Information

Connecting energy meters to StecaGrid coolcept / coolcept³
inverters
WIM Version: 11/11/2016
Connecting energy meters to StecaGrid coolcept / coolcept³ inverters
Page
1
of
14
1 General information
The StecaGrid coolcept / coolcept³ inverters communicate with selected energy meters via a Modbus
RTU interface. The scope of functionality described here is available for the following types:
Manufacturer Type Phases Inverter Firmware
B+G
SDM220 Modbus
Single
-
phase
HMI APP 2.10.0 or later
B+G
SDM630 Modbus
T
hree
-
phase
HMI APP 2.7.0 or later
Carlo Gavazzi
EM24
-
DIN.AV9.3.X.IS.X
Three
-
phase
HMI APP 2.7.0 or later
Herholdt
ECS1
-
63 CP Modbus
Single
-
phase
HMI APP 2.10.0 or later
Herholdt
E
CS3
-
80 B Modbus
Three
-
phase
HMI APP 2.7.0 or later
Herholdt
ECS3
-
63 CP
Modbus
Three
-
phase
HMI APP 2.7.0 or later
Janitza
ECS1
-
63 CP Modbus
Single
-
phase
HMI APP 2.10.0 or later
Janitza
ECS3
-
5 Basic MID Modbus
Three
-
phase
HMI APP 2.7.0 or later
Janitza
E
CS3
-
63 CP
Modbus
Three
-
phase
HMI APP 2.7.0 or later
Schneider Electric
IEM3155
Three
-
phase
HMI APP 2.10.0 or later
The following applies:
• Only the energy meters that are pre-programmed into the StecaGrid inverters cab be used.
These combinations have been tested and correct functionality is ensured when the inverter
and energy meter are correctly installed and configured.
• It is possible that other models not listed here but from the same manufacturer may also seem
to operate with the same settings. However, full and correct functionality cannot be
guaranteed for these.
• The energy meter must measure consumption from the grid in a positive direction. Please
observe the respective manufacturer's installation and operating manual for this.
Please note: The technical information in this document does not replace the
comprehensive installation and operating manuals for the StecaGrid
coolcept / coolcept³ inverters and for the various energy meters!
2 StecaGrid coolcept / coolcept³ configuration
A 4-core telephone cable with a 4P4C plug (commonly known as an RJ10 plug) can be used at the
inverter side. The individual strands of the cable are connected to screw connections at the various
energy meters.
Device connection Inverter RJ10 Bus signal
Contact / Pin
1
D
ata A
2
Data B
3
Ground
4
---
Fig.1 Contact/pin assignments of RJ10 plug
Notes on the electrical connection of StecaGrid inverters to selected energy meters:
• Material damage caused by electrical voltage! The data connection cable may only be
manufactured by a technical specialist.
• Danger of destroying the Modbus RTU input of the inverter! Contact 4 of the RJ10 socket on
the inverter carries voltage <20V. Do not use this contact.