OPM_STS_400_25A_100_1GB_V011
37
GE DE STS: installation and operating manual 1.1 (GB)
Digital Energy
™
Static Transfer Switch
g
*1) DISTURBANCE ALARM appears if at least one of the following events takes place:
•
Overvoltage in at least one of input sources
•
Undervoltage in at least one of input sources
•
Input sources not synchronized
•
Transient voltage surge protection device was burnt
•
Retransfer was blocked
•
Internal supply failure
•
Manual mode of operation was chosen
*2) FAILURE ALARM appears if at least one of the following events takes place:
•
Fuse was burnt
•
Overcurrent
•
Overtemperature
•
Internal STS failure
*3) If MANUAL mode of operation is selected, active source may be changed even if second one is not
operational.
4.6.2 Communication Interface Module CI-M1
The Communication Interface Module CI-M1 is delivered as an option and it is used to communicate
between devices and an external overall system with MODBUS communication protocol. This module allows
the device to be monitored by user control systems.
Data transmission is performed through a serial port that works in RS485 standard. The serial
communication channel is optically isolated from the other part of the module and in consequence it is
isolated from the connected device. The task of the Communication Interface Module CI-M1 is to pass
information about states of signalizing contactors to the overall system.
Transmission parameter:
•
asynchronous serial transmission
•
preset transmission speed
•
1 stop bit
•
8 data bits
•
without parity bit
