Energy Management
Modular Universal Utility Meter and Power Analyzer
Type WM4-96
• Class 0.5 (current/voltage)
• Universal meter: energy, water and gas
• 32-bit µP-based multifunction power analyzer
• Back-lighted graph display (128x64 dots)
• Front size: 96x96 mm
Measurement of single phase and system instantaneous
•
variables: W, W
Hz, THD (for all measurements max and min values)
•
Measured energies: kWh and kvarh on 4 quadrants
• Graphic display of the load profile (daily, weekly,
monthly display)
• Current and voltage inputs with autoranging capability
• 4x4 dgt instantaneous variable read-out
• 4x9 dgt total energies read-out
• 4x6 dgt partial energies read-out
, var, var
dmd
, VA, VA
dmd
dmd
, PF, PF
avg
, V, AL,
An,
• Optional RS 422/485 serial output
• Optional RS232 + real time clock function and 2Mb
data logging of alarms, MIN/MAX events and up to 8
variables with programmable time interval.
• MODBUS RTU, JBUS protocol
ransmission and reception of SMS messages (vari-
•T
ables and alarm status)
•
Data transmission and reception by means of analogue modem
• Up to 4 optional pulse outputs
• Up to 4 optional alarm outputs
• Universal power supply
• Front degree protection: IP 65
: 18-60VAC/VDC, 90-260 VAC/VDC
Product Description
Universal utility meter and
power analyzer which can be
used in 3 different operating
modes:
- direct measurements for the
power quality analysis (LV or
MV/HV connection);
- indirect energy and power
measurements by means of
watt-hour meters (LV or
MV/HV connection);
direct measurements for the
instantaneous variables (LV
connection) and indirect
measurements for the energy variables (LV or MV/HV).
It’s possible to add the
management of gas and
water metering to all of
these working modes.
Automatic transmission of
SMS alarm messages.
Remote read-out from GSM
mobile phones of all the
instantaneous variables, the
last variables available in the
data logging and the energy
meters.
• 48 independent energy meters to be used as single,
dual, multi-time energy management
• Interface with watt-hour meters by means of digital
inputs (+kWh, +kvarh, -kWh, -kvarh)
• Interface with gas and water meters by means of digi-
tal inputs (one water meter, two gas meters to be used
as single or dual time management)
• Display refresh rate: 10 samples/s
•
Harmonic distortion analys (FFT) up to the 50th harmonic
with graphic and numeric indication (current and voltage)
• Harmonics source detection
How to order
Model
Range code
System
Power supply
Slot A
Slot B
Slot C
Slot D
Options
How to order
Wm4Soft Network: programm to download memory data
and to manage a modem. Wm4Soft Remote: programm to
set all the programming parameters.
WM4-96 A V53H XX XX XX XX X
Wm4Soft Network
Wm4Soft Remote
Type selection
Range code (on r
XXX: None
AV5:
240/415 VAC1/5 AAC
(max. 300 V (L-N)/
520 V (L-L) - 6 A)
AV7: 400/690VAC -
1/5 AAC
(max. 480V (L-N) /
830 V (L-L) / 6 A
Power supply
L:
18 to 60V
H:90 to 260VAC/VDC
equest)
AC/VDC
Slot A (interfacing)
XX:
None
3 universal digital inputs
D2:
+ excitation output
(16-24VDC)
(alarm or pulse)
Slot D
XX:
None
R2:Dual r
O2:Dual open collector
O4:
elay output,
(AC1-8AAC, 250V
(30V/100mADC)
output
Four open collector output (30V/100mADC)
AC)
Slot B (communication)
XX:
None
S1:Serial output,
RS485 multidr
bidirectional
Options
X:None
M:Serial port
RS232+RTC+ 2Mb or
Data memory to store
all events and contin-
ecor
uous r
variables
E1:WEB-server option
op,
d up to 8
Slot C (alarm or pulse)
XX:
None
R1:
Single relay output
(AC1-8AAC, 250VAC)
R2:Dual relay output,
(AC1-8AAC, 250VAC)
O1:
Single open collector
output (30V/100mADC)
O2:
Dual open collector out
(30V/100mADC)
put
D1:
3 digital inputs for volt-
ee contacts
age-fr
D2:
3 universal digital inputs
+ excitation output
(16-24VDC)
-
1
Page 2
M4-96
W
Input specifications
umber of analogue inputs
N
Current1 (1-phase; system code: 3)
Voltage1 (1-phase; system code: 3)
Digital inputs
AQ1038No. of inputs: 3 (voltage-free)
PurposeW
Contact measuring current
AQ1042
PurposeW
Excitation output16V<+Aux<24VDC Max 15mA
Contact measuring current
Common characteristics
Input frequencyMax 20 Hz, dutycycle 50%
Close contact resistance Max 1kΩ
Open contact resistanceMin 100kΩ
Insulation4000VRMS
from 1 to 255, key-pad selectable
ProtocolMODBUS RTU/JBUS
Data (bidirectional)
Dynamic (reading only)All display variables, see
lso the table, “List of the
a
onnected variables”.
