Technical Guide P12y/EN FT/D22
User Guide
MiCOM P125/P126/P127 Page 89/108
4.6.6 Submenu Inputs
Each relay model has a fixed number of opto-isolated logic inputs.
Logic inputs:
Model P125 P126 P127
Logic Input 4 7 7
With the submenu Inputs it is possible to assign a label or an automation function to
each logic input (see the following table):
Label
designation
Label description P125 P126 P127
None No link/assignment X X X
Unlatch Unlocks latched output relays X X X
Blk Log 1 Blocking logic 1 X X X
Blk Log 2 Blocking logic 2 X X
52 a Position of the circuit breaker (open) X X
52 b Position of the circuit breaker (close) X X
Aux 1 Assigning external information to input Aux1 X X X
Aux 2 Assigning external information to input Aux2 X X X
CB FLT External failure information from the CB X X
q Reset
Reset of the thermal state X X
Change set
Change of setting group (default setting group 1)
X X
Log Sel 2 Logic selectivity 2 X X
Log Sel 1 Logic selectivity 1
Cold L PU Cold load pick up assignment X X
Strt Dist Starting of the disturbance recording function X X
Block_79 Blocking of the autoreclose function [79] X X
Trip Circ Trip circuit supervision input X X
Start t BF Start CB fail timer from external input X X