CARLO GAVAZZI WM20 User manual

WM20
ENITDEFRESDA
INSTRUCTION MANUAL
MANUALE D’ISTRUZIONI
BETRIEBSANLEITUNG
MANUEL D’INSTRUCTIONS
MANUAL DE INSTRUCCIONES
BRUGERVEJLEDNING

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8021572 | WM20 | © 2016 | CARLO GAVAZZI Controls SpA
Table of contents
Introduction 7
Information property.............................................................................. 7
Safety messages ................................................................................. 7
General warnings.................................................................................. 7
Service and warranty............................................................................ 8
Description............................................................................................ 8
Components ......................................................................................... 8
Breakdown of code key of main unit (rear of unit) ................................ 9
Breakdown of code key of compatible accessory modules
(rear of module) .................................................................................... 9
Breakdown of code key of pre-assembled WM20 (rear of main unit)... 10
Possible congurations ........................................................................ 10
Description of main unit 11
Main unit - front..................................................................................... 11
Main unit - rear...................................................................................... 11
Main unit - accessories......................................................................... 12
Measurement menu display.................................................................. 12
Settings and reset menu display........................................................... 12
Information menu display...................................................................... 13
Information and warnings ..................................................................... 13
Description of accessory modules 14
Digital output modules .......................................................................... 14
Communication modules ...................................................................... 14

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Installation 15
General warnings.................................................................................. 15
Installing the WM20 .............................................................................. 15
Sealing the terminals on the main unit ................................................. 17
Installing the accessory modules.......................................................... 18
Main unit connection diagram .............................................................. 18
Accessory module connection diagrams ............................................. 19
Use: Menu description 20
Measurement menu.............................................................................. 20
List of meters ........................................................................................ 20
List of measurement pages .................................................................. 21
Settings menu....................................................................................... 24
Default values of alarm parameters...................................................... 31
Default values of digital output parameters .......................................... 31
Information menu.................................................................................. 31
Reset menu .......................................................................................... 33
Use: how to work 34
Navigating the menus........................................................................... 34
Common operations ............................................................................. 34
Specic operations ............................................................................... 35
Setting a parameter .............................................................................. 36
Running a pulse transmission test........................................................ 36
Resetting maximum and average power values................................... 37
Resetting total energy meters............................................................... 38
Identifying the variable in alarm status ................................................. 39
Troubleshooting .................................................................................... 39

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8021572 | WM20 | © 2016 | CARLO GAVAZZI Controls SpA
Essential information 43
Numerical parameters .......................................................................... 43
Address parameters ............................................................................. 44
Alarm settings....................................................................................... 45
Filter settings ........................................................................................ 46
Conguration mode .............................................................................. 48
Enabling the accessory modules.......................................................... 48
Conguring digital output modules ....................................................... 49
Maintenance and disposal 50
Cleaning................................................................................................ 50
Responsibility for disposal .................................................................... 50
Common specications 51
General features................................................................................... 51
Input and output insulation ................................................................... 52
Environmental specications ................................................................ 52
Main unit specications 53
General features................................................................................... 53
Electrical specications......................................................................... 54
Measurement accuracy ........................................................................ 55
Power supply ........................................................................................ 56
LED....................................................................................................... 57
Digital output module specications 58
General features................................................................................... 58
Static output module (M O O2)............................................................. 58

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Relay output module (M O R2)............................................................. 59
Communication module overview 59
General features................................................................................... 59
M C 485232 module ............................................................................. 60
M C ETH module .................................................................................. 61
M C BAC IP module.............................................................................. 61
M C BAC MS module............................................................................ 62
M C PB module..................................................................................... 63
Conformity 64
Download 65
Figures 395

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8021572 | WM20 | © 2016 | CARLO GAVAZZI Controls SpA
WM20 - Instruction manual
Power analyzer for three-phase systems
Introduction
Information property
Copyright © 2016, CARLO GAVAZZI Controls SpA
All rights reserved in all countries.
CARLO GAVAZZI Controls SpA reserves the right to apply modications or make
improvements to the relative documentation without the obligation of advance notice.
Safety messages
The following section describes the warnings related to user and device safety included
in this document:
DANGER! Indicates a risky situation, which if not avoided may lead to
death or serious physical injury.
WARNING: indicates obligations that if not observed may lead to damage to
the device.
General warnings
This manual is an integral part of the product. It should be consulted for all
situations related to installation and use. It must be kept in good condition and in
a clean location accessible to all operators.
WARNING: no person is authorized to open the analyzer. This operation is
reserved exclusively for CARLO GAVAZZI technical service personnel.