tatic (writing only)All configuration parameters
S
c
energy reset, activation of
digital outputs.
Data format1 start bit, 8 data bit, no
parity/even parity/
odd parity, 1 stop bit
Baud rate1200, 2400, 4800 and 9600
bit/s selectable
InsulationBy means of optocouplers,
4000 V
output to
RMS
measuring inputs
4000 V
output to
RMS
power supply input
RS232
((oonn rreeqquueesstt)
)
Bidirectional (static and
dynamic variables)
Connections3 wires, max. distance15m
Data format1 start bit, 8 data bit,
no parity, 1 stop bit
Baud rate2400, 4800, 9600,
38400 bit/s
ProtocolMODBUS RTU (JBUS)
Other featuresAs per RS422/485
Communication by modem
Analogue modem For the remote communica-
tion of all the data measured
and managed by WM4.
External communication
Modem.
Recommended type: US
Robotics
GSM ModemFor the transmission of
SMS messages:
alarms, instantaneous
variables, last available
variables of data logging
and energy meters.
The alarms can also be
transmitted automatically,
while the variables can be
ecalled by means of special
r
SMS question codes
GSM kit type-tested for WM4Siemens kit (external)
model “TC35 TERMINAL”
included GSM module,
antenna and 230V power supply.
Digital outputs (on request)
To be used as alarms and/or
retransmission of the
energy, gas, water metering
and/or
outputs remotely
olled
contr
by the serial
communication port.
The outputs are completely
programmable independently of
the type of module being used.
Pulse outputs (on request)
Number of outputsUp t o 4
Type
From 1 to 1000 pulses
programmable for
k-M-G Wh, k-M-G varh,
open collector (NPN transistor)
V
1.2 VDC/ max. 100 mA
ON
0 VDC max.
3
V
OFF
Outputs connectable to total
and/or partial energy meters
Pulse duration
220 ms (ON), ≥ 220 ms (OFF)
According to DIN43864
InsulationBy means of optocouplers,
4000 V
RMS
output to
measuring inputs,
RMS
output to
4000 V
power supply input.
Notes
The outputs can be either open
collector type or relay type
(for the relay output refer to
the specifications described
in the “alarm outputs” section).
Alarm outputs (on request)
Number of set-pointsUp to 4, independent
Alarm typeUp alarm, down alarm
with or without latch ,
phase asymmetry,
phase loss, neutral loss.
Monitoring of the variableAll the variables listed at
the paragraph “List of the
connectable variables”.
Set-point adjustment 0 to 100% of the electrical
scale
Hysteresis0 to 100% of the electrical
scale
On-time delay0 to 255 s
Relay statusSelectable: normally
de-energized or normally
gized
ener
Output type
Relay, SPDT
AC 1-8A, 250V
AC
DC 12-5A, 24VDC
AC 15-2.5A, 250VAC
DC 13-2.5A, 24VDC
Min. response time≤ 150 ms, filters excluded,
FFT excluded, setpoint
on-time delay: ”0s”
Insulation4000 V
RMS
output to
measuring input,
RMS
output to
4000 V
power supply input.
