ABB Relion 670 series, Technical Reference Manual

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19.2.10 Binary output modules (BOM)
19.2.10.1 Introduction
The binary output module has 24 independent output relays and is used for trip output
or any signaling purpose.
19.2.10.2 Design
The binary output module (BOM) has 24 software supervised output relays. Each pair
of relays have a common power source input to the contacts, see figure
522 . This
should be considered when connecting the wiring to the connection terminal on the
back of the IED.
The high closing and carrying current capability allows connection directly to breaker
trip and closing coils. If breaking capability is required to manage fail of the breaker
auxiliary contacts normally breaking the trip coil current, a parallel reinforcement is
required.
For configuration of the output signals, refer to section "Signal matrix for binary
outputs SMBO" .
ANSI_xx00000299.vsd
2
1
3
Output module
ANSI00000299 V1 EN
Figure 522: Relay pair example
1 Output connection from relay 1
2 Output signal power source connection
3 Output connection from relay 2
Section 19
1MRK505222-UUS C
IED hardware
1104
Technical reference manual