Lumel N14 User manual

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NETWORK
PARAMETER
METER
N14 TYPE
USER’S MANUAL
Materm d.o.o.
tel: [phone]
[e-mail]
www.materm.si

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CONTENTS
1. APPLICATION..............................................................................5
2. METER SET .................................................................................5
3. BASIC REQUIREMENTS, OPERATIONAL SAFETY..................6
4. MOUNTING ..................................................................................6
5. METER DESCRIPTION................................................................7
6. N14 PROGRAMMING ................................................................12
7. RS-485 INTERFACE ..................................................................20
8. ERROR CODES .........................................................................26
9. TECHNICAL DATA.....................................................................26
10. ORDER CODES .........................................................................29
11. MAINTENANCE AND GUARANTEE.........................................30
Page

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1. APPLICATION
The N14 meter is a programmable digital panel instrument destined for
the measurement of 3-phase, 3 or 4-wire power network parameters, in
balanced or unbalanced systems with the simultaneous display of me-
asured quantities and digital transmission of their values.
This network parameter meter enables the control and optimization of
power electronic devices, systems and industrial installations.
The N14 meter ensures the measurement of: RMS voltage and current,
active, reactive and apparent power, active and reactive energy, power
factors, frequency, mean active power (e.g. 15-min mean power).
Voltages and currents are multiplied by given current and voltage ratios
of measuring transformers. Indications of power and energy take into
consideration programmed ratio values.
The value of each measured quantity can be transmitted to the master
system through the RS-485 interface.
The relay output signals the exceeding of the chosen quantity and the
impulse output can be used for the consumption control of the 3-phase
active energy. The meter has a detection and signaling of incorrect pha-
se sequence.
The meter is fixed to the panel by means of screw holders.
2. METER SET
The meter set includes:
- N14 meter 1 pc
- user’s manual 1 pc
- guarantee card 1 pc
- holder to fix the meter in a panel 2 pcs
When unpacking, please check the completeness of the set.

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3. BASIC REQUIREMENTS AND OPERATIONAL SAFETY
In the security scope, the meter meets the requirements of EN 61010-1
standard.
Remarks concerning the operator safety:
 All operations concerning the meter installation and connections
should be carried out by qualified skilled personnel and national
regulations for the prevention of accidents must be observed.
 Before connecting the meter to the power, one must check the
correctness of connections.
 Do not connect the meter to the network through an
autotransformer.
 Before the removal of the meter housing, one must disconnect its
supply and all measuring circuits.
 The housing removal from the meter during the guarantee contract
causes its cancellation.
 The meter fulfils requirements concerning the electromagnetic
compatibility in the industrial environment.
 In the building installation should be a switch or a circuit breaker,
situated near the meter, easy accessible for the operator and
suitably marked.
4. MOUNTING
The meter is adapted to be mounted in a panel by means of holders
acc. to fig.1.
The meter housing is made of a self-extinguishing plastics. Meter dimen-
sions: 96 96 70.5 mm. One must prepare a hole of 91+0.5 91+0.5
mm in the panel which the thickness should not exceed 6 mm.
The meter must be introduced from the panel front with disconnected
supply voltage. At the rear side of the meter there are terminal strips
which enable the connection of wires up to 2.5 mm2.
After the insertion into the hole, fix the meter by means of two holders.

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Fig. 1. Overall meter dimensions
5. METER DESCRIPTION
5.1. Current inputs
All current inputs are galvanically isolated (internal current transformers).
The meter is adapted to co-operate with external measuring current
transformers.
Displayed current values and derived quantities are automatically
re-counted by the quantity of the introduced external transformer ratio.
Current inputs are defined in the order as 1 A or 5 A.
5.2. Voltage inputs
Quantities on voltage inputs are automatically recounted by the quantitiy
of the introduced external voltage transformer ratio.
Voltage inputs are defined in the order as 3 x 57.7/100 V, 3 x 230/400 V
or 3 x 400/690 V.

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5.3. Connection diagrams
Direct measurement in a
3-wire network
Semi-indirect measure-
ment in a 3-wire network

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Fig. 2 Meter connection diagrams in a 3-wire network
Indirect measurement with the use of 2 current trans- formers and 2 or 3 voltage transformers in a 3-wire network.
Note: In an industrial environment with high electromagnetic noises it is
recommended to earth the terminal 11.

