YZ WM4-96 Technical data

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

M4-96

W

Input specifications

umber of analogue inputs

N

Current 1 (1-phase; system code: 3)
Voltage 1 (1-phase; system code: 3)

Digital inputs

AQ1038 No. of inputs: 3 (voltage-free)

Purpose W

Contact measuring current

AQ1042

Purpose W

Excitation output 16V<+Aux<24VDC Max 15mA
Contact measuring current

Common characteristics

Input frequency Max 20 Hz, dutycycle 50%
Close contact resistance Max 1kΩ
Open contact resistance Min 100kΩ
Insulation 4000VRMS

Max. input number 6 in the configuration:

Accuracy

(display,RS232, RS485) In: 5A, If.s.: 6A

Current (AL1, AL2, AL3) ±0.5% RDG (0.2 to 1.2 In)

(@25°C ±5°C, R.H. ≤60%) ±5mA (0.02 to 0.2 In)

Current (A

) ±1% RDG (0.2 to 1.2 In)

n

Voltage AV5 range: ±0.5% RDG (48 to 300 V

±5°C, R.H. ≤60%) ±1% RDG (84 to 519 V

C

°

(@25

AV7 range: ±0.5% RDG (80 to 480 V

Frequency ±0.1% RDG (40 to 440 Hz)
Active power

°C ± 5°C, R.H. ≤ 60%) ±0.5% (RDG + FS) (PF 0.5 L/C,

(@ 25

Reactive power

(@ 25°C ± 5°C, R.H. ≤ 60%) ±0.5% (RDG + FS) (PF 0.5 L/C,

Apparent power

(@ 25°C ± 5°C, R.H. ≤ 60%) ±0.5% (RDG+ FS)

Energies

(@ 25°C ± 5°C, R.H. ≤ 60%) Active: class 1 according to

3 (3-phase; system code: 3)
4 (3-phase; system code: 3)

measurement synchro-

md

d

nization + var

md

d

and PF

Interfacing with watt-hour meters

+kWh, +kvarh)

(

.
Tariff selection: energy.
<8mA/ 17.5 to 25VDC
Number of inputs: 3 +
excitation

nization + var

output

measurement synchro-

dmd

dmd

and PF
Interfacing with watt-hour meters
(-kWh, -kvarh) or/and
measurements of gas /water m3.
T arif f selection: energy or GAS.

15mA

AQ1038+AQ1042 or 2*AQ1042

Vn: 240VL-N, Vf.s.: 300VL-N

@ 40 to 100 Hz

L-L

±1% RDG (139 to 830 V
Includes also:
frequency , power supply
and output load influences

0.1 to 1.2 In, range AV5) or

(PF 0.5 L/C,

RDG

1%

±

0.1 to 1.2 In, range AV5)

0.1 to 1.2 In, range AV5) or
±1% RDG (PF 0.5 L/C,

1.2 In, range A

0.1 to

to

(0.1

1.2 In, range A

V5)

V5) or
±1% RDG
(0.1 to 1.2 In, range AV5)

EN61036
Reactive: class 2 accor

ding

to EN61268

Ib: 5A, Imax: 6A

0.1Ib: 500mA,
tart-up current: 20mA

S
Un: 240V (AV5), 400V (A V7)

Harmonic distortion 1% FS (FS: 100%)

(@ 25°C ± 5°C, R.H. ≤ 60%)

phase: ±2°; Imin: 0.1Arms;
Imax: 15Ap; Umin: 50V
Umax: 500Vp

.

md

d

Sampling frequency:
6400

samples/s

Additional errors

≤0.3%

Humidity

RDG
Input frequency ≤ 0.4% RDG, 62 to 400 Hz
Magnetic field ≤ 0.5% RDG @ 400 A/m

NOTE: all accuracies are

dmd

.

referred to measurements
carried out with the analogue
input module

Temperature drift

≤200ppm/°C

Sampling rate 6400 samples/s @ 50Hz
Display Graph LCD backlighted

(128x64 dots). Read-out for
the instantaneous variables:
4x4 digit or 4x3
Total energies: 4x9 digit;
Partial energies: 4x6 digit

Max. and min. indication Max. 9999 (999,999,999),

Min. -9999 (–999,999,999)

Measurements Current, voltage, power,

energy ,power factor,frequen­cy, harmonic distortion(see
“Display Pages”). TRMS
measurement of a distorted

)

L-N

Coupling type Direct.

