L8 an
d the
display unit (LCD) for two seconds.
Once the test is over, the LEDs that were supposed to be ON
before the test remain ON and the display unit goes back to the
previous information displayed; the test can be carried out
during any running condition, without affecting the operation in
progress.
-
The re
lay te
st allo
ws the o
utpu
t rela
ys fro
m X1 to X
5 to be
sequentially select
ed
and checked for correct oper
ation. IN
this way, any external signalling or control circuit can be
tested.
The tested relay remain
s energized for 150 and 200 ms.
If commands are already present, the
test cannot
be carried
out and a
message appears on the display unit.
The test on auxiliary relays does not affect counters, event
logs and LEDs.

pag. 11
MDE/A133 2295 001
MX3EG1A
4.13 Serial communication on LONWORKS
(TM)
bus
In the version including the bus board, the device
can communicate
with a central monitoring and control system at a speed of
1.2 5
Mbaud. The connection to the field bus is made through terminals:
43 and 45.
The communication board, which can even be added afterwards,
is enabled only
if the
special
jumper is provided in
S6, and
is
disabled when the mentioned jumper is placed vertically between
S5 and S6 (see fig.1).
The positioning of the jumper in S6 without the above mentioned
communicatio
n board, causes,
just as a faulty board, a failure
message to be displayed in the diagnostics function.
In the Appendix A all the data available for the
network are shown.
4.9 Alphanumeric code
The device can be identified in the
system by an alphanumeric
code, which can be set by the user directly on the equipment code
or from a PC.
With a network-linked device, the alphanumer
ic
code can only be modified by operating through the network.
4.10 Language
The device can display information in four
languages: Italian,
English, French and Spanish. The language can
be selected
through the keyboard.
4.11 LCD settings
The display can be set for fixed (OFF) or timed (ON) backlighting;
in the last case, the di
splay lights up for
300s any time a key is
pressed.
4.12 Inhibiting
operation-decon
figuration
from
network
Inhibiting the device is useful
in already operating systems, to
avoid troubles when a protection is to be
fed with voltage whose
settings are not known or meant to be changed
.
The inhibiting occurs by keeping the 'setting change' key pressed
for about 2s, and using
auxiliary voltage simultaneo
usly until the
following message is
displayed:
[
BLOC
]
[
]
When the said key is released, the condition of the inhibited
device is signalled with a
message in the P fault diagnostics.
The operation reset is only made possible by selecting the setting
change function, whi
ch is however enabled;
a momentary loss
of the auxiliary voltage does not change the
device inhibition state.
If the device is
equipped with a network board, from the BLOC
condition, by furtherly keeping the setting change
key pressed for
about 2s, the following message is
displayed:
[
NET
RESET
?
]
[_
NO
YES
_]
If confirmed, the device can even leave its network configuration.
The complete network de-configuration and inhibiting procedure
is necessary every time the device must be replace
d.
The reset of an inhibited and de-configured device entails the
displaying of K fault messages until a new setting of the device
itself has not been made.
The operation reset is only made possible by selecting the setting
change function, which is however enabled.
fig. 1
I
CAUTION
Hazardous voltages canremain in the unit even in the absence
of power supply
or after it has been
pulled out of its casing
(capacitor storage).
TOP
RELAY
FRONT
view A-A
view A-A
view A-A
BOARD
NOT
ENABLED
BOARD
ENABLED

pag. 12
MDE/A133 2295 001
MX3EG1A
4.14
RS485 serial communication on
MODBUS protocol
Devices with 2.00 and higher software versi
ons can feature three
different kinds of
communicatio
n:
-
no c
om
mu
ni
ca
ti
on b
oa
rd
(version MX3EG1A .11 and .12);
-
L
o
n
W
o
r
k
s
(TM)
communication board
(version
MX3EG1A
.61
and
.62);
-
Mod
bus
com
mu
nic
ati
on
boa
rd
(version MX3EG1A .71 and .72);
The type of communication board installed is automatically
recognized.
In the event of
device with LonWorks
(TM)
communication board it
is necessary to carry out
the connection as provided for and set
all the connected devices. This is automatically possible by
connecting a PC equip
ped with PCLTA10 or SLTA10 board to a
CORMOX2 programme.
In the event of
device with Modbus communication board, each
relay can be set
through the front interface
or
through the
IRMA2
programme installed on PC connected to the front
serial port. The
configuratio
n can be carried out even on
relays which are still
connected to one another and can be pre-set on files together
with other information.
The configuration of the Modbus communication board requires
the following parameters:
P
A
R
A
M
E
T
E
R
V
A
L
U
E
Speed
300 Baud
600 Baud
1200 Baud
2400 Baud
4800 Baud
9600 Baud
19200 Baud
38400 Baud
Parity
NONE
EVEN
ODD
Data bits
7
8
Stop bits
1
2
Address
1 - 255 (0
broadcast)
These parameters can be modified in loco or from the network.
