Specifications are subject to change without notice WM1-DINDS0303
1
3-dgt multi-range P-based meter
Scrolling of power, energy,
power factor (cos
), current and voltage
Automatic selection of k (kilo) or M (mega) scale
Automatic measurement of peak value
Double measuring input: Up to 5 A or up to 27 A
Degree of protection (front): IP 40
Options:
- Programable alarm setpoint output
- Pulse output for connection to remote
display or PLC
- Serial RS 485 output for connection to a
personal computer
Product Description
Model
Range code
Measurement
Power supply
Setpoints
Option
Ordering Key WM1-DIN27AAD0XX
3-dgt P-based meter for
measuring power, energy,
power factor (cos
), current
and voltage with automatic
selection of scale. A pro-
grammable alarm setpoint
output is available on request.
The housing is easy to
mount on DIN-rail and offers
a degree of protection (front)
of IP 40.
Energy Management
Power Analyzer
Type WM1-DIN
Type Selection
Power Supply
C:
115 VAC, -15% +10%,
50/60 Hz
1)
D:
230 VAC, -15% +10%,
50/60 Hz (standard)
Options
XX:
None (1-phase/
3-phase system with
neutral, balanced load)
TX:
Measurement on
3-phase system with-
out neutral (balanced
load)
PX:
Pulse output (available
only without alarm)
Accuracy
(@ 25C 5C, R.H.
60%)
2 % f.s., 2 dgt
Temperature drift
250 ppm/C,
Display
7-segment LED, h 14.2 mm,
3 digits
Decimal point position
Automatic selection and
indication of "k" or "M" range.
Max. and min. indication
Max.: 999, Min.: 0
Overflow indication
"oF"
Input
Current
27 AAC permanent, direct
conn. max. 32 AAC for
2 minutes.
5 AAC permanent, CT conn.
max. 6 AAC for 2 minutes
Voltage (48 to 62 Hz)
400 VAC (1-phase conn.)
500 VAC (3-phase conn.)
Input (cont.)
Type
1-phase/3-phase with neu-
tral, balanced load (standard)
3-phase without neutral,
balanced load (on request)
Wave form
Undistorted sine wave
(form factor 1.11)
Impedance
Voltmeter input:
1 M
Ammeter input:
1 m
(27 A)
6 m
(5 A)
Key-pad enable input
By means of external, volta-
ge free NC contact. The in-
put is not insulated from the
measuring inputs.
Can be used to avoid un-
wanted programming modifi-
cations, resets and totalized
energy.
Input Specifications
1)
on request
Range code
27A:
5 AAC or 27 AAC
selectable
RX:
RS 485 serial interface
(1-phase/3-phase
system, with neutral
and balanced load)
SX:
RS 485 serial interface
(3-phase system, with-
out neutral and with
balanced load)
Set-points
0:
no alarm
1:
one alarm
WM1-DIN
2
Specifications are subject to change without notice WM1-DINDS0303
Alarms (on request)
Number of setpoints
0 standard (1 on request).
Setpoint adjustment
From 0 to 999 MW/MVA/
MVAR/instantaneous power,
MWh/MVAh/MVARh
energy and from L/C. 10 to
1.00 cos
key-pad program-
mable
Accuracy
2%
Hysteresis
0 to 100% f.s.
key-pad programable
Time delay adjustment
0 to 255 s
key-pad programable
Alarm type
Low or high
key-pad programable
Output type
Static by TRIAC. (24 VAC to
250 VAC/max. 50 mA).
Insulation
2 kV between alarm output
and all inputs and serial out -
put (if available)
Pulse output (on request)
Type
Insulated, open collector:
V
ON
= 0.6 VDC/max. 4 mA
V
OFF
max. 20 VDC
Pulse:
ON status 200 ms
OFF status 800 ms min.-
NPN output
Pulse number
From 1 to 999 pulses for
kWh, kVAh or kVARh
Insulation
2 kV between output and
all inputs and serial output if
available
Serial output (on request)
Type
One-way multidrop RS 485
(double direction: only for
standard static TRIAC output)
Addresses
256 adresses
key-pad selectable.
Data
W, VA, VAR, Wh, VAh, VARh,
V, I, cos
and setpoint status
where present
Data format
1 start bit - 7 data bit -
even parity - 1 stop bit.
1 start bit - 7 data bit -
odd parity - 1 stop bit.
1 start bit - 8 data bit -
no parity - 1 stop bit
Baud-rate
1200, 2400, 4800 and 9600
bauds, key-pad selectable
Connections
2 wires (max. length: 1200 m)
+ shield.
Bias and/or line termination
(selectable by DIP-switch).
Power supply
Separate 5 VDC, power
consumption 70 mA (PSU-
DIN module).
Insulation
By means of optocouplers,
2 kV between serial output
and measuring inputs.
2 kV between 5 VDC power
supply input and measuring
inputs.