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Semi-indirect measure-
ment in a 4-wire network
Direct measurement in a
4-wire network

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Indirect measurement with the use of 3 current trans- formers and 2 or 3 voltage transformers in a 4-wire network.
Fig. 3 Meter connection diagrams in a 4-wire network

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Fig. 4 Frontal panel
Display field
Fields of
symbols and
units
Index of
alarm
switching on
Enter
acceptation
push
Value
increasing
push
Decimal point
change push
Erasing
push ESC
Index of
phase
quantities
Index of
3-phase
quantities:
mean,
minimal,
maximal
6.2. Messages after switching
the supply on
After switching the supply on, the
meter carries out the display test and
displays the name of the N14 meter
with the current program version and
rated values of voltages and cur-
rents.
Where: n.nn is the number of the current
program version or the number of a
custom-made version.
Caution! If at the moment of the start, the
message Err Cal lub Err EE appears, one
must contact an authorized service.
Caution! If at the moment of the start, the
message Err L3 L2 appears on the di-
splay, one must interchange connections
of the phase 2 with the phase 3.
Fig.5. Message after
the meter start
6. N14 PROGRAMMING
6.1. Frontal panel

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6.3. Working modes
Fig.6. Working modes of N14 meter

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6.4. Parametr preview
Quantities are displayed in the measurement mode acc. to the set-
tled tables. The pressure of the push (left) or push (top)
causes the transition between displayed quantities.
The preview of 3-phase values: mean, minimal and maximal is acces-
sible after pressing the acceptation (Enter) push. During the
preview of these values, the pressure of the (left) push cancels
minimal values, however the (top) push, maximal values.
Accessible measuring quantities
At capacitive load, during the display of reactive power, the index showing
the load character is highlighted. The exceeding of the upper indica-
tion range is signaled on the display by upper horizontal dashes, however
the lower range exceeding is signaled by lower horizontal dashes. The
mean active power 15-min PAu is displayed after a full interval of the 15-
min mean time. In case when the full interval of time is not expired, the
message Err is displayed.
The display of errors was described in the chapter 8.
The alarm relay switching on is signaled by the AL index backlighting.
Table 3
Table 2
Basic quantities:
Markers next to symbols
are backlighted
Values
displayed in:
row 1 U1 U12 I1 P1 Q1 S1 PF1 tg1
row 2 U2 U23 I2 P2 Q2 S2 PF2 tg2
row 3 U3 U31 I3 P3 Q3 S3 PF3 tg3
VLN VLL A W Var VA PF tg kWh* - kWh*
EnP
imported
EnP
exported
* - available from the program version 1.05.
Mean, minimal, maximal quantities
(indexes 3L, min, max are highlighted).
kVarh* kVarh* Hz W (15 min.)
EnQ
inductive
EnQ
capacitive
f1
min
max
6PAu
min
max
Values
displayed
in:
VLN VLL AWVarVA PF
Umean
phases
row 1
row 2
row 3
min
max
Umean between
phases
Imean
phase
6P3phase 6Q3phase 6S3phase PFmean
phase
min min min min min min
max max max max max max
tg*
tgmean
phase
min
max
Markers next
to symbols are
backlighted

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Displayed
information
Default
value
Range of
changes
Parameter
name
Access
code
Current
ratio
Voltage
ratio
Energy
erasing
Erasing of
15-minut
active power
Restoration of
manufacturer
values
SEC t_I t_U En0 PA0 dEF
01 1 nonono
0...999 1...10000 1...4000 YES/no YES/no YES/no
Fig. 7. Menu setup
6.5. Setting of parameters
The entry in the programming mode is carried out by pressing and hol-
ding during ca 3 sec. and pushes.
The entry in the programming
mode is protected by the access
code. In case when there is no
code, the program transits into
the programming option. The in-
scription SET (in the first column)
and symbols of respective levels
P, C, Aare displayed.
6.5.1. Setting of meter parameters
Select the mode Pin options (by or pushes) and confirm
the choice by the push.
Table 4

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Following values are set by means of and pushes: Posi-
tion of the decimal digit is selected by the push, the digit value
is increased by the push. The active position is signalled by the
cursor. The value is accepted by the push or abandoned by pres-
sing the push. During the acceptation, one can check if the value
is contained in the range.
In case of the value setting beyond the range, the meter remains in
the parameter edition mode, however the value is set on the maximal
value (if the value is too high) or on the minimal value (if the value is too
small).
Caution: to display and set 4 and 5-digit parameters (t_U, t_I) two lower
display rows are used.
6.5.2. Setting of communication parameters
In options, select the mode Cand confirm the choice by the
push.
Table 5
Displayed
information
Default
value
Range of
changes
Parameter
name
Meter
address
Interface
mode
Interface
rate
Restoration of
manufacturer
values
Adr trY bAU dEF
1 8n2 9.6 k no
1...247 8n2, 8e1,
8o1, 8n1
4.8, 9.6,
19.2, 38.4 k YES/no