To this
aim, the
following
extension
of the
'RELAY DATA'
has
been added :
[MX3EG1A ]
relay type
[Sw
Vers
2.00/01]
software version
ñ ò
[PLANT IDENTIFIER]
[GenPan ]
ð
plant identifier
ñ ò
[SPEED
38400
Bb
]
ð
speed setting
[PARITY
NONE
]
ð
parity setting
ñ ò
[DATA
BIT
8
]
ð
data bit setting
[STOP
BIT
1
]
ð
stop bit setting
ñ ò
[ADDRESS
111
]
ð
address setting
[
]
Upon request, the message describing documents referrin
g to the two
different versions, LonWorks
(TM)
and Modbus, can be supplied.
4.15 Oscilloperturbography
The device can record the course of the
two input voltages - Ub
and Ug - and the logic states of the: 8 LEDs, 5 auxiliary relays and
5 digital inputs. The total recording time equals 2.5s, and can be
divided into variable time before start-up and variable time
after
start-up. The oscillopertu
rbography function can be started for:
remote control
(from PC or
network) of Start LB
or Start DB,
remote
control of
Stop,
synchroniza
tion
sequence correctly
concluded, synchronization sequence failed, digital input enabli
ng.
The selection of the start parameters, the graphic display and the
oscilloperturbography functio
n reset can be made through PC or
network. The function reset can also be
enabled by interrupting
the auxiliary voltage for a short time.

pag. 13
MDE/A133 2295 001
MX3EG1A
5. LOCAL INTERFACE
K
e
y
I
t
a
l
l
o
w
s
t
h
e
m
e
n
u
t
o
b
e
s
c
r
o
l
l
e
d
t
o
t
h
e
left and the value to change to be
selected if the settings change function
is enabled. [
ï
]
K
e
y
I
t
a
l
l
o
w
s
t
h
e
s
t
o
r
e
d L
E
D
s
i
n
d
i
c
a
t
i
o
n
s
t
o
be reset if the cause has been removed
,
or the partial counters to
be reset if they
are
in the 'display
counters' men
u.
It sets the end relays to quiescent state
when they are set to bistable operation.
K
e
y
I
f
p
r
e
s
s
e
d
f
o
r
a
t
l
e
a
s
t
2
s
,
t
h
i
s
k
e
y
allows the settings to be changed; when
the settings change function is enabled,
the green LED (RUN) lights up blinking.
If pressed once again for at least 2sec.,
the system goes back to normal running
conditions and, provided that a
confirmation is given, the new settings
become the current ones (the key can
only be reached by removing the cover
lid). During the settings-change
operations the device continues
working with the old settings. If the
changes made are confirmed in the
presence of a fault, the changes are
not accepted until the event is over: the
interrupt state is signalled for 3sec by a
message on the display unit, after which
you are prompted to confirm the
changes made.
If pressed when feeding the device with
auxiliary voltage until a failure message
appears on the display, this key inhibits
the device from operating.
Keys
If
simultaneous
ly
pressed
for
at
least 2sec, these keys allow the
protection Test to be carried out. When
the testing activity is enabled, the
green
LED (RUN) lights up blinking.
If simultaneously
pressed for
2 sec.
during the TEST routing, these keys
enable you to leave the protection
testing mode.
The local interface is made up
of:
-
a LCD di
splay u
nit or
ganiz
ed on t
wo line
s of six
teen c
hara
cters
each.
Through a special
keyboard-con
trolled scanning, the display
unit enables the settings to be read and changed, the
measurements, the counters, the logged events and the
diagnostic information to be read.
-
A
keyb
oard
made
up o
f si
x ke
ys,
five
of w
hich
can
even
be
reached when the cover lid is
fitted through a special link.
In addition to the above-mentioned scanning, the keyboard is
also used to change the settings, carry out tests that
require
commands to be sent and stored indic
ations to be set to zero;
the keys that can be reached when the cover lid is fitted only
allow for read-out and reset
operations.
Key
It
allows
the
menu
to
be
scrolled
upwards or the value to be increased if
the settings change function is enabled.
[
ñ
]
Key
It
allows
the
menu
to
be
scrolled
downwards or the value to be
decreased if the settings change
function is enabled. [
ò
]
Key
It
allows
the
menu
to
be
scrolled
to
the
right or the value to change to be
selected if the settings change function
is enabled.[
ð
]

pag. 14
MDE/A133 2295 001
MX3EG1A
-
Twelv
e LEDs
, four
of whi
ch are
rigo
rous
ly ass
ocia
ted wi
th
general functions.
-
A fou
r-pi
n con
nect
or in
comp
lian
ce wit
h FCC
68.
By means of a
special optoelectri
cal adapter, an optical fibre
cable and RS232 optical convert
er, it allows the device to be
locally linked with a
personal computer.
By means of a
special interface programm
e, the PC
enables
the settings to be read and changed, the measurements, the
counters, the logged
events,
the diagnostic information and
the oscilloperturbog
raphy to be
read.
6. LCD MENU STRUCTURE
6.1 MAIN READING MENU
The device features a main menu that leads to several submenus
(tree-structure). All the displayed messages can be made
permanently.
