ABB RELION REX640 Technical Manual page 1309

1MRS759142 F
Using power output contacts without trip circuit supervision
In case of mechanical outputs, if TCS is not used, the internal current drain
(PSM100x.X2:4, PSM100x.X2:9 and PSM100x.X2:14 in PODP1, PODP2 and PODP2
outputs, respectively) can be left unconnected. The output can then be used as a
normal power output.
Incorrect connections and use of trip circuit supervision
Although the TCS circuit in the PODP1, PODP2 and PODP2 outputs consists of two
separate contacts, it must be noted that those are designed to be used as series
connected to guarantee the breaking capacity given in the technical manual of the
protection relay.
the contacts is used.
Figure 743: Incorrect connection of trip-circuit supervision
6.1.6 Signals
6.1.6.1 TCSSCBR Input signals
Table 1239: TCSSCBR Input signals
Name
TCS_STATE
BLOCK
6.1.6.2 TCSSCBR Output signals
Table 1240: TCSSCBR Output signals
Name
ALARM
REX640
Technical Manual
Figure 743
shows incorrect usage of a TCS circuit when only one of
(+)
R R
int int
TCS TCS
R R
ext ext
Trip
coil
(-)
Type
BOOLEAN
BOOLEAN
(+)
Relay
CB operating
mechanism
(-)
Default
0=False
0=False
Type
BOOLEAN
Supervision functions
Relay
R R
int int
TCS TCS
R R
ext ext
CB operating
mechanism
Trip
coil
Description
Trip circuit supervi-
sion status
Block input status
Description
Alarm output
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