ABB UNITROL 1020 - Page 156

Chapter 6 - Operation 
148 3BHS335648 E82 UNITROL 1020 User Manual
Monitor and Protection Configuration
Setup \ Monitor and Protection
The window can only be accessed when Offline or when Double Channel (optional) software
is available in the AVR. For more information about the configuration refer to Chapter 3.4.4.4
Double Channel (DCH).
Trip DO outputs zero (logical) during Standby.
Trip DO outputs Trip Status during Standby.
Alarm DO outputs zero (logical) during Standby.
Alarm DO outputs Alarm Status during Standby.
LEDs signalization
All LEDs including DCH Comm.Ok
Signal a ctive, i.e. logical one.
Signal inactive, i.e. logical zero.
Monitoring function does not trigger Alarm.
Monitoring function triggers Alarm.
Latch memory status of the monitoring function (latched to one
when the Output status changes from zero-to-one).
The Latch status is used as input for the Configuration Matrix.
Output status of
the monitoring
function.
Monitoring
Function Name
Monitoring function does not trigger Trip.
Monitoring function triggers Trip.
Configuration Matrix settings