[Ug Ugn]
Current value of generator voltage
[fg
Hz
]
Current value of generator frequency
ñ ò
[MENU:
ITALIAN
]
Dialogue language
[
]
ð
change dialogue language
ñ ò
[DATE ]
current date and time
[TIME ]
ð
change date and time
ñ ò
[SETTINGS IN USE ]
display settings in use
[ MAIN]
ñ ò
[SETTINGS READING]
ð
display main settings
[MAIN ]
ñ ò
[SETTINGS READING]
ð
display spare settings
[SPARE ]
ñ ò
[ MEASUREMENTS ]
ð
display/reset current and stored
[
]
values
ñ ò
[
COUNTERS
]
ð
display counters and reset
[P
=
RESETTABLE]
partial counters
ñ ò
[ EVENTS ]
ð
display stored events
[EVENT
1=LAST
]
ñ ò
[OUTPUT
RELAYS
]
ð
display output relay
[
]
configuration
ñ ò
[
DIGITAL
]
ð
display digital inputs
[
INPUTS
]
configuration
ñ ò
[
LED
]
ð
display LED
configuratio
n
[
]
ñ ò
[
RELAY
DATA
]
ð
display model-software version
[
]
and alphanumeric code
ñ ò
[
DIAGNOSTICS
]
ð
display failures
[
]
last change date
All the following examples take their start form the main menu
.
6.1.1
Changing dialo
gue language
The dialogue language is ITALIAN.
Here follows an example showing how
to change the dialogue
language. Suppose we wish to set ENGLISH as the desired
language.
a) Press the key
ò
or
ñ
until the following message appears on
the display:
[MENU:
ITALIAN
]
[
]
b) By pressing the key
ð
the dialogue language function is
enabled and the following message appears on
the display:
[MENU:
ITALIAN
]
[
]

pag. 15
MDE/A133 2295 001
MX3EG1A
c) By pressing the key
ò
or
ñ
the stored language menu is
scrolled. For the purpose of our example, we mus
t stop when the
following message appears:
[MENU:
ENGLISH
]
[
]
d) By pressing the key
ï
the selected dialogue language is
confirmed and you go back to the main menu. The following
message appears on the display:
[MENU:
ENGLISH
]
[
]
6.1.2 Changing date and time
Access to the 'change date/time' function is denied when
the
protection is network-connected. If the network
connection is
made after entering the change function, the local
changes are
not enabled.
Suppose we wish to change the
starting date 10/06/93 into 24/05/
95.
a) Press the key
ò
or
ñ
until the display shows the following
message:
[DATE 10/06/93]
[TIME 9:38:43]
b) By pressing the key
ð
the change function is enabled and
the
display shows as follows:
[DATE 10/06/93]
[TIME 9:38:43]
c) By pressing the key
ð
the value to be changed is selected.
Press the key
ð
six times
to select the last dig
it that makes up
the date, the display will show as
follows:
[DATE 10/06/93]
[TIME 9:38:43]
d) By pressing the key
ñ
the value of the selected number is
increased. Hold the key pressed until the display shows:
[DATE 10/06/95]
[TIME 9:38:43]
e) By pressing the key
ï
, the fourth digit that makes up the
date
is selected: the display will
show:
[DATE 10/06/95]
[TIME 9:38:43]
f) By pressing the key
ò
, the selected number is decreased until
the display shows:
[DATE 10/05/95]
[TIME 9:38:43]
g) By pressing the key
ï
twice further, the second digit of the date
is selected and the display will show:
[DATE 10/06/95]
[TIME 9:38:43]
h) By pressing the key
ñ
the selected number is changed (on
reaching the number 9, the tens will go up by one
unit) until the
display shows:
[DATE 24/05/95]
[TIME 9:38:43]
i) Press the key
ï
until you move
to the beginning of the line.
The
display will show:
[DATE 24/05/95]
[TIME 9:38:43]
j)
By
pressing the
key
ò
the date-change function is enabled and
the steps to be followed are the same as those described from
c)
to i).
The device does not accept time or date
settings that do not exist.
The time counting starts upon moving from the digits that make
up the date to the wording TIME at the beginning of the line.
k) By pressing the key
ï
the changes made are confirmed and
you go back to the main menu: the display will show:
[DATE 24/05/95]
[TIME 9:38:43]
6.1.3 Displaying
settings in
use
a) Press the key
ò
or
ñ
until the display shows:
[SETTINGS IN USE]
[ MAIN]
The second line will display the
group of settings the device is
using.
Any
<!> possibly displayed, notwith
standing the contents of the
second line, indicates the device is working with the SPARE
settings.
[SETTINGS IN USE]
[
<!>
MAIN]
The device will continue on working with
the SPARE settings as
long as the 'settings
-change' comma
nd sent by the
IN DIG1
digital input remains enabled. When
<!> characters disappear,
the device restarts working with
the group of
settings displayed.
6.1.4 Displaying main settings
a) Press the key
ò
or
ñ
until the display shows:
[SETTINGS READING]
[MAIN ]
b) Press the key
ð
to enter the 'main setting display' submenu
and the keys
ò
or
ñ
to scroll the submenu showing as
follows:
r
a
t
e
d
f
r
e
q
u
e
n
c
y
f
n
b
a
r
r
a
t
e
d
v
o
l
t
a
g
e
U
b
n
g
e
n
e
r
a
t
o
r
r
a
t
e
d
v
o
l
t
a
g
e
U
g
n
c
l
o
s
i
n
g
p
u
l
s
e
t
i
m
e
t
c
b
r
e
a
k
e
r
c
l
o
s
i
n
g
t
i
m
e
t
r
m
a
x
.
n
o
.