NotesThe outputs can be either
relay type or open collector
type (for this latter one, see
the specifications
mentioned in the pulse
outputs)
3
Page 4
M4-96
W
Software functions
PasswordNumeric code of max 3
digits; 2 protection levels of
the programming data
1st levelPassword “0”: no protection
nd levelPassword from 1 to 499:
2
ll data are protected
a
Note: by entering in the
programming mode by
means of password, the
measurement is inhibited.
perating mode selection - Direct measurements for
O
the power quality analysis
(L V or MV/HV connection);
- Indirect energy and power
measurements by means of
watt-hour meters (LV or
MV/HV connection);
- Direct measurements for
the instantaneous variables
(LV connection) and indirect
measurements for the energy variables (LV or MV/HV).
It’s possible to add the
management of gas and
water metering to all of
these working modes.
Pulse weight Water/gas meter inputs:
selectable from 1 to
10000 pulses/m
3
, energy
from 1 to 10000.00
imp/kWh/kvarh
Transformer ratioCT up to 30000A (6000)
VT up to 600 kV (6000)
Filters
Filter operating range0 to 99.9% of the input
electrical scale.
Filtering coefficient1 to 255
Filter action
Display, alarms, serial outputs
(fundamental variables:
V,A,W and their derived ones).
Event loggingOnly with RS232+RTC
module+ Data memory
T ype of dataAlarms and max./min. (max.
480 events) stor
ed with date
(dd:mm:yy) and hour
(hh:mm:ss) reference, data
logger and load pr
ofile
Sampling managementOnly for data logger and load
profile. The sample stored
within the selected time interval results from the continuous average of the measur
values. The average is calcu
lated (min. sample) with an
interval within two following
easurements of approx.
m
200 ms.
Data management type:FIFO
Memory size2 Mbyte
Battery life10 years
Data logger functionThe data are stored at time
intervals from 1 to 60 min.; up
to 8 instantaneous variables
can be selected.
Historical data storing timeSee the “Historical data
storing time table”.
Data formatDate: day, month
ime: hours, minutes, seconds,
t
type of stored variable:
variable value.
Load profile Storage at time intervals of
5-10-15-20-30 min of Wdmd.
Historical data storing time30 weeks: with recording
interval of 5min.
90 weeks: with storing
interval of 15min.
Data formatWdmd variable value, min-
utes, seconds, day, month.
Displaying4 variables per page
1 page that can be layed out
by the user
30 fixed pages
Energy metersUp to 12 pages depending on
the selected tariff mode. Dis-
playing of the consumed
energy up to two months pre-
ceding the current one by
means of password (depend-
ing on the selected tariff mode).
Water and gas meters1 page with two displaying
modes depending on the
selected one:
water and gas m
day-time and night gas m
Stored events240 pages.
Display of the data by means
of password.
Data logger
Display of the data by means
of password with reset func-
tion of the relevant memory
section.
Load profile 3 pages, daily, weekly and
monthly graphic display.
Reset function of the r
memory section by means of
password.
ed
Display languageSelectable:
-
Italian, English, French, Ger
man, Spanish
3
or
3
.
elevant
-
Wm4Soft software: parameter programming and memory data transfer
Wm4Soft NetworkEnglish language softwar
to transfer memory data and
write messages to be
coupled to the SMS alarms,
plus modem
communication
4
e
management. The p rog r a m
runs under Windows
/95/98/98SE/2000/NT/XP
Working modeThree differ ent working
modes can be selected:
- management of a local
.
Page 5
WM4-96
Wm4Soft software: memory data transfer (cont.)
S485 network;
R
- management of modem
ommunication from a single
c
instrument to PC (data download);
- management of modem
communication from local
networks (RS485 communication) to a common PC
data download).
ata StoringIn pre-formatted XLS files
D
Data T ransferManual or automatic at
(
Excel data base).
(
The instantaneous and the
energy , gas, water variables
are stored into two separated
files.
programmable timings.