)

)

est factor

Cr

L-N

)

L-L

wave (voltage/curr

3, max. 15Ap/500Vp “A

≤

(L-N), 15Ap/800Vp “AV7” (L-N)

Ranges (impedances)

AV5 58/100 V (> 500 kΩ) -

≤

1 AAC (
58/100 V (> 500 k
5 AAC (

≤ 0.3 VA)
240 V/415 V (> 500 kΩ) ­1 AAC (≤ 0.3 VA)
240 V/415 V (> 500 kΩ) ­5 AAC (≤ 0.3 VA)

AV7 100/170 V (> 500 kΩ) -

1 AAC (≤ 0.3 VA)
100/170 V (> 500 k

≤ 0.3 VA)

5 AAC (
400/690 V (> 500 kΩ) ­1 AAC (≤ 0.3 VA)
400/690 V (> 500 kΩ) ­5 AAC (≤

Frequency 40 to 440 Hz
Overload protection

Continuous: voltage/current: AV5: 300V

V7: 480V

A

For 1s: voltage/current: AV5: 600V

AV7: 960V

@ 50Hz

, 60% to90% R.H.

1

/2digit

ent) .

0.3 VA)
) -

Ω

) -

Ω

0.3 VA)

L-N
L-N

/1040V

L-N

/1660V

L-N

/ 500V
/ 830V

L-L
L-L

L-L
L-L

/ 6A

/ 6A
/120A
/120A

RMS

V5

;

”

2

WM4-96

Output specifications

RS422/RS485
(on request) Multidrop

idirectional (static and

b
dynamic variables)

onnections 2 or 4 wires, max. distance

C

1200m, termination
directly on the module

Addresses

from 1 to 255, key-pad selectable
Protocol MODBUS 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 format 1 start bit, 8 data bit, no

parity/even parity/
odd parity, 1 stop bit

Baud rate 1200, 2400, 4800 and 9600

bit/s selectable

Insulation By 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)
Connections 3 wires, max. distance15m
Data format 1 start bit, 8 data bit,

no parity, 1 stop bit
Baud rate 2400, 4800, 9600,

38400 bit/s
Protocol MODBUS RTU (JBUS)
Other features As 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 Modem For 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 WM4 Siemens 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 outputs Up 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

Insulation By 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-points Up to 4, independent
Alarm type Up alarm, down alarm

with or without latch ,
phase asymmetry,
phase loss, neutral loss.

Monitoring of the variable All the variables listed at

the paragraph “List of the
connectable variables”.

Set-point adjustment 0 to 100% of the electrical

scale

Hysteresis 0 to 100% of the electrical

scale
On-time delay 0 to 255 s
Relay status Selectable: 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”

Insulation 4000 V

RMS

output to

measuring input,

RMS

output to

4000 V
power supply input.

Notes The outputs can be either

relay type or open collector
type (for this latter one, see
the specifications
mentioned in the pulse
outputs)

3

M4-96

W

Software functions

Password Numeric code of max 3

digits; 2 protection levels of
the programming data

1st level Password “0”: no protection

nd level Password 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 ratio CT up to 30000A (6000)

VT up to 600 kV (6000)

Filters

Filter operating range 0 to 99.9% of the input

electrical scale.

Filtering coefficient 1 to 255
Filter action

Display, alarms, serial outputs
(fundamental variables:

V,A,W and their derived ones).

Event logging Only with RS232+RTC

module+ Data memory

T ype of data Alarms 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 management Only 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 size 2 Mbyte
Battery life 10 years

Data logger function The data are stored at time

intervals from 1 to 60 min.; up

to 8 instantaneous variables

can be selected.
Historical data storing time See the “Historical data

storing time table”.
Data format Date: 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 time 30 weeks: with recording

interval of 5min.

90 weeks: with storing

interval of 15min.
Data format Wdmd variable value, min-

utes, seconds, day, month.

Displaying 4 variables per page

1 page that can be layed out

by the user

30 fixed pages
Energy meters Up 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 meters 1 page with two displaying

modes depending on the

selected one:

water and gas m

day-time and night gas m
Stored events 240 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 language Selectable:

-

Italian, English, French, Ger

man, Spanish

3

or

3

.

elevant

-

Wm4Soft software: parameter programming and memory data transfer

Wm4Soft Network English 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 mode Three differ ent working

modes can be selected:

- management of a local

.

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 Storing In pre-formatted XLS files

D

Data T ransfer Manual or automatic at

(

Excel data base).

(
The instantaneous and the
energy , gas, water variables
are stored into two separated
files.

programmable timings.

Modem communication Phone book management

m4Soft Remote

W

Data access By 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.).

Operating 0 to +50°C (32 to 122°F)
Temperature

Storage -10 to +60°C (14 to 140°F)
temperature

Insulation reference
voltage 300 V

Insulation 4000 V

Dielectric strength 4000 V
Noise Rejection

CMRR

EMC IE 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

Safety IEC 61010-1, EN 61010-1
Product Energy measurements:

Pulse output DIN43864

Approvals CE, UL and CSA
Connector Screw-type

Housing

Dimensions 96x96x140 mm
Material ABS,

Protection degree Front: IP65,

Weight Approx. 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