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Service and warranty
In the event of malfunction, fault, requests for information or to purchase accessory
modules, contact the CARLO GAVAZZI branch or distributor in your country.
WM20
Description
WM20 is a modular power analyzer for single, two and three-phase systems.
It is made up of a maximum of three components: main unit that displays measurements
on the LCD display with management of two alarms, and two accessory modules, one
with digital outputs and the other for communication. The digital output module associates
alarms with static or relay outputs and/or transmits pulses proportional to energy
consumption. The communication module lets you congure the analyzer and transmit
data using a different communication protocol according to the version.
Components
The WM20 is made up of the following components:
Module Description
WM20 Main unit, measures and displays main electrical variables.
With LCD display and touch keypad, it lets you set
measurementparameters, congureaccessory modules and
manageup to two alarms.
Digital outputs Accessory module with two digital outputs. Expands main unit
capacity, specically allowing you to:
• transmit pulses proportional to energy consumption
• control digital outputs (static or relay according to the module)
Communication Accessory module that lets you transmit data to other systems or
conguret he analyzer from remote

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8021572 | WM20 | © 2016 | CARLO GAVAZZI Controls SpA
Breakdown of code key of main unit (rear of unit)
WM20 AVx 3 a
Model AV4: From 380 to 690 V
L-L ac, 1(2) A, connection
via CT
AV5: From 380 to 690 V
L-L ac, 5(6) A, connection
via CT
AV6: From 100 to 230 V
L-L ac, 5(6) A, connection
via CT
AV7: From 100 to 230 V
L-L ac, 1(2) A, connection
via CT
System:
• balanced and
non-balanced
three-phase
with 3 or 4
wires
• Two-phase
(3-wire)
• Single-phase
(2-wire)
H: auxiliary power
supply from 100 to
240 V ac/dcL: auxiliary
power supply from 24 to
48 V ac/dc
Breakdown of code key of compatible accessory modules
(rear of module)
Code key Type Module description
M O O2 Digital outputs Double static output
M O R2 Double relay output
M C 485232
Communication
Modbus RTU communication on RS485/RS232
M C ETH Modbus TCP/IP communication on Ethernet
M C BAC IP BACnet IP communication on Ethernet
M C BAC MS BACnet MS/TP communication on RS485
M C PB Probus DP V0 communication on RS485

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Breakdown of code key of pre-assembled WM20 (rear of main unit)
WM20 AVx 3a aa aa XX
Same as code
key of main
unit,
see "Key to
code key of
the main unit
(rear of unit)"
on page 9
Output type:
XX: none
O2: double
static output
R2: double
relay output
Communication type:
XX: none
S1: RTU Modbus communication on
RS485/RS232
E2: TCP/IP Modbus communication
on Ethernet
B1: BACnet IP communication on
Ethernet
B3: BACnet MS/TP communication
on RS485
P1: Probus DP V0 on RS485
No
option
included
Possible congurations
WM20 only WM20 + 1 module WM20 + 2 modules
WARNING: maximum 1 module per type. In the conguration with 2 modules, the
communication module is installed last.

