Woodward MRM4, Manual

Page: 244 / 460

Module: Protection (Prot)
Each protection stage can decide automatically about a trip. The trip decision is passed on to module »Prot«
and the tripping commands of all protection stages are combined in module »Prot« by an OR logic (Collective
signals, direction decisions, information about phases). The tripping commands are executed by the module
» TripControl« .
The tripping commands are executed by the module »TripControl«
If a protection module is activated respectively issues a trip command to the CB two alarm signals will be
created:
1. The module or the protection stage issues an alarm e.g. »I[1].A
LARM
« or »I[1].T
RIP
«.
2. The master module »Prot« collects/summarizes the signals and issues an alarm or a trip signal
»P
ROT
.A
LARM
« »P
ROT
.T
RIP
«.
Page 244 EN MRM4 01/11