InteliPro, SW version 1.4,
©
ComAp
–
April 2014
InteliPro 1.4 Comprehensive Guide - rev. 1
4-10
Library of binary output functions
Some binary output signals are provided in both positive and negative logic in order to follow the
requirements of the application:
Due to increased safety requirements, some protective relays require that negative logic is
used, assuring that loss off power supply always causes the relay to trip. I.e. the relay
contacts are used, with fault-free position maintained in energized state. In case of power
supply fail, the unit goes to “fault” indication position. The outputs using negative log
ic are
marked with exclamation mark "!" as the first character of their name.
In some applications, the negative logic is not a required functionality. The function of opening
the circuit breaker in case of loss of power supply is not accepted as a safety point and the
safety is assured by different means e.g. in the superior system or within the protection relays
intertripping scheme. In such case, the outputs with positive logic (without the exclamation
mark) can be used to signal the detected failure state.
Common Alarm
The output closes in case any alarm comes up. The output opens if Fault Reset
button is
pressed.
Comm Trp
Common output of all built-in protections, activates whenever any of protections trips. Resets
automatically when
function is activated, otherwise has to be reset manually
using the Fault Reset
button.
!Comm Trp
Inverted polarity of the Comm Trp signal.
Bak Comm Trp
Output for back-up CB trip contact. Closes if Comm Trp is active and CB1 Feedback doesn't
deactivate within BackupTrip del. Resets automatically when AutoFaultReset function is activated,
otherwise has to be reset manually using Fault Reset
button. If any of the CB1 Feedback,
Bak Comm Trp or !Bak Comm Trp outputs is not configured on any physical input or output, this
function is blocked.
!Bak Comm Trp
Inverted polarity of the Bak Comm Trp signal.
Del Comm Trp
Common output for all protections producing delayed pulse of defined length (see Comm Trp Del and
Comm Trp Len).
!Del Comm Trp
Inverted polarity of the Del Comm Trp signal.
Trp 1
Trip output assignable to different protection stages by setpoint xxx Trp BO (e.g. V Trp BO). It
activates whenever any assigned protection trips. It resets automatically when AutoFaultReset