Modem communicationPhone book management
m4Soft Remote
W
Data accessBy means of RS232 serial
General Specifications
(save up to 100 numbers).
Each number is associated to
a modem that corresponds
ither to the single instrument
e
or to a network of instruments.
Each network can manage up to
10 local instruments.
nglish language software
E
o program the working
t
parameters of the instrument
The program runs under
Windows 95/98/98SE/2000/
NT/XP.
port to be coupled to a GSM
or analogue modem or
RS485 port (also multi-drop
availability.).
Operating0 to +50°C (32 to 122°F)
Temperature
Storage -10 to +60°C (14 to 140°F)
temperature
Insulation reference
voltage300 V
Insulation4000 V
Dielectric strength4000 V
Noise Rejection
CMRR
EMCIE C EN 61000-6-2,
(R.H. < 90% non-condensing)
(R.H. < 90% non-condensing)
RMS
to ground (AV5 input)
RMSbetween all inputs/
outputs to ground
RMS
for 1 minute
100 dB, 48 to 62 Hz
IEC EN 61000-6-3
Other standards
SafetyIEC 61010-1, EN 61010-1
ProductEnergy measurements:
Pulse output DIN43864
ApprovalsCE, UL and CSA
ConnectorScrew-type
Housing
Dimensions96x96x140 mm
MaterialABS,
Protection degreeFront: IP65,
WeightApprox. 600 g
Load profile display
Installed power
Example: the consumed power integrated in 15 minutes exceeds the
installed power
Graph of consumptions
By means of the “F” key you can display the single integration time periods and the details r
power programmed for that time period, the storing time of the Wdmd sample and the relevant value.
Time of the last integration
Wdmd of the last integration period
Profile of the installed power divided
into time periods
elating to the value of the installed
EN61036, EN61268.
max. 2.5 mm2 wires (2x 1.5mm2)
self-extinguishing: UL 94 V-0
NEMA4x, NEMA12
(packing included)
Daily graph: resolution of 15 minutes,
total time of 24 hours.
Weekly graph: resolution of 2 hours,
total time of 7 days.
Monthly graph: resolution of 12 hours,
maximum total time of 31 days.
5
Page 6
M4-96
trftrf
endend
startstart
WINTERWINTER
11
OO:OOOO:OO
O6:OOO6:OO
22 O6:OOO6:OO
O8:OOO8:OO
33 O8:OOO8:OO
1O:OO1O:OO
TARIFFTARIFF
11
trf1
24
6
12
18
2
4
8
10
14
16
20
22
trf2
trf2trf3
trf3
trf4
trf1
trftrf
WINTERWINTER
22
1O:OO1O:OO
16:OO16:OO
33 16:OO16:OO
18:OO18:OO
44 18:OO18:OO
21:OO21:OO
TARIFFTARIFF
11
11 21:OO21:OO
OO:OOOO:OO
startstart
endend
W
Supply specifications
AC/DC voltage90 to 260V (standard)
18 to 60V (on request)
Power consumption≤30VA/12W (90 to 260V)
≤20VA/12W (18 to 60V)
Harmonic distortion analysis
Analysis principleFFT
Harmonic measurement
CurrentUp to the 50thharmonic
VoltageUp to the 50
T ype of harmonicsTHD (V
THD odd (V
THD even (V
L1)
h
t
harmonic
L1)
L1)
The same for the other phases:
L2, L3.
THD (A
L
1)
L
THD odd (A
THD even (A
L
1)
1)
The same for the other phases:
L2, L3.
Harmonic phase angleThe instrument measures the
angle between the single harmonic of “V” and the single
harmonic of “I” of the same
order . Accor ding to the value
of the electrical angle, it is
Harmonic detailsThe harmonic contents is dis-
SystemThe harmonic distortion
possible to know if the distortion is absorbed or generated.
Note: if the system has 3
wires the angle cannot be
measured.
played as a graph showing
the whole harmonic spectrum. This value is also given
as a numerical information:
THD % / RMS value
THD even % / RMS value
THD odd% / RMS value
single harmonics in % /
RMS value
can be measured in singlephase, 3-wire or 4-wire
systems.
