Protection
Relays
2 - 32
SKF Multilog On-Line System IMx-M
User Manual
Figure 2 - 19.
MCU and Relay Aggregation.
Important - It is important to configure relays correctly to ensure that one
circuit fault affects no more than two channels. Each relay module is comprised of
eight individual processors, and each processor controls four relays.
Slot Status Relays on Protection Module
In addition to the relays on relay modules, each protection module also has the
following two slot status relays located in the back of each CMM + PRM slot.
Slot Status Relay Circuit Fault (CF or Cf)
–
The slot status relay circuit fault is normally energized when there is no circuit
fault.
–
Any detected circuit fault will de-energize the circuit fault relay.
–
A detected circuit fault will be indicated by "COMMON Circuit Fault" LED
indicator on the front of protection module.
Slot Status Relay Disarm (Dis)
–
The slot status relay disarm is energized during slot disarm.
These two slot status relays are not user configurable.
