Logic Diagram; Input And Output Signals - ABB REL 501-C1 2.5 Technical Reference Manual

1.4
1.5
106
Instantaneous non-directional overcurrent
protection (IOC)

Logic diagram

IOC - INSTANTANEOUS PHASE OVERCURRENT FUNCTION
TEST
TEST-ACTIVE
BlockIOC = Yes
IOC--BLOCK
STIL1
STIL2
STIL3
STIN
Figure 53: IOC function, logic diagram

Input and output signals

Table 111: Input signals for the IOC (IOC--) function block
Signal
BLOCK
Path in local HMI: ServiceReport/Functions/InstantOC/FuncOutputs
&
Function Enable
>1
>1
>1
Description
Block of the instantaneous overcurrent protection function.
Chapter 5
Current
IOC--TRIP
&
IOC--TRP
&
IOC--TRL1
&
IOC--TRL2
&
IOC--TRL3
&
IOC--TRN
&
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