Tw: 0.02
Time period management (energy, water and gas metering)
Time periods Energy
Selectable: single time, dual
time and multi-time
Single timeEnergy
, water, gas
Nu m b e r o f m e t e r sT otal: 4 (9-digit)
(no partial meters)
Dual timeEnergy, gas
Nu m b e r o f m e t e r sT otal: 4 (9-digit)
Partial: 8 (6-digit);
Time periods2, programmable within
24 hours
Multi-timeEnergy
otal: 4 (9-digit)
Number of meters
T
Partial: 48 (6-digit);
Time periods4, programmable within
24 hours
Time seasons3, programmable within
12 months;
Pulse outputConnectable to total and/or
partial meters (dual time,
multi-time periods)
Energy metering recordingEnergy consumption history ,
ecording of energy metering
r
by months, oldest data:
2 months before current date.
Recording of total and partial
6
ener
Energy metering recording
(EEPROM)
Max.999,999,999.99kWh/kvarh.
gy metering.
Management concept (multi-time)
(a)
+Wh, +varh (-Wh, -varh)*
max. 4
(b)
Time period (24 hours)
max. 3
(c)
Season (12 months)
Partial: up to 48 meters (a x b x c)
Total: up to 4 meters (“a” type)
* Only if measuring analogue inputs are present.
Example of multi-time energy metering
Page 7
WM4-96
Display pages
Display variables in three-phase systems, 4-wire connections
No 1st variable2nd variable3rd variable4th variable Note
0
1V L1V L2V L3V L-N sysSys = system =
2V L1-2V L2-3V L3-1V L-L sysSys = system =
3
4 W L1W L2W L3W sysSys = system =
5
6VA L1VA L2VA L3VA sysSys = system =
7PF L1PF L2PF L3PF sys
8V L1A L1PF L1W L1
9V L2A L2PF L2W L2
10V L3A L3PF L3W L3
11V sysPF sysvar sysW sysSys = system =
12AnPF sysHzW sysSys = system =
13W dmdvar dmdPF avgVA dmd
14(MAX1)(MAX2)(MAX3)(MAX4)The MAX value can be one of the
15(MAX5)(MAX6)(MAX7)(MAX8)
16(MAX9)(MAX10)(MAX11)(MAX12)
17(MIN1)(MIN2)(MIN3)(MIN4)The MIN value can be one of the
18(MIN5)(MIN6)(MIN7)(MIN8)
19Hystogram FFT V1 (THD, THDo, THDe, Single harmonic)Only if analysis V1-A1 are activated
20Hystogram FFT A1 (THD, THDo, THDe, Single harmonic)Only if analysis V1-A1 are activated
21Hystogram FFT V2 (THD, THDo, THDe, Single harmonic)Only if analysis V2-A2 are activated
22Hystogram FFT A2 (THD, THDo, THDe, Single harmonic)Only if analysis V2-A2 are activated
23Hystogram FFT V3 (THD, THDo, THDe, Single harmonic)Only if analysis V3-A3 are activated
24Hystogram FFT A3 (THD, THDo, THDe, Single harmonic)Only if analysis V3-A3 are activated
25kWh + TOTkWh – TOTkvarh + TOTkvarh – TOT
26kWh+kWh–kvarh+kvarh–Partial energy being measured
27GAS m
SelectableSelectableSelectableSelectable
Σ
Σ
Σ
Σ
A L1A L2A L3AnA n = neutral current
ΣΣ
Σ
var L1var L2var L3var sysSys = system =
Σ
Σ
Σ
Σ
Σ
Σ
Σ
above mentioned (From No 0 to No 13)
above mentioned (From No 0 to No 13)
3
WATER m3 or GAS m3night tariffAccording to the setting
Used calculation formulas
Phase variables
Instantaneous effective voltage
Instantaneous active power
Instantaneous power factor
(TPF)
Instantaneous effective current
Instantaneous appar
ent power
Instantaneous reactive power
System variables
Equivalent three-phase voltage
Three-phase reactive power
