75
Local acceleration logic (ZCLC)
Chapter 4
Line distance
3.4
Logic diagram
Figure 30:
Simplified logic diagram for the local acceleration logic
3.5
Input and output signals
Table 90:
Input signals for the ZCLC (ZCLC-) function block
Path in local HMI: ServiceReport/Functions/Impedance/ComLocal/FuncOutputs
Table 91:
Output signals for the ZCLC (ZCLC-) function block
99000455.vsd
ZCLC-BLOCK
ZCLC-
ARREADY
1
>1
ZCLC-NDST
&
&
ZCLC-EXACC
ZCLC-BC
ZCLC-LLACC
>1
STILL
t
15 ms
&
ZoneExtension = On
LossOfLoad = On
&
&
>1
ZCLC-TRIP
Signal
Description
BLOCK
Blocks function
BC
Circuit breaker closed
LLACC
Connected to function to be used for tripping at loss of load accelera-
tion
ARREADY
Releases function used for zone extension for immediate tripping
EXACC
Connected to function to be used for tripping at zone extension
NDST
Connected to function to be used to prevent zone extension for its
picked-up duration if the release for zone extension is not present
when it picks-up
Signal
Description
TRIP
Trip output
Summary of Contents for REL 501-C1 2.5
Page 1: ...Technical reference manual Line distance protection terminal REL 501 C1 2 5 ...
Page 2: ......
Page 26: ...14 Introduction to the technical reference manual Chapter 1 Introduction ...
Page 42: ...30 Technical data Chapter 2 General ...
Page 66: ...54 Blocking of signals during test BST Chapter 3 Common functions ...
Page 142: ...130 Time delayed overvoltage protection TOV Chapter 6 Voltage ...
Page 162: ...150 Autorecloser AR Chapter 9 Control ...
Page 174: ...162 Event function EV Chapter 10 Logic ...
Page 210: ...198 Serial communication Chapter 12 Data communication ...
Page 226: ...214 Serial communication modules SCM Chapter 13 Hardware modules ...
Page 230: ...218 Terminal diagrams Chapter 14 Diagrams Figure 87 REL 501 C1 with DC switch ...
Page 234: ...222 Terminal diagrams Chapter 14 Diagrams ...
Page 237: ......