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8.1.4 Analog meters – Factory integrated type
The digital measurements can be associated with needle analog meters (on the front panel). These meters provide
a direct reading of voltage and current.
These options are available for:
- Charger voltage and current.
8.1.5 Ground fault detection – Plug-in type option
The option is integrated into the GCAU board.
The ground fault detection circuit monitors the impedance of the connection between ground and the positive and
negative polarities of the DC output.
An alarm is delivered on detection of a leakage current 10 mA between ground and one of the output polarities.
How to activate this option on the control card : charger display, refer to § 6.7.3.3 “alarms and events”
8.2 COMMUNICATION OPTIONS
Depending on configuration the Protect RCS rectifier charger can be equipped with the following communication
options.
8.2.1 RS485 – Modbus RTU interface connection – Factory integrated type
This option includes is a piggy-back board (A71) connected to the extension bus of the GCAU control board and
additional EIA485 interface & connecting board (A72). It allows to connect several rectifier systems on one common
communication bus (centralized supervision of the rectifers) to communicate locally or remotely with a computer.
The rectifiers are acting as slaves and the central computer as the master. By giving the different rectifiers different
slave numbers, it is possible to control each individual rectifier.
A 2,5 m cable with RJ (6/6) is supplied with this option to connect A71 and A72 boards.
The communication port is fully isolated from the charger output and/or internal control.
The complete MODBUS mapping of the various parameters are available.
The Communication speed is 2400, 4800, 9600, 19200 or 38400 Bauds.
For more details please refer to separate Modbus operation manual document.
8.2.2 IEC 61850 Server interface – Plug-in type
The Modbus RTU interface connection option needs to be installed in the charger so that the IEC61850
communication can be implemented.
Rectifier Alarms / Status and Analog measurements are cyclically polled from the rectifier supervision control board
GCAU A1 by the gateway and translated to IEC 61850 protocol available at the RJ45 Ethernet port.
The detail description is available in the separate IEC 61850 Server interface manual document.
How to instal and activate this option on the control card : Refer to the option installation manual
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