Neutral curr
An = AL1+AL2+A
ent
L3
Three-phase active power
Three-phase apparent power
Three-phase power factor
(TPF)
Total harmonic distortion
Where:
i = considered phase (L1, L2 or L3)
T = considered variable (V or A)
n = harmonic order
9A L1xxxxx o
10
11A L3oxxxxo
12An oxxxx o
13
14W L2oxxooo
15W L3oxxoo o
16W sysoxxxxoSys = system =
17var L1xxxooo
18var L2oxxooo
19var L3oxxooo
20var sysoxxxxoSys = system =
21VA L1xxxooo
22VA L2oxxooo
23VA L3oxxooo
24VA sysoxxxxoSys = system =
25PF L1xxxooo
26PF L2oxxooo
27PF L3oxxooo
28PF sysoxxxxoSys = system =
29Hz xxxxx o
30THD V1 xxxxxoFFT V1-A1 ON
31THDo V1xxxxxoFFT V1-A1 ON
32THDe V1xxxxxoFFT V1-A1 ON
33
34THDo V2oxxxxoFFT V2-A2 ON
35THDe V2oxxxxoFFT V2-A2 ON
36THD V3oxxxxoFFT V3-A3 ON
37
38THDe V3oxxxxoFFT V3-A3 ON
39
40
41THDe A1xxxxxoFFT V1-A1 ON
42THD A2oxxxxoFFT V2-A2 ON
43THDo A2oxxxxoFFT V2-A2 ON
44THDe A2oxxxxoFFT V2-A2 ON
45THD A3oxxxxoFFT V3-A3 ON
46
47THDe A3oxxxxoFFT V3-A3 ON
48A dmdxxxxxo
49VA dmdxxxxxx
50
51W dmdxxxxxx◆
52
(x) = available(o) = not available
(
◆) Notes: the alarm outputs can be connected to Wdmd total and/or Wdmd tariff1, Wdmd tariff2, Wdmd tariff3,
Wdmd tariff4.
V L-N sysoxxoo oSys = system=
A L2oxxxxo
W L1xxxooo
THD V2oxxxxoFFT V2-A2 ON
THDo V3oxxxxoFFT V3-A3 ON
THD A1 xxxxxoFFT V1-A1 ON
THDo A1
THDo A3
avg
PF
ASY
systembalanced sys. unbal. sys. bal. sys. unbal. sys.not available
x
o
xxxxx x
o
x
x
xxxx o
xxxoFFT V1-A1 ON
xxxoFFT V3-A3 ON
Σ
Σ
Σ
Σ
Σ
Σ
Σ
Σ
Σ
Σ
Σ
Σ
8
Page 9
WM4-96
Historical data storing time table
Average
values
only
ime
T
nterval
i
(minutes)
1
5
10
15
20
25
30
35
40
45
50
55
60
2 Selected variables
ata storing time
D
D
AYSWEEKYEARS
2217-
1
610871.7
-1743.4
-2625.0
-3496.7
4368.4
-
-52310.1
-61011.7
-69713.4
-78515.1
-87216.8
-95918.4
--20.1
4 Selected variables
ata storing time
D
D
AYSWEEKYEARS
112 -
8
407581.1
8141162.2
-1743.4
-2324.5
2915.6
-
-3496.7
-4077.8
-4658.9
-52310.1
-58111.2
-63912.3
-69713.4
6 Selected variables
ata storing time
D
D
AYSWEEKYEARS
19 -
6
30544610871.7
9151312.5
-1743.4
2184.2
-
-2625
-3055.9
-3496.7
-3927.5
-4368.4
-4799.2
-52310.1
8 Selected variables
ata storing time
D
D
AYSWEEKYEARS
97 -
4
24435488701.3
7321052
9761392.7
1743.4
-
-2094
-2444.7
-2795.4
-3146
-3496.7
-3847.4
-4188
The working mode of data loggingThe Wm4Soft network potential
Average value of
“n” data sample
t
i
Average value of
“n+1” data sample
t
i
Average value of
“n+2” data sample
t
i
ti= time interval (programmable from 1 to 60 minutes)
Download data files from WM4-96 to PC
Type of
Network
Local
No. of
Network
1
No. of
WM4
1
Port
AR1041
Local
Accessory
None
PC
Accessory
None
(RS232)
Local
1
10
AR1041
None
SIU-PC
AR1034
Remote
Remote
Remote
Remote
100
100
100
100
10
10
1
1
AR1041
(RS232)
AR1041
(RS232)
AR1041
AR1034
(RS485)
AR1041
AR1034
(RS485)
Analogue
modem
GSM
modem
SIU-PC+
analogue
modem
SIU-PC+
GSM
modem
Analogue
modem
Analogue
modem
Analogue
modem
Analogue
modem
◆ Notes:
A- Only data download
B- Data download. Each AR1041 can be connected to a GSM
modem in or
der to manage the SMS messages.
