WURM EMG User manual

EMG
Energy meter
EMG_V1.6.0_PI_2019-10_EN Subject to technical modifications Page 1 of 4
Front view
Features
Consumption recording of electric power by an external current converter
4 independent measurement channels (3-phase) and 4 internal power meters
Saves extensive consumption values for statistical analysis
Graphical representation of power consumption and querying of consumption meters and
statistics in FRIGODATA XP
Simple parameter setting
Plug-in screw terminals
Direct connection of a CAN-USB to the service socket
Connection to the Wurm system via Wurm CAN communication bus (C-BUS) and
FRIGODATA XP

EMG
Energy meter
Page 2 of 4 Subject to technical modifications EMG_V1.6.0_PI_2019-10_EN
Writing conventions
Symbol
Meaning
CAUTION
Avoid the described hazard: otherwise minor or medium physical injury or
damage to property will result.
WARNING
Avoid the described hazard: otherwise there is danger from electric voltage
that could lead to death or serious physical injury.
For your safety
For safe operation and to avoid personal injury and equipment damage through operator error, always
read these instructions, become familiar with the device, and follow all safety instructions on the
product and in this document, as well as the safety guidelines of Wurm GmbH & Co. KG Elektronische
Systeme. Keep these instructions ready to hand for quick reference and pass them on with the device
if the product is sold.
Wurm GmbH & Co. KG Elektronische Systeme accepts no liability in case of improper use or use for
other than the intended purpose.
Target group
These instructions are intended for "service technicians".
Intended use
The EMG is a meter device for electronic power with 4 channels.
WARNING
Danger to life from electric shock and/or fire!
Switch off the power to the entire plant when carrying out installation, wiring or removal
work. Otherwise a mains voltage and/or external voltage may still be present even if the
control voltage is switched off.
The wiring of the device must be carried out only by qualified electricians.
Use only the correct tools for all work.
Check all wiring after connection.
Take note of the maximum loads on all connections.
Never expose the device to moisture, for example due to condensation or cleaning
agents.
Take t
he device out of operation if it is faulty or damaged and is therefore compromising
safe operation.
Do not open the device.
Do not repair the device yourself. If the device requires repairs, send it in with an exact
description of the fault.
Wurm Infocenter
paperless info
Software revisions and validity of documentation
Software version
V1.6.0
2019-10
Documentation status
Any software versions not listed are special solutions for individual projects and are not described in detail in this document.
This document automatically ceases to be valid if a new technical description is issued.
Manufacturer: Wurm GmbH & Co. KG Elektronische Systeme, Morsbachtalstraße 30, D-42857 Remscheid
For further information, see our website at www.wurm.de

EMG
Energy meter
EMG_V1.6.0_PI_2019-10_EN Subject to technical modifications Page 3 of 4
Connection diagram
WARNING
Danger to life from electric shock and/or fire!
Switch power off to the entire plant when wiring! Otherwise, mains voltage and/or
external voltage may still be present, even if the control voltage is switched off.
Always connect the N-wire of the counter!
Installing
WARNING
Danger to life from electric shock and/or fire!
Switch off the power to the entire plant when carrying out installation or removal work.
Otherwise, mains voltage and/or external voltage may still be present, even if the
control voltage is switched off.
This device is designed for top-hat rail
installation. The housing has standard
dimensions and is also suitable for
installation in fuse boxes and
distribution cabinets.
The devices can be positioned next to
one another without gaps.

EMG
Energy meter
Page 4 of 4 Subject to technical modifications EMG_V1.6.0_PI_2019-10_EN
Place the device with the upper guide
edge on the top-hat rail.
Then press the device gently
downward until it engages with the
fastening safety catch on the top-hat
rail.
Shielded cables are recommended for the cabling of data lines and sensor extension leads.
Cable length
Cross-section
Up to 100m
0.75mm²
Up to 400m
1.5mm²
Technical data
Power supply
230V~, +10% / -15%, 50Hz, about 7VA
Nominal current/maximum
current
5A/6A
Current working range
0.05…5A
Measuring precision
2%
Transformer current
Converter primary current adjustable in 5A steps as factor
Central unit
Single-chip microcomputer, data memory
Monitoring system
Self-monitoring of data memory and microcomputer
Communication
3-wire CAN bus interface with integrated power supply,
galvanically isolated, 2 x RJ45 sockets, service socket
Internal clock time
Detection of system clock time on the gateway, internal quartz
clock
Dimensions
(WxHxD) 213 x 91 x 62mm (DIN 43880)
Fastening
Top-hat rail TH 35-15 or TH 35-7.5 (DIN EN 60715)
Ambient temperature
Operation: 0...+55°C, storage: -25…+70°C
Humidity
<=80%
Contamination level
2
Degree of protection
IP20
Weight
About 480g
Shipping weight
About 570g
CE conformity
- 2014/30/EU (EMC Directive)
- 2014/35/EU (Low Voltage Directive)
RoHS II
Valid from
Version 1.6.0