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

2.4
2.5
110
Definite time non-directional overcurrent
protection (TOC)

Logic diagram

TOC - TIME DELAYED OVERCURRENT FUNCTION
TOC--BLKTR
TEST
TEST-ACTIVE
&
BlockTOC= Yes
Function Enable
>1
TOC--BLOCK
STIL1
STIL2
STIL3
STIN
Figure 57: TOC function, logic diagram

Input and output signals

Table 115: Input signals for the TOC (TOC--) function block
Signal
BLOCK
BLKTR
Path in local HMI: ServiceReport/Functions/TimeDelayOC/FuncOutputs
Table 116: Output signals for the TOC (TOC--) function block
Signal
TRIP
TRP
TRN
STP
STL1
STL2
STL3
STN
Trip Blocking
>1
&
&
&
&
Description
Block of the overcurrent function.
Block of trip from the overcurrent function
Description
Trip by time delayed overcurrent function.
Trip by time delayed phase overcurrent function when included
Trip by the time delayed residual overcurrent function when included
Start of phase overcurrent function when included
Start phase overcurrent, phase L1 when phase overcurrent function
included
Start phase overcurrent, phase L2 when phase overcurrent function
included
Start phase overcurrent, phase L3 when phase overcurrent function
included
Start of the time delayed residual overcurrent function when included
Chapter 5
Current
tP
TOC--TRP
&
t
tN TOC--TRIP
>1
&
t
TOC--TRN
TOC--STP
TOC--STL1
TOC--STL2
TOC--STL3
TOC--STN
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