C- The WM4-96 can be set to manage the data download or to
manage SMS messages.
User
PC
PC
PC
PC
PC
PC
◆
A
B
A
C
B
B
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M4-96
W
The available modules
TypeN. of Order
hannelscode
c
WM4-96 baseAD1040
AV5.3 measuring inputsAQ1018
AV7.3 measuring inputsAQ1019
18-60VAC/DC power supply AP1021
90-260VAC/DC power supply AP1020
RS485 port (1)1 AR1034
Relay output (*) 1 AO1058
Relay output (*)2 AO1035
Open collector output (*)1 AO1059
Open collector output (*) 2 AO1036
Open collector output (*) 4AO1037
Digital inputs3 AQ1038
Digital inputs + Aux3 AQ1042
RS232 port + R
TC
+ 2Mb Data memory (1) 1 AR1041
Wiring diagrams
Single phase input connections
The possible module combinations
asic unitSlot A Slot B Slot C Slot D
B
RS485 port
Single relay output (*)
Single open collect. output (*)
Dual relay output (*)
Dual open coll. output (*)
4 open coll. output (*)
3 digital inputs
3 digital inputs + Aux
Basic unit Slot E
RS232 port + RTC
+2 Mb Data memory
(*)Alarm or pulse
(1) The RS232 module works as alternative of the
RS485 module.
Fig. 1
CT connectionDirect connectionCT and VT connection
Three-phase, three and four wires input connections
Fig. 13
CT and VT connection (3-wire system)CT connection (4-wire system)CT and VT connection (4-wire system)
CT and VT connection (3-wire system) ARON
- Unbalanced load
Fig. 14
CT and VT connection (3-wire system)
Fig. 15
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M4-96
W
Wiring diagrams of optional modules
VDC
VDC
VDC
VDC
AO1037 4 open collector outputs: The load resistance (Rc) must be designed so that the closed contact current is lower than
100mA; the VDC voltage must be lower than or equal to 30V
VDC: power supply voltage output. Vo+: positive output contact (open collector transistor). GND: ground output contact (open
collector transistor).
AQ1042 digital
input module.
Connection by
means of NPN
transistor.
AQ1042 digital
input module.
Connection by
means of con
tacts.
AO1058 1 relay output
.
-
AQ1042 digital
input module.
Connection by
means of PNP
transistor.
AQ1038 digital
input module.
Connection by
means of con
tacts.
AO1035 2 relay outputs
-
12
AR1034 RS422/485 4-wir
tional devices pr
RS 1, 2, 3...N) are connected in parallel.
The termination of the serial output is carried out
only on the last instrument of the network, by
means of a jumper between (Rx+) and (T).
ovided with RS422/485 (that is
es connection:
addi
-
Page 13
WM4-96
Wiring diagrams optional modules, cont.
AR1034 RS422/485 2-wires connection: additional devices provided with RS422/485 (that is
S 1, 2, 3...N) are connected in parallel.
R
The termination of the serial output is carried out
only on the last instrument of the network, by
means of a jumper between (Rx+) and (T).
ont panel description
Fr
2
1
1. Key-pad
Set-up, programming and display parameters are easily
controlled by the 4 push-buttons.