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6.5.3. Setting of alarm parameters
In options, select the mode Aand confirm the choice by the
push.
Table 6
Displayed
information
Default
value
Range of
changes
Parameter
name
Monitored
quantity
Kind of
alarm
operation
Upper swit-
chhing value
(in %)
Time delay
of the reaction
(in sec.)
Restoration of
manufacturer
values
A_n A_t Aon Aof Adt dEF
oFF nor 101 99 0 no
see
table 7
nor, on, oFF,
hon, hoF 0...120 0...120 0...300 YES/no
Lower swit
ching value
(in %)
Table 7
Selection of monitored quantity:
Item
value in
register
4006
Displayed
parameter Kind of quanty
Value to calculate
alarm value percenta-
ges and outputs
00 offlack of quantity /alarm disabled/ none
01 U_1 voltage phase L1 Un[V]*
02 I_1 current in phase L1 In [A]*
03 P_1 acve power of phase L1 Un x In x cos(0o) [W]*
04 q_1 reacve power of phase L1 Un x In x sin(90o) [var]*
05 S_1 apparent power of phase L1 Un x In [VA]*
06 PF1 active power factor of phase L1 1
07 U_2 voltage - phase L2 Un [V]*
08 I_2 current in phase L2 In [A]*
09 P_2 acve power of phase L2 Un x In x cos(0o) [W]*
10 q_2 reacve power of phase L2 Un x In x sin(90o) [var]*

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Table 7 (continuation)
11 S_2 apparent power of phase L2 Un x In [VA]*
12 PF2 acve power factor of phase L2 1
13 U_3 voltage - phase L3 Un [V]*
14 I_3 current in phase L3 In [A]*
15 P_3 acve power of phase L3 Un x In x cos(0o) [W]*
16 q_3 reacve power of phase L3 Un x In x sin(90o) [var]*
17 S_3 apparent power of phase L3 Un x In [VA]*
18 PF3 acve power factor of
phase L3 1
19 U_A 3-phase mean voltage Un [V]*
20 I_A 3-phase mean current In [A]*
21 P 3-phase acve power
(P1+P2+P3) 3 x Un x In x cos(0o) [W]*
22 q 3-phase reacve power
(Q1+Q2+Q3) 3 x Un x In x sin(90o) [var]*
23 S 3-phase apparent power
(S1+S2+S3) 3 x Un x In [VA]*
24 PFA 3-phase acve power
factor 1
25 F frequency 100 [Hz]
26 U12 phase-to-phase voltage L1-L2 «3 Un [V]*
27 U23 phase-to-phase voltage L2-L3 «3 Un [V]*
28 U31 phase-to-phase voltage L3-L1 «3 Un [V]*
29 U4A phase-to-phase mean voltage «3 Un [V]*
30 PAu acve mean power 13x Un xIn xcos (0o) [W]*
31 tg1 tgMfactor of phase L1 1
32 tg2 tgMfactor of phase L2 1
33 tg3 tgMfactor of phase L3 1
34 tga 3-phase tgMfactor 1
* Un, In - rated values of voltages and currents

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Aon > Aof
a) nor
b) nor
c) On
d) OFF
Aon xAof
Fig. 8. Alarm types: a),b) normal c) disabled d) enabled.

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Remained types of alarms: hon – always enabled; hof – always disab-
led.
Example of alarm setting:
Set the alarm of nor for Aon > Aof, for the monitored 3-phase active
Power P
Version: 5 A; 3 x 230/400 V. Alarm enabled after exceeding 3800 W,
alarm disabled after decreasing 3100 W.
Calculation:
rated 3-phase active Power: P = 3 x 230 V x 5 A = 3450 W
3450 W – 100% 3450 W – 100%
3800 W – Aon% 3100 W – AoF%
Therefore: Aon = 110 % AoF = 90%
Set: Monitored quantity: P; Kind of alarm: nor, Aon 110, AoF 90.
7. INTERFACE RS-485
Set of the N14 meter serial link parameters:
identifier 0xAC
meter address 1...247
baud rate 4.8, 9.6, 19.2, 38.4 kbit/s,
working mode Modbus RTU,
information unit 8N2, 8E1, 8O1, 8N1,
maximal response time 1000 ms.
Implemented functions: 03, 16, 17
-03 - register readout,
-16 - register write,
-17 - device identification.
Manufacturer’s settings: address 1, baud rate 9600 bit/s, RTU 8N2
mode.
Register map of the N14 meter.
In the N14 meter, data are placed in 16 and 32-bit registers.
Process variables and meter parameters are placed in the address area
of registers in the way dependent on the variable value type.