Multitek MULTIGEN M820-GM Series User manual
MULTIGEN
M820-GM*
&
M830-SM*
OPERATING MANUAL
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The MultiGen is designed to be user friendly and simple to
use. All operations are controlled by the two push buttons
& on the front of the M8**.
All necessary programming is also carried out via the front
two control buttons. The MultiGen units are fully
programmed by the factory and no further programming is
necessary. If required, the User can reprogram
parameters to individual requirements, such as the nominal
current and voltage inputs, relay output etc. These
programming operations are covered in this manual (see
section 4).
The MultiGen uses a high speed microprocessor and
analogue to digital conversion circuitry. Phase voltage and
current measurements are true RMS and the coolant and
oil pressure are measured directly from the engine sender.
Hours Run is measured from the frequency, and DC volts
measured directly from the battery.
1.1 General
The MultiGen M820-GM* series & M830-SM* series are
compact 96 x 96 mm Din case 3 phase generator
monitoring meters, The M820-GM* series measure Volts,
Amps, Frequency, Coolant Temperature, Pressure, Hours
Run, DC volts, and provide relay outputs for temperature
and pressure. The M830-SM series measure Volts Amps
and Frequency.
Power Systems :- Product code
1 Ph. M820-GM1 or M830-SM1
3 Ph. 3W unbalanced load M820-GM4 or M830-SM4
3 Ph. 4W unbalanced load M820-GM9 or M830-SM9
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1.2 Memory
Calibration and setup parameters including current and
voltage ratios, calibration constants, sender ranges etc. are
stored in a non volatile e2prom. In power down (power loss)
conditions all the information is retained. The e2prom
requires no battery or other circuitry to maintain the stored
data.
1.3 Relay Outputs
Two relays are provided as an option. One is a normally
open contact and is used to monitor the coolant
temperature. If the temperature rises above the preset point
the relay contact closes, and on the MultiGen display the
temperature icon flashes.
The second relay is provided to monitor the oil pressure
and this relay is normally closed. If the oil pressure goes
below the preset point the relay closes and the pressure icon
on the screen flashes.
1.4 Communications
The MultiGen has the option of providing RS485
communication.
The RS485 enables remote reading and programming of
the MultiGen via a host computer. The RS485 uses the
Modbus protocol allowing multi-drop with up to 32
MultiGens connected in parallel. The RS485 modbus
protocol allows the MultiGen to be used with PC, PLC,
RTU, Data loggers and scada programs.
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2. OPERATION
The MultiGen is designed to be user friendly and simple to
use.
There are only two control buttons on the front of the
instrument. All MultiGens are fully programmed by the
factory. The MultiGen is ready for use once it has been
installed (see section 5), connected to the system that's to be
measured (see section 6) and power applied. The
Right Hand button scrolls down through the Display
Screens and Left Hand button scrolls up through the
Display Screens. See section 3 for display screen options.
The two front control buttons are also used to program the
MultiGen (see section 4).
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3. DISPLAY SCREENS
3.1 The MultiGen can be programmed for either single
phase load, a 3 phase 3 wire unbalanced load or a 3 phase
4 wire unbalanced load.
The sequence of the parameters displayed is dependent on
the system that has been programmed into the MultiGen.
3.1.1 When the MultiGen is powered up the following
screens are shown if it has been programmed for 3 phase 4
wire unbalanced (M820-GM9) :-
V
276.9
277.0 V
V
480.0 V
479.9
480.1 V
VL1 L3
ACTION :
Press
ACTION :
Switch on power
COMMENTS :
The MultiGen is pro-
grammed to 3 phase 4 wire
unbalanced load. The first
screen shows 3 phase line to
neutralvoltage.
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L2 L1
L3 L2
L1 N
L2 N
L3 N
COMMENTS :
The second screen shows 3
phase line to line voltage
L1/L2, L2/L3, L3/L1. If the
button is pressed the
MultiGen goes back to the
previous screen.
277.O
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855.0 A
832.1
756.9 A
A
L1
L2
L3
ACTION :
Press
COMMENTS :
The third screen shows 3
phase current L1, L2, L3. If
the button is pressed the
MultiGen goes back to the
previous screen.
