Input And Output Signals; Setting Parameters - ABB REL 501-C1 2.5 Technical Reference Manual

6.5
6.6
96
Scheme communication logic (ZCOM)

Input and output signals

Table 103: Input signals for ZCOM (ZCOM-) function block
Signal
BLOCK
CACC
CSUR
CSOR
CSBLK
CSNBLK
CR
CRG
Path in local HMI: ServiceReport/Functions/Impedance/ ZCommunication/FuncOutputs
Table 104: Output signals for ZCOM (ZCOM-) function block
Signal
TRIP
CS
CRL
LCG

Setting parameters

Path in local HMI: Settings/Functions/Groupn/Impedance/ZCommunication
Description
Blocks the Trip and CS outputs
Overreaching protection zone to be used as the local criterion for per-
missive tripping on receipt of the carrier signal
Underreaching function(s) to be used for sending a carrier signal
Overreaching function(s) to be used for sending a carrier signal
Reverse directed protection zone to be used for sending a carrier sig-
nal in a blocking scheme
Forward directed protection zone to be used to inhibit sending of a
carrier signal in a blocking scheme
Carrier signal received
Guard signal received
Description
Trip output
Carrier send
Carrier signal received
Loss of carrier guard signal
Chapter 4
Line distance