Output Specifications
Operating temperature
0 to 50C (32 to 122F)
(R.H. < 90% non-condensing)
Storage temperature
-10 to 60C (14 to 140F)
(R.H. < 90% non-condensing)
Insulation reference voltage
300 V
rms
to ground
Dielectric strength
4000 V
rms
for 1 minute
EMC
EN 50081-1, EN 50082-1
Safety standards
EN 61010-1, IEC 61010-1,
VDE 0411
Connector
Screw-type
Housing
Dimensions
89 x 71.5 x 58.5 mm
(4 DIN-modules)
Material
ABS,
self-extinguishing: UL 94 V-0
Degree of protection
IP 40 (front)
Weight
Approx 320 g
Approvals
CE
General Specifications
Measurements
Voltage, current,
instantaneous power
V
L-N
, or V
L-L
, I, W, VA, VAR
(max. display: 999M-)
Peak value
Accessible by means of the
key-pad in run mode.
Energy
Wh, VAh VARh
(max. display: 999 M-)
Power factor - cos
Accuracy: 4 dgt @ 25C,
voltage
3% f.s.
current
10% f.s.
Display: L.10/1.00/C.10;
In case of voltage and/or
current lower than 3% f.s.,
the display flashes "1.00"
Reset date updating
Month and day of the last
reset manually programmed
by key-pad
Primary range
Transformer ratio program-
mable from 1 to 999
(max. 5000/5A).
Input Specifications (cont.)
Specifications are subject to change without notice WM1-DINDS0303
3
WM1-DIN
AC supply
230 VAC, -15%+10%,
50/60 Hz (standard),
115 VAC, -15%+10%,
50/60 Hz (on request)
Insulation
4 kV between measuring
inputs and power supply
input
4 kV between enable input
and power supply input
Power consumption
2.5 VA
Supply Specifications
Front Panel Description
VA
R
VA
M
/A
K/
V
W
h
PF
reset
S
co
s
1
1. Key-pad
S
Set/enter
Up
Down
Reset
Special function
1. Key-pad (cont.)
"S"
- To enter programming.
"UP/DOWN" (into the programming procedure)
- To select: priority measurement, serial interface para-
meters or pulse output parameters (on request),
maximum power, energy or cos
(on request).
"UP/DOWN" (during measurement)
- Scrolling all the available measurements
"Reset"
- Reset the displayed value (totalized energy or peak
value).
2. Display
3-digit (maximum read-out 999).
Alphanumeric indication by means of 7-segment display
for:
- Displaying of the measured value.
- Indication of programming parameters.
3. LED
To display the selected engineering unit (flashing LED to
notify an alarm activation).
Set-up and programming procedures are easily controlled
by the 4 pushbuttons.
3
2
71.5
8
9
49.5
58.5
4
5
4
6
72.5
Dimensions (mm)
WM1-DIN
4
Specifications are subject to change without notice WM1-DINDS0303
Network Connection
0
~
2
3
0
V
1
1
5
V
~
C
O
M
I
N
2
7
A
11
12
13
14
15
16
17
18
19
10
9
8
7
6
5
4
3
2
1
ENABLE
I
N
V
I
N
5
A
I
N
V
ALARM/
PULSE
OUTPUT
IN 5VDC
RX
TX
~
~
~
~
~
3
L (R/L1, S/L2, T/L3)
N
POWER
LOAD
(#)
(
)
(*)
(
)
POWER
0
~
2
3
0
V
1
1
5
V
~
C
O
M
I
N
2
7
A
11
12
13
14
15
16
17
18
19
10
9
8
7
6
5
4
3
2
1
ENABLE
I
N
V
I
N
5
A
I
N
V
ALARM/
PULSE
OUTPUT
IN 5VDC
RX
TX
~
~
~
~
~
3
L (R/L1, S/L2, T/L3)
N
LOAD
(#)
(
)
(*)
0
~
2
3
0
V
1
1
5
V
~
C
O
M
I
N
2
7
A
11
12
13
14
15
16
17
18
19
10
9
8
7
6
5
4
3
2
1
ENABLE
I
N
V
I
N
5
A
I
N
V
ALARM/
PULSE
OUTPUT
IN 5VDC
RX
TX
~
~
~
~
~
3
POWER
LOAD
(#)
(
)
(*)
R/L1
S/L2
T/L3
(
)
0
~
2
3
0
V
1
1
5
V
~
C
O
M
I
N
2
7
A
11
12
13
14
15
16
17
18
19
10
9
8
7
6
5
4
3
2
1
ENABLE
I
N
V
I
N
5
A
I
N
V
ALARM/
PULSE
OUTPUT
IN 5VDC
RX
TX
~
~
~
~
~
3
POWER
LOAD
(#)
(
)
(*)
R/L1
S/L2
T/L3
Wiring Diagrams
PC/WM1-DIN net-
work connections
(RS485 interface)
Direct connection on single phase or three-phase system
with neutral and balanced load
CT connection on single phase or three-phase system with
neutral and balanced load
Direct connection on three-phase system without neutral
and with balanced load
(*) An external 5 VDC power supply must be connected to
the RS485 serial interface output (see PSU-DIN module)
(
) Attention: CT's cannot be earthed
(
) Attention: The ENABLE input (KEY-PAD enabling) is not
insulated from the measuring inputs
(#) The static ALARM OUTPUT must be connected in series
to the load to be controlled, as if it were a simple contact
CT connection on three-phase system without neutral and
with balanced load
From PSU-DIN module)
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