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3.78
60.02 Hz
h
ACTION :
Press
COMMENTS :
The fourth screen shows Hz
of the 3 phase system, and
Hours Run (Run Time)
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2.50 bar
12.00
92.o ° C
dc
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ACTION :
Press
COMMENTS :
The fifth screen shows oil
pressure, coolant
temperature and DC Volts
(batteryVolts).
Note the option bar or psi
and °C or °F is available
(see programming section
4.6)
V
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8
174 psi
9564
196 °F
h
255.0 V
60.03 Hz
L1N
ACTION :
Press
COMMENTS :
The sixth screen is the
custom screen. This allows
the user to define the 3
parametersto bedisplayed.
(See programming section
4.1.2)
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ACTION :
Press
COMMENTS :
The first screen in the single
phase set up, displays Volts,
Hz
3.1.2 3 phase 3 wire unbalanced load screen sequence
(M820-GM4).
For 3 phase 3 wire systems the screen sequence is identical
to the 3 phase 4 wire unbalanced load, as shown apart from
the first screen where the voltage shown is the line to line
voltage. The second screen is Amps (There is no line to
neutral voltage shown)
3.1.3 Single phase screen sequence (M820-GM1).
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9
174 psi
9564
196 °F
h
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ACTION :
Press
COMMENTS :
The 4th screen is the custom
screen. This allows the user
to define the 3 parameters to
be displayed. (See
programming section 4.1.2)
23.12
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ACTION :
Press
COMMENTS :
The 2nd screen shows
Amps, Hz & hour run.
ACTION :
Press
COMMENTS :
The 3rd screen shows oil
pressure, coolant
temperature and DC volts
(battery volts).
Note the option bar or psi
and °C or °F is available
(see programming section
4.6)
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250.5 A
50.2 Hz
h
2.50 bar
11.88
96.9 °C
dc
V
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3.1.3 Screen sequences for the M820-SM series (Note the
SM series only measures Volts Amps & Hz) are as
follows :-
For the M830-SM9 3 phase 4 wire unbalanced load the
sequence will be the same as detail 3.1.1 but without
Pressure, Temperature, Hours Run, DC Volts
measurements.
For the M830-SM4 3 phase 3 wire unbalanced load the
sequence will be the same as detail 3.1.2 but without
Pressure, Temperature, Hours Run, DC Volts
measurements.
For the M830-SM1 Single phase the sequence will be the
same as detail 3.1.3 but without Pressure, Temperature,
Hours Run, DC Volts measurements.
3.2 If the input measuring voltage and current signals are
lost but the auxiliary supply is still present the MultiGen
indicates this by displaying the following.
_ _ _ _ _
_ _ _ _ _
_ _ _ _ _
COMMENTS :
This indicates that measuring
signals are not present but
MultiGen is still functioning
correctly. Check input signal
condition and connections
etc.
.
.
.
L1
L2
L3
V
V
V
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4. PROGRAMMING
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NOTE
When in programming mode if the control buttons are not
used for more than 3 minutes the MultiGen returns to the
measuring mode and displays the first screen.
All units are fully programmed by the factory but there are
many features that can be programmed by the User to suit
individualapplications andneeds.
Programmed values and parameters are stored in non
volatile memory and are therefore retained in power down
situations.
4.1 To enter the programming mode the two front buttons
& have to be pressed simultaneously and held for 5
seconds. The MultiGen now enters the screen setup mode
and the display shows SCREEN. This mode allows the User
to customise the display to specific parameter requirements,
rather than use the standard parameters as shown in
section 3. (If you do not wish to alter Screen page (custom
screen) set up mode then Press again and the MultiGen
display moves to the next programming mode :- SUPPLY
set up).
Forexample
Standard page Line 1 = L1N Volts
Line 2 = L2N Volts
Line 3 = L3 N Volts
Custompage Line 1 = L1Amps
Line 2 = Deg C
Line 3 = Hours Run
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4.1.2 Customising display
ACTION :
Press & simultaneously,
and hold for 5 seconds
COMMENTS :
MultiGen is now in screen set
up mode.
screen
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ACTION :
Press
COMMENTS :
Screen is now in set up
mode for the 1st line.
sELECT v
v
v
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sELECT v
v
A
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ACTION :
Press
COMMENTS :
Pressing scrolls through
the different parameters
options available on line 1.
e.g. V, A, psi (or bar
depending which has been
programed see section 4.6.)