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Description of main unit
Main unit - front
Fig. 1 Area Description
AOptical port and plastic support for OptoProg (CARLO GAVAZZI)
connection
BBacklit LCD display
CLED that blinks with frequency proportional to active energy
consumption, see "LED" on page 57
DTouch keypad
Main unit - rear
Fig. 2 Area Description
ADetachable power supply terminals
BDetachable current input terminals
CDetachable voltage input terminals
D
Rotary selector to lock conguration:
position 1: conguration via keypad or communication enabled (icon
on display)
position 7: conguration via keypad or communication locked (icon
on display)
ELocal bus port for accessory modules
FPower supply status LED, see "LED" on page 57
e

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Main unit - accessories
Fig. 3 Area Description
ASealable terminal caps
BLateral brackets
Measurement menu display
Fig. 4 Area Description
A
Area for energy meters and operating hours with relative unit
of measurement, see “List of meters” on page 20. These are
displayed independently from the contents displayed in area C.
BArea for warnings and messages, see “Information and warnings”
on page 13
C
Area for electrical variable measurements and relative units of
measurement (x 3 lines), “List of measurement pages” on page
21. These determine the measurement page.
Settings and reset menu display
Fig. 5 Area Description
APage title, see “Settings menu” on page 24 and “Reset menu” on
page 33
BPage title, see “Settings menu” on page 24 and “Reset menu” on
page 33
CCurrent value/option. Blinks when in edit mode.
DPossible value/option range

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Information menu display
Fig. 6 Area Description
APage title, see “Information menu” on page 31
BArea for warnings and messages, see “Information and warnings”
on page 13
CInformation on current page
Information and warnings
Symbol Description
/
Conguration status:
• locked: rotary selector at rear of main unit in position 7
• enabled: rotary selector at rear of main unit in position 1
/Communication status (reception/transmission)
Voltage connection error (inverted sequence)
The measurements displayed are total harmonic distortions (THD)
expressed as a percentage
The measurements displayed are average values
The measurements displayed are maximum values
Warning of at least one active alarm:
• permanent: on the information menu page related to the active alarm
and activated digital output where relevant
• blinking: on the measurement menu pages

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Symbol Description
Feedback after pressing a button
Description of accessory modules
Digital output modules
Fig.7 Area Description
AMain unit fastening pins
BDetachable digital output terminals
CLocal bus port for communication module
DLocal bus port for main unit connection
Communication modules
NOTE: the image refers to the M C BAC MS module.
Fig.8 Area Description
A
Communication port area
NOTE: the communication ports depend on the communication
module, see "Communication module overview" on page 59.
BMain unit fastening pins
CCommunication status LED (M C 485232, M C BAC MS, M C PB),
see "Communication module overview" on page 42.

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Fig.8 Area Description
DLocal bus port for main unit or communication module connection
Installation
General warnings
DANGER! Live parts. Heart attack, burns and other injuries. Disconnect
the power supply and load before installing the analyzer or connecting/
disconnecting the accessory modules. Use the analyzer only at the
specied voltage and current values (see “Electrical specications”
on page 38). The energy analyzer should only be installed by qualied/
authorized personnel experienced in working in safety.
Installing the WM20
Operation Procedure
To connect the
electrical cables
to the terminals
DANGER! Live parts. Heart attack, burns and other
injuries. Disconnect the power supply and load
before connecting the electrical cables.
See “Main unit connection diagrams” on page 18 and “Accessory
module connection diagrams” on page 19.
To seal the
terminal caps on
the main unit
See “Sealing the main unit terminals” on page 11

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Operation Procedure
To connect
the accessory
modules
DANGER! Live parts. Heart attack, burns and other
injuries. Disconnect the power supply and load
before connecting the accessory modules.
See “Installing the accessory modules” on page 18.
For panel
mounting
Drill a hole with the dimensions 91 x 91 mm in the panel and follow
the procedure shown in gure 9.
To set
parameters and
congure the
system
If using ..... then...
the keypad
of the main
unit
see “Use: menu description” on page 16 and “Use:
how to work” on page 34
UCS
software
1.Connect to the WM20 via a Modbus RTU or
Modbus TCP/IP communication port or via
optical port using OptoProg.
2.Modify the parameters from the settings menu
or load a default conguration in ofine mode.

