Technical Data - ABB REB650 Technical Manual

Section 9
Secondary system supervision
9.2.7
158
TCS_STATE
BLOCK
ANSI11000289 V1 EN
Figure 63: Functional module diagram
Trip circuit supervision generates a current of approximately 1.0 mA
through the supervised circuit. It must be ensured that this current will
not cause a latch up of the controlled object.
To protect the trip circuit supervision circuits in the IED, the output
contacts are provided with parallel transient voltage suppressors. The
breakdown voltage of these suppressors is 400 +/– 20 V DC.
Timer
The binary input BLOCK can be used to block the function. The activation of the
BLOCK input deactivates the ALARM output and resets the internal timer.

Technical data

Table 92: TCSSCBR Technical data
Function
Operate time delay
TCS
status
Timer
0-t
0
Range or value
(0.020 - 300.000) s
1MRK 505 277-UUS C
ALARM
Accuracy
± 0,5% ± 110 ms
Technical Manual