o
f
p
a
r
a
l
l
e
l
s
e
q
u
e
n
c
e
a
t
t
e
m
p
t
s
N
s
c
l
o
s
i
n
g
m
i
n
.
i
n
t
e
r
v
a
l
t
i
m
e
t
w
c
m
a
x
.
t
i
m
e
f
o
r
p
a
r
a
l
l
e
l
s
e
q
u
e
n
c
e
t
s
s
t
a
b
i
l
i
t
y
t
i
m
e
t
d
m
a
x
.
d
e
v
i
a
t
i
o
n
r
a
t
e
d
f
r
e
q
u
e
n
c
y
/
b
a
r
f
r
e
q
u
e
n
c
y
D
f
b
ma
x.
de
vi
at
io
n r
at
ed
fr
eq
ue
nc
y/
ge
ne
ra
to
r f
re
qu
en
cy
Df
g
m
a
x
.
d
e
v
i
a
t
i
o
n
b
a
r
v
o
l
t
a
g
e
/
r
a
t
e
d
v
o
l
t
a
g
e
D
U
b
m
i
n
.
v
o
l
t
a
g
e
g
e
n
e
r
a
t
o
r
v
o
l
t
a
g
e
/
r
a
t
e
d
v
o
l
t
a
g
e
D
U
g
l
i
v
e
b
a
r
m
o
d
e
L
B
m
a
x
.
f
r
e
q
u
e
n
c
y
d
i
f
f
e
r
e
n
c
e
D
f
m
a
x
.
v
o
l
t
a
g
e
d
i
f
f
e
r
e
n
c
e
D
U
m
a
x
.
p
h
a
s
e
d
i
f
f
e
r
e
n
c
e
D
p
d
e
a
d
-
b
a
r
m
o
d
e
D
B
d
e
a
d
-
b
a
r
l
e
v
e
l
U
d

pag. 16
MDE/A133 2295 001
MX3EG1A
f
r
e
q
u
e
n
c
y
r
e
g
u
l
a
t
i
o
n
m
o
d
e
C
P
f
f
r
e
q
u
e
n
c
y
r
e
g
u
l
a
t
i
o
n
p
u
l
s
e
t
i
m
e
t
f
p
u
f
r
e
q
u
e
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u
l
a
t
i
o
n
m
i
n
.
p
a
u
s
e
t
i
m
e
t
f
p
a
f
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e
q
u
e
n
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r
e
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u
l
a
t
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a
x
.
p
a
u
s
e
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i
m
e
t
f
p
m
l
o
a
d
p
u
l
s
e
m
o
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e
L
P
l
o
a
d
p
u
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s
e
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i
m
e
t
l
p
v
o
l
t
a
g
e
r
e
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u
l
a
t
i
o
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o
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C
P
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v
o
l
t
a
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r
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u
l
a
t
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n
p
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p
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p
a
u
s
e
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p
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r
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m
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b
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b
a
r
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t
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d
v
o
l
t
a
g
e
U
b
T
V
c) By pressing the key
ï
anywhere in the submenu, you go back
to the main reading menu:
[SETTINGS READING]
[MAIN ]
6.1.5 Displaying spare settings
a) Press the key
ò
or
ñ
until the display shows:
[SETTINGS READING]
[SPARE ]
b) By pressing the key
ð
you enter the spare setting display
submenu , and by
pressing the keys
ò
or
ñ
you scroll
the sub-
menus showing as follows:
b
a
r
r
a
t
e
d
v
o
l
t
a
g
e
U
b
n
g
e
n
e
r
a
t
o
r
r
a
t
e
d
v
o
l
t
a
g
e
U
g
n
c
l
o
s
i
n
g
p
u
l
s
e
t
i
m
e
t
c
b
r
e
a
k
e
r
c
l
o
s
i
n
g
t
i
m
e
t
r
m
a
x
.
n
o
.
o
f
p
a
r
a
l
l
e
l
s
e
q
u
e
n
c
e
a
t
t
e
m
p
t
s
N
s
c
l
o
s
i
n
g
m
i
n
.
i
n
t
e
r
v
a
l
t
i
m
e
t
w
c
m
a
x
.
t
i
m
e
f
o
r
p
a
r
a
l
l
e
l
s
e
q
u
e
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c
e
t
s
s
t
a
b
i
l
i
t
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t
i
m
e
t
d
m
a
x
.
d
e
v
i
a
t
i
o
n
r
a
t
e
d
f
r
e
q
u
e
n
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/
b
a
r
f
r
e
q
u
e
n
c
y
D
f
b
ma
x.
de
vi
at
io
n r
at
ed
fr
eq
ue
nc
y/
ge
ne
ra
to
r f
re
qu
en
cy
Df
g
m
a
x
.
d
e
v
i
a
t
i
o
n
r
a
t
e
d
v
o
l
t
a
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e
/
b
a
r
v
o
l
t
a
g
e
D
U
b
m
i
n
.
g
e
n
e
r
a
t
o
r
v
o
l
t
a
g
e
/
r
a
t
e
d
v
o
l
t
a
g
e
D
U
g
l
i
v
e
b
a
r
m
o
d
e
L
B
m
a
x
.
f
r
e
q
u
e
n
c
y
d
i
f
f
e
r
e
n
c
e
D
f
m
a
x
.
