Signalling Outputs (So); Trip Circuit Supervision - ABB REM 543 Technical Reference Manual

ABB Network Partner
4.1.7.2.
4.1.8.
Page 36
REM 543 Protection,
Monitoring and Control

Signalling outputs (SO)

The signalling relay outputs (BIO1_5_SO_) are not heavy-duty ones and thus they can-
not be used for controlling e.g. a circuit breaker. Available relay contacts are either Nor-
mally Open or Normally Open/Normally Closed type (NO or NO/NC), see the figure
below. These outputs can be used for alarming and other signalling purposes.
NO/NC
e.g.
PS1_4_SO1
Fig. 4.1.7.2.-1. Signalling output (SO).

Trip circuit supervision

The trip circuit supervision inputs TCS1 and TCS2 in the REM 543 machine terminal
consist of two functional units:
• a constant current generator including the necessary hardware elements
• a software-based functional unit for signalling
The functional units are based on function blocks included in a condition monitoring
library. The names of the function blocks are CMTCS1 (1MRS100191) and CMTCS2
(1MRS 100192).
The input/output circuits are galvanically isolated from each other. The constant current
generator forces a 1.5 mA measuring current through the circuit-breaker trip circuit. The
constant current generator is connected over the trip contact of the machine terminal cir-
cuit. The current generator for the TCS1 is connected to the terminals X4.1/12-13 and
the current generator for the TCS2 to the terminals X4.1/17-18 of the REM 543
machine terminal.
Under no-fault conditions, the voltage over the contact of the constant current generator
must be above 20 V ac/dc.
Technical Reference Manual
NO
e.g.
BIO1_5_SO1
Part 1, General
nonc