ABB RELION 670 Series Technical Manual page 1313

1MRK 502 066-UUS B
22.2.10 Binary input/output module (IOM)
22.2.10.1 Introduction
The binary input/output module is used when only a few input and output channels are needed.
The ten standard output channels are used for trip output or any signaling purpose. The two high
speed signal output channels are used for applications where short operating time is essential.
Eight optically isolated binary inputs cater for required binary input information.
22.2.10.2 Design
The binary input/output module is available in two basic versions, one with unprotected contacts
and one with MOV (Metal Oxide Varistor) protected contacts.
Inputs are designed to allow oxide burn-off from connected contacts, and increase the
disturbance immunity during normal protection trip times. This is achieved with a high peak
inrush current while having a low steady-state current, see figure 650. Inputs are debounced by
software.
Well defined input high and input low voltages ensures normal operation at battery supply ground
faults, see figure 649.
The voltage level of the inputs is selected when ordering.
I/O events are time stamped locally on each module for minimum time deviance and stored by the
event recorder if present.
The binary I/O module, IOM, has eight optically isolated inputs and ten output relays. One of the
outputs has a change-over contact. The nine remaining output contacts are connected in two
groups. One group has five contacts with a common and the other group has four contacts with a
common, to be used as single-output channels, see figure 657.
The binary I/O module also has two high speed output channels where a reed relay is connected in
parallel to the standard output relay.
For configuration of the input and output signals, refer to sections
SMBI" and
Technical manual
"Signal matrix for binary outputs
The making capacity of the reed relays are