v
o
l
t
a
g
e
d
i
f
f
e
r
e
n
c
e
D
U
m
a
x
.
p
h
a
s
e
d
i
f
f
e
r
e
n
c
e
D
p
d
e
a
d
-
b
a
r
m
o
d
e
D
B
d
e
a
d
-
b
a
r
l
e
v
e
l
U
d
f
r
e
q
u
e
n
c
y
r
e
g
u
l
a
t
i
o
n
m
o
d
e
C
P
f
f
r
e
q
u
e
n
c
y
r
e
g
u
l
a
t
i
o
n
p
u
l
s
e
t
i
m
e
t
f
p
u
f
r
e
q
u
e
n
c
y
r
e
g
u
l
a
t
i
o
n
m
i
n
.
p
u
l
s
e
t
i
m
e
t
f
p
a
f
r
e
q
u
e
n
c
y
r
e
g
u
l
a
t
i
o
n
m
a
x
.
p
u
l
s
e
t
i
m
e
t
f
p
m
l
o
a
d
p
u
l
s
e
m
o
d
e
L
P
l
o
a
d
p
u
l
s
e
t
i
m
e
t
l
p
v
o
l
t
a
g
e
r
e
g
u
l
a
t
i
o
n
m
o
d
e
C
P
U
v
o
l
t
a
g
e
r
e
g
u
l
a
t
i
o
n
p
u
l
s
e
t
i
m
e
t
u
p
u
v
o
l
t
a
g
e
r
e
g
u
l
a
t
i
o
n
m
i
n
.
p
a
u
s
e
t
i
m
e
t
u
p
a
b
a
r
p
r
i
m
a
r
y
r
a
t
e
d
v
o
l
t
a
g
e
U
b
T
V
b
a
r
p
r
i
m
a
r
y
r
a
t
e
d
v
o
l
t
a
g
e
U
b
T
V
Those parameters that are not listed in the SPARE menu take the
same value as those listed in the MAIN settings menu.
c) By pressing the
ï
anywhere in the submenu, you go back to
the main reading menu:
[SETTINGS READING]
[SPARE ]
6.1.6 Displaying
current
measurements
a) Press the key
ò
or
ñ
until the display shows:
[
M
E
A
S
U
R
E
M
E
N
T
S
]
[
]
b) By pressing the key
ð
you enter the
measuremen
ts display
submenu and by pressing the keys
ò
or
ñ
the following submenu
is scrolled:
effective current value of
bar voltage in multiples of
Ubn
Ub
effective current value of gene
rator voltage in multiples of Ugn
Ug
c
u
r
r
e
n
t
v
a
l
u
e
o
f
b
a
r
f
r
e
q
u
e
n
c
y
i
n
H
z
f
b
c
u
r
r
e
n
t
v
a
l
u
e
o
f
g
e
n
e
r
a
t
o
r
f
r
e
q
u
e
n
c
y
i
n
H
z
f
g
cu
rr
en
t v
al
ue
of
ph
as
e d
if
fe
re
nc
e e
xp
re
ss
ed
in
gr
ad
es
Dp
effective current value of bar primary voltage in Volt
Ub
'
effective current value of generator primary voltage in Volt
Ug'
c) By pressing the
ï
anywhere in the submenu, you go back to
the main reading menu:
[
M
E
A
S
U
R
E
M
E
N
T
S
]
[
]
6.1.7 Displaying counters
a) Press the key
ò
or
ñ
until the display shows:
[ COUNTERS ]
[P
=
RESETTABLE]
b) By pressing the key
ð
you enter the counter display submenu
and by pressing the keys
ò
or
ñ
the following submenu is
scrolled:
total trips caused by
START
request on LB
failed due to
fb or
fg
or Ub or
Ug out-of-rated tolerance
LB fU Fail T
partial trips caused by
START request on LB failed due to
fb or
fg or Ub or Ug out-of-rated tolerance
LB fU Fail P
total trips caus
ed by START request on DB failed due to fg or Ug
out-of-rated toleranc
e or
present Ub (not-dead bar)
DB fU Fail T
partial trips cause
d by START request on DB failed due to fg or
Ug out-of-rated tolerance or present Ub(not-dead bar)
DB fU Fail P
total trips caused
by LB synchronization sequence failed due to
timeout
or on reaching the max. no. of parallel sequence attempts
LB Timeout T
partial trips caused by LB synchronization sequence failed due to
timeout or on reaching the max.no. of
parallel attempts
LB Timeout P
total trips caused by
DB synchronization sequence (ON-CHECK
)
failed due to timeout or on reaching the max. no. of parallel
attempts
DB Timeout T
partial trips caused by DB synchronization sequence (ON-
CHECK) failed due to timeout or upon reaching the max. no. of
parallel attempts
DB Timeout P
total trips caused by LB or DB synchroniza
tion sequence
(ON-
CHECK) interrupted by STOP command
STOP T
partial trips caused by LB or
DB synchronization sequence (ON-
CHECK) interrupted by STOP command
STOP P

pag. 17
MDE/A133 2295 001
MX3EG1A
total trips caused by LB
or DB synchronization sequence (ON-
CHECK) interrupted by external event
EXT1
EXT1 T
partial
trips caused by LB
or DB synchronization sequence (ON-
CHECK) interrupted by external event
EXT1
EXT1 P
total trips caused by LB
or DB synchronization sequence (ON-
CHECK) interrupted by external event
EXT2
EXT2 T
partial trips caused by LB or
DB synchronization sequence (ON-
CHECK) interrupted by external event EXT2
EXT2 P
total trips caused by LB synchronization sequence correctly
carried out
SYNC LB OK T
partial trips caused by
LB synchronization sequence correctly
carried out
SYNC LB OK P
total trips caused by DB synchronization sequence correctly
carried out
SYNC DB OK T
partial trips caused by
DB synchronization sequence correctly
carried out
SYNC DB OK P
c) By pressing RESET you can reset the partial counter displayed.
