ABB RELION REX640 Technical Manual page 1304

Supervision functions
A
PSM100x.X2:5
PODP1
PSM100x.X2:6
PSM100x.X2:7
PODP1
PSM100x.X2:8
Figure 739: Operating principle of the trip-circuit supervision, single-pole
connection
If TCS is required only in a closed position, the external shunt resistance can be
omitted. When the circuit breaker is in the open position, TCS sees the situation
as a faulty circuit. One way to avoid TCS operation in this situation is to block the
supervision function whenever the circuit breaker is open.
It is also recommended to block the supervision function when the trip output is
active. Otherwise, TCS issues an alarm if the trip remains active over the set TCS
Operate delay time .
Figure 740
static output, this requires using SPO5 or SPO6 output in series of the circuit.
1304
(+)
PSM100x.X2:4
I
TCS
Rext
coil
(-)
shows a double-pole connection of the trip circuit supervision. For the
1MRS759142 F
+
B
BIO1002.X2:14
TCS
SP06
BIO1002.X2:13
coil
-
Technical Manual
Rext
REX640