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Operation Procedure
Locking the
conguration
If the main
unit ... then...
has no
accessory
modules
connected
position the rotary selector at the rear of the module
to 7.
is connected
to accessory
modules
1.Disconnect the power supply and load
2.Remove the accessory modules
3.Position the rotary selector at the rear of the main
unit to 7.
4.Re-install the modules and reconnect the power
supply and load.
Sealing the terminals on the main unit
Fig.10 1.Remove the terminals.
2.Apply the four seals, each in a hole of the main unit [A].
3.Ret the terminals.
4.Position the terminal caps, passing the seals through the corresponding
holes of the caps [B].
5.Close the seal.

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Installing the accessory modules
Fig.11 1.Ensure that the modules tobe installed are supported by the main
unit, see “Key to codes key of compatible accessory modules (rear of
module)” on page 9 and the admissible module congurations, see
“Possible congurations“ on page 10.
2.Disconnect the power supply and load.
3.Remove the protection cover of the local bus port on the main unit.
4.Ensure that the fastening pins of the module are in the “unlocked”
position .
5.Align the accessory module with the main unit and apply slight pressure.
6.Turn the fastening pins of the last module connected to the “locked”
position .
7.To connect a second accessory module, remove the protection cover of
the local bus port of the previously connected accessory module.
8.Repeat steps 4–6 for the second module.
Main unit connection diagram
Diagram Description System
Fig.12 Three-phase system with neutral (4-wire) unbalanced load and 3
CT 315 mA fuse (F). 3P.n
Fig.13 Three-phase system with neutral (4-wire), unbalanced load, 3 CT
and 3 VT/PT 3P.n
Fig.14 Three-phase system with neutral (4-wire), balanced load, 1 CT 315
mA fuse (F). 3P.2
Fig.15 Three-phase system with neutral (4-wire), balanced load, 1 CT
and 1 VT/PT 3P.2
Fig.16 Three-phase system without neutral (3-wire) unbalanced load and
3 CT. 315 mA fuse (F). 3P

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Fig.17 Three-phase system without neutral (3-wire), unbalanced load, 3
CT and 2 VT/PT. 3P
Fig.18 Three-phase system without neutral (3-wire) unbalanced load and
2 CT (Aron). 315 mA fuse (F). 3P
Fig.19 Three-phase system without neutral (3-wire), unbalanced load, 2
CT (Aron) and 2 VT/PT. 3P
Fig.20 Three-phase system without neutral (3-wire), balanced load, 1 CT. 3P.1
Fig.21 Three-phase system without neutral (3-wire), balanced load, 1 CT
and 2 VT/PT. 3P.1
Fig.22 Two-phase system (3-wire), 2 CT. 315 mA fuse (F). 2P
Fig.23 Two-phase system (3-wire), 2 CT and 2 VT/PT. 2P
Fig.24 Single-phase system (2-wire), 1 CT. 315 mA fuse (F). 1P
Fig.25 Single-phase system (2-wire), 1 CT and 1 VT/PT. 1P
Fig.26 Auxiliary power supply (H). 250 V [T] 630 mA fuse (F).
Auxiliary power supply (L). 250 V [T] 3.15 A fuse (F)–
Accessory module connection diagrams
Diagram Description
Fig.27 M O O2. Double static opto-mosfet output.
Fig.28 M O R2. Double relay output.

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Diagram Description
Fig.29 M C 485232. RS485 serial port.
NOTE: additional meters with RS485 are connected in daisy chain. The
serial output must only be terminated on the last network meter connecting
terminals B+ and T.
Fig.30 M C 485232. RS232 serial port.
Fig.31 M C BAC MS. RS485 serial port.
NOTE: additional meters with RS485 are connected in daisy chain. The
serial output must only be terminated on the last network meter connecting
terminals B+ and T.
Use: Menu description
Measurement menu
The measurement menu contains all pages used to display meters and other electrical
variables.
List of meters
A list of the meters displayed is provided below:
• kWh Total imported active energy
• kvarh Total imported reactive energy
• kWh -- Total exported active energy
• kvarh -- Total exported reactive energy
• hLoad operating hours with current absorption exceeding the set threshold, see
“Settings menu” on page 24
NOTE: the analyzer also manages the partial meters of active and reactive energy, both
imported and exported. Partial meters can only be viewed and reset via communication.