d) By pressing the key
ï
anywhere in the submenu, you go back
to the main reading menu:
[ COUNTERS ]
[P
=
RESETTABLE]
6.1.8 Displaying events
a) Press the key
ò
or
ñ
until the display shows:
[ EVENTS ]
[EVENT
1=LAST
]
b) By pressing the key
ð
you enter the submenu where the eight
events can be selected. The display will show:
[EVEN.1 GG/MM/AA ]
[ hh:mm:ss.xxx ]
The first line displays the event number, the
day, month and year,
whereas the second line lists the time,
minutes, seconds and
milliseconds concerning the event.
c) By pressing the key
ò
or
ñ
you select the event to be
displayed. Once the selection
has been completed, by
pressing
the key
ð
, you will enter the eve
nt display submenu; by pressing
the keys
ò
or
ñ
the following submenu is
scrolled:
event type or cause
(1)
bar
frequency value in Hz at
the time of
the event
fb_E
generator freque
ncy value in Hz
at the time of the
event
fg_E
bar voltage value in multiples of Ubn at
the time of the event
Ub_E
generator voltage value in multiples of Ugn at the time of the event
Ug_E
phase difference value in grades at the
time of the event
Dp_E
parallel sequence total time expressed in
minutes and seconds
a
t
t
h
e
t
i
m
e
o
f
t
h
e
e
v
e
n
t
t
s
_
E
no. of parallel attempts at the time of the even
t
Ns_E
(1)
The causes that lead to an event are those listed in the previous
paragraph on counters.
d) By pressing the key
ï
anywhere in the submenu, you go back
to the event reading submenu; follow the steps
described in c) to
display other events.
Press the key
ï
anywhere in the submenu
to go back to the
main reading menu:
[ EVENTS ]
[EVENT
1=LAST
]
6.1.9 Displaying output relays
a) Press the key
ò
or
ñ
until the display shows:
[OUTPUT
RELAY
]
[
]
b) By pressing the key
ð
,
you enter the s
ubmenu that disp
lays
the allocation of auxiliary output relays. The display will
show:
[f+ ]
[REL X1....]
The first line displays the function that is associated with the relay
or relays shown in the
second line.
Press the keys
ò
or
ñ
to scroll the submenu.
The functions the output relays are associated with are as
follows:
f
r
e
q
u
e
n
c
y
-
i
n
c
r
e
a
s
e
c
o
m
m
a
n
d
f
+
f
r
e
q
u
e
n
c
y
-
d
e
c
r
e
a
s
e
c
o
m
m
a
n
d
f
-
v
o
l
t
a
g
e
-
i
n
c
r
e
a
s
e
c
o
m
m
a
n
d
U
+
v
o
l
t
a
g
e
-
d
e
c
r
e
a
s
e
c
o
m
m
a
n
d
U
-
5
2
p
a
r
a
l
l
e
l
b
r
e
a
k
e
r
c
l
o
s
i
n
g
c
o
m
m
a
n
d
X
5
2
The variable NORMAL.ON. indicates whether all the
output relays
are pre-set to be normally energized or not.
c) Press the key
ï
anywhere in the submenu to go back to the
main reading menu:
[
OUTPUT
RELAY
]
[
]
6.1.10 Displaying digital inputs
a) Press the key
ò
or
ñ
until the display shows:
[
DIGITAL
]
[
INPUTS
]
b) By pressing the key
ð
you enter the submenu that displays the
allocation of the digital
inputs.
The first displaying refers to the digital inputs to be
enabled by
normal energizing (
↑
) or de-energizing (
↓
); the display unit will
show:
[IN
DIG
12345]
[ENABLED
↑↑↑↑↑
]
Press the keys
ò
or
ñ
to scroll the submenu.
The second displaying re
fers to the digital
inputs to be enabled
on front (F) or on level (L); the display unit will sh
ow:
[IN
DIG
12345]
[FR/LEV LLLFL]

pag. 18
MDE/A133 2295 001
MX3EG1A
By pressing the keys
ò
or
ñ
you can scroll the submenu until the
digital inputs are displayed which are
associated with the different
functions. The display unit will show:
[Start
LB
]
[IN
DIG
...4.]
The first line displays the function the digital inputs shown in the
second line are associated with.