When required parameter is
displayedpress
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ACTION :
Press
COMMENTS :
Screen is now in set up
mode for the 2nd line.
v
v
A
sELECT
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v
A
sELECT °C
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ACTION :
Press
COMMENTS :
Pressing scrolls through
the different parameter
options available on line 2.
e.g. V, A, Hz, °C, (or °F
depending on what has been
program see section 4.6.)
When required parameter is
displayedpress
ACTION :
Press
COMMENTS :
Screen is now in set up
mode for 3rd line.
v
A
°C
sELECT
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ACTION :
Press
COMMENTS :
Pressing scrolls through
the different parameter
options available on line 3.
e.g. V, A, h, Vd.c. When
required parameter is
displayedpress
ACTION :
Press
COMMENTS :
This indicates programming
of customised screen is
complete.
A
°C
sELECT h
sCREEN
4.2 Programming of nominal voltage and current inputs
and ratios.
The SUPPLY programming mode allows the user to
program the nominal voltage and current inputs and ratios.
Please note the ratios can be changed as long as the
secondary (the input to the MultiGen) stays as shown on
the data label which is on the side of the product. For
example if the MultiGen had been set by the factory to have
a C.T. ratio 200/5A and the change required was for input
C.T. ratio to be 500/5A this can achieved by program
changes. But if the change required was for a C.T. ratio
500/1A then the unit would have to be returned to the
factory or distributor to have the internal C.T. changed
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from 5A to 1A. The same applies to the voltage if
theMultiGen input voltage is 230 volts L.N. then an
external voltage transformer ratio can be programmed as
long as the nominal input to the MultiGen remains at 230
Volts L.N.
4.2.1 Programming nominal voltage inputs.
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ACTION :
Press
COMMENTS :
MultitGen is now in supply
set up mode.
ACTION :
Press
COMMENTS :
Display shows nominal
voltageprogrammed bythe
factory. In this example 230
volts L.N. The cursor flashes
under the 1 st digit.
To change from 230 volts to for example 11kV :-
SUPPLY
230.000 VL1N
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ACTION :
Press
VL1N230.000 COMMENTS :
Pressing scrolls the digit
with the cursor flashing
below it from 0 to 9. When
the digit required is
displayed Press to store.
In this example 0 is required
so Press when zero is
displayed.
ACTION :
Press
COMMENTS :
Press and scroll until
2nd digit shows 1.
L1NV
010.000
ACTION :
Press
COMMENTS :
Cursor moves to the 2nd
digit.
V
030.000
L1N
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ACTION :
Press
COMMENTS :
Cursor moves to 3rd digit.
ACTION :
Press
COMMENTS :
Press and scroll until
3rd digit shows 1.
ACTION :
Press
COMMENTS :
Cursor moves to the 4th
digit. In this example the
4th, 5th and 6th digits
require 0 so if is pressed
3 times the cursor moves
along the 4th, 5th and 6th
digit without altering them.
V
010.000
V
011.000
V
011.000
L1N
L1N
L1N
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ACTION :
Press
V
011.000
SELECT
L1N
011.000
SELECT kVL1N
ACTION :
Press
COMMENTS :
Press if input required is
kV.
V
011.000
SELECT
L1N
ACTION :
Press
COMMENTS :
Press if input required is
V.
COMMENTS :
Display shows either V, kV,
MV, depending on which
was programmed by the
factory, and the message
SELECT. Pressing
scrolls through these 3
options V, kV, MV i.e.
SELECT the option.
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ACTION :
Press
COMMENTS :
Press if input required is
MV.
4.2.2 Programming current inputs. Once the voltage input
has been set and is pressed the screen goes to the
currrent setting.
ACTION :
Press
COMMENTS :
This shows the input set for
100 Amp input. The cursor
flashes under the 1st digit.
To change to 250 amp input :-
011.000
SELECT MV
L1100.000 A
L1N
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ACTION :
Press
COMMENTS :
Continue pressing until
the 2nd digit shows 5.
ACTION :
Press
COMMENTS :
The cursor moves to the 2nd
digit.
L1100.000 A
L1200.000 A
L1250.000 A
ACTION :
Press
COMMENTS :
Continue pressing until
the 1st digit shows 2.
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This manual suits for next models
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