The functions that can be associated with the inputs are:
L
B
s
y
n
c
h
r
o
n
i
z
a
t
i
o
n
s
e
q
u
e
n
c
e
s
t
a
r
t
S
t
a
r
t
L
B
D
B
s
y
n
c
h
r
o
n
i
z
a
t
i
o
n
s
e
q
u
e
n
c
e
s
t
a
r
t
S
t
a
r
t
D
B
s
y
n
c
h
r
o
n
i
z
a
t
i
o
n
s
e
q
u
e
n
c
e
s
t
o
p
S
T
O
P
5
2
p
a
r
a
l
l
e
l
b
r
e
a
k
e
r
c
l
o
s
e
d
C
H
5
2
e
x
t
e
r
n
a
l
f
a
i
l
u
r
e
1
A
n
E
X
T
1
e
x
t
e
r
n
a
l
f
a
i
l
u
r
e
2
A
n
E
X
T
2
switch to spare settings
SETTING SWITCH
L
E
D
r
e
s
e
t
R
E
S
E
T
L
E
D
c) By pressing the key
ï
anywhere in the submenu, you go back
to the main
reading menu:
[
DIGITAL
]
[
INPUTS
]
6.1.11
Displa
ying leds
a) Press the key
ò
or
ñ
until the display shows:
[
LED
]
[
]
b) By pressing the key
ð
you enter the submenu that displays the
allocation of the LEDs. The display will shows:
[f+ ]
[LED L1.......]
The first line displays the function the
LEDs shown in the
second
line are associated with.
Press the key
ò
or
ñ
to scroll the submenu.
The functions the LEDs can be associated with are
as follows:
f
r
e
q
u
e
n
c
y
-
i
n
c
r
e
a
s
e
c
o
m
m
a
n
d
f
+
f
r
e
q
u
e
n
c
y
-
d
e
c
r
e
a
s
e
c
o
m
m
a
n
d
f
-
v
o
l
t
a
g
e
-
i
n
c
r
e
a
s
e
c
o
m
m
a
n
d
U
+
v
o
l
t
a
g
e
-
d
e
c
r
e
a
s
e
c
o
m
m
a
n
d
U
-
5
2
p
a
r
a
l
l
e
l
b
r
e
a
k
e
r
c
l
o
s
i
n
g
c
o
m
m
a
n
d
X
5
2
b
a
r
f
r
e
q
u
e
n
c
y
o
u
t
o
f
t
o
l
e
r
a
n
c
e
>
f
b
<
g
e
n
e
r
a
t
o
r
f
r
e
q
u
e
n
c
y
o
u
t
o
f
t
o
l
e
r
a
n
c
e
>
f
g
<
b
a
r
v
o
l
t
a
g
e
o
u
t
o
f
t
o
l
e
r
a
n
c
e
>
U
b
<
g
e
n
e
r
a
t
o
r
v
o
l
t
a
g
e
o
u
t
o
f
t
o
l
e
r
a
n
c
e
>
U
g
<
LB
st
ar
t f
ai
le
d d
ue
to
in
co
rr
ec
t p
ar
am
et
er
s f /
U
LB
fU
Fa
il
DB
sta
rt
fa
ile
d d
ue
to
inc
or
rec
t p
ara
met
ers
f /
U
DB
fU
Fai
l
L
B
s
t
a
r
t
f
a
i
l
e
d
d
u
e
t
o
T
i
m
e
o
u
t
L
B
T
i
m
e
o
u
t
D
B
s
t
a
r
t
f
a
i
l
e
d
d
u
e
t
o
T
i
m
e
o
u
t
D
B
T
i
m
e
o
u
t
s
y
n
c
h
r
o
n
i
z
a
t
i
o
n
s
e
q
u
e
n
c
e
i
n
t
e
r
r
u
p
t
e
d
b
y S
t
o
p
S
t
o
p
s
y
n
c
h
r
o
n
i
z
a
t
i
o
n
s
e
q
u
e
n
c
e
i
n
t
e
r
r
u
p
t
e
d
b
y
E
x
t
1
E
x
t
1
s
y
n
c
h
r
o
n
i
z
a
t
i
o
n
s
e
q
u
e
n
c
e
i
n
t
e
r
r
u
p
t
e
d
b
y
E
x
t
2
E
x
t
2
LB synch
ron
iza
tio
n
seq
uen
ce corre
ctl
y
car
rie
d
out
Sync LB OK
DB
syn
chr
oni
zat
ion
seq
uen
ce
cor
rec
tly
car
rie
d o
ut
Sync
DB
OK
It is furthermore possible to
display the LEDs that
are associated
with the following setting:
b
i
s
t
a
b
l
e
o
p
e
r
a
t
i
o
n
M
E
M
O
R
c) By pressing the key
ï
anywhere in the submenu, you go back
to the main reading menu:
[
LED
]
[
]
6.1.12 Displaying relay data
a) Press the key
ò
or
ñ
until the display shows:
[
RELAY
DATA
]
[
]
b) By pressing the key
ð
you enter the submenu and the display
shows the device model and the software version:
[MX3EG1A ]
[Soft Vers 001.00]
c) By pressing the key
ò
once again, the second line
displays
the alphanumeric identifi
cation code the plant has given to
the
device. For instance:
[PLANT IDENTIFIER]
[CELL
NO.
17bis
]
d) By pressing the key
ï
anywhere in the submenu, you go back
to the main reading menu:
[
RELAY
DATA
]
[
]
6.1.13 Displaying diagnostics
1) Detecting faults
a) Press the key
ò
or
ñ
until the display shows:
[
DIAGNOSTICS
]
[
]
In the event of VITAL FAULTS the device automatically displays
the window without any need to enter the
diagnostics menu.
b) By pressing the key
ð
you enter the submenu that displays the
relay running state. The display will show:
[Last
mod.
Imp.]
[GG/MM/AA hh:mm]
The second line shows the day,
month, year, time relative to the
last parameter
modificatio
n.
c) By pressing the key
ò
once again, if the device has not
detected any failure, the display will show the following
message:
[
RUNNING
]
[
]
In the event of NOT VITAL FAULTS, the display will show:
[FAULT ]
[ABCDE.....KL ]
whereas in the event of VITAL FAULTS the characters <!> will be
displayed:
[FAULT <!>]
[.....FGHIJ... ]
The second line shows one or more fault detecti
ng codes.

pag. 19
MDE/A133 2295 001
MX3EG1A
The following table describes the
correspond
ence between the
fault code and the fault nature:
Co
d
e
t
y
p
e
o
f
f
a
u
l
t
A
co
il
r
e
la
y
X
1
in
te
r
ru
pt
ed
or
r
el
at
iv
e
dr
iv
er
B
co
il
r
e
la
y
X
2
in
te
r
ru
pt
ed
or
r
el
at
iv
e
dr
iv
er
C
co
il
r
e
la
y
X
3
in
te
r
ru
pt
ed
or
r
el
at
iv
e
dr
iv
er
D
co
il
r
e
la
y
X
4
in
te
r
ru
pt
ed
or
r
el
at
iv
e
dr
iv
er
E
co
il
r
e
la
y
X
5
in
te
r
ru
pt
ed
or
r
el
at
iv
e
dr
iv
er
F
i
n
t
e
r
n
a
l
f
e
e
d
e
r
f
a
u
l
t
y
G
E
E
P
R
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fa
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but not pre-set
L
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The placing of
the communication-boar
d enabling S6
jumper
(see fig.1)
without the said board, just as for any fault, causes the
K code to appear.
d) In the event of
NOT VITAL FAULTS, by pressing the key
ï
anywhere in the submenu, you go back to the main reading menu:
[
DIAGNOSTICS
]
[
]
whereas in the event of VITAL FAULTS you can only lea
ve the
diagnostics submenu - if allowed by the device -
by enabling the
change menu.
2)
Inhibited
device
If the device is
inhibited or not configured, the following window will
be displayed:
[FAULT <!>]
[.............P ]
You can only
leave this cond
ition by enablin
g the 'settings
change' function (it is however necessary to confirm SAVE
CHANGES even if no device
setting has been changed).
Caution:
the set parameters must be displayed in the cha
nge menu as the
device can only be
restarted by leaving this condition.
If, upon inhibiting the device, this is also not configured, the return
to the running condition will lead to the displaying of the K fault
messages until a new configuration is carried out (see paragraph
4.12).
6.2
MAIN SETTING
CHANGE MENU
By pressing the key
anywhere in the reading menu for
at least two seconds, you enter
the main change menu. Th
ence,
several submenus can be entered (tree-structure). When the
change function is enabled, the green LED (RUN) lights up and
blinks.
If the setting change function is already enabled in use through a
PC or the network, the local setting is inhibited and the following
message will be displayed:
[
SE
TT
I
NG C
HA
NG
E
]
[
NO
T A
VA
IL
A
BL
E ]
The access priority
for the
setting change function among PC,
network and keyboard is of time-dependent.
During the setting change operations the device continues on
working using the old settings.
All the displayed messages can be
made permanently.
[SETTINGS
IN
USE]
settings in use
[ MAIN]
ð
selection of current setting group
ñ ò
[SETTINGS CHANGE ]
ð
change main setting values
[MAIN ]
ñ ò
[SETTINGS CHANGE ]
ð
change spare setting values
[SPARE ]
ñ ò
[
OUTPUT
RELAY
]
ð
output relay configuration
[
]
ñ ò
[
DIGITAL
]
ð
digital inputs configuration
[
I
N
P
U
T
S
]
ñ ò
[
LED
]
ð
LED configuration
[
]
ñ ò
[
RELAY
DATA
]
ð
alphanumeric code setting
[
]
ñ ò
[
LCD
]
ð
permanent display back-lighting
[AUTOMATIC RETURN]
(LCD) enabled
By
pressing
the
key
for
at
least
two
seconds
anywhere
in the change menu, you go back to the
main reading menu but
you are first prompted to confirm the
changes made:
[
S
A
V
E
C
H
A
N
G
E
S
]
[<
NO
YES
>]
By pressing the key
ï
the changes made will
be discarded,
whereas by pressing the key
ð
they are confirmed.
The green LED ( RUN) stops blinking and becomes fixed.
If, on confirming the changes, any start or trip is occurring, the
settings are not accepted as long as
the event persists (fault or
enabling). This state is signalled for 3 sec. by the following
message:
[CHANGE SETTINGS ]
[DELAYED ]
You are then prompted to confirm the changes made again.
Note: the setting change function can even be enabled when the
device is 'forced
' to use
the SPARE se
ttings. In this case
, the
system only interrupts the selection of SETTINGS IN USE: MAIN
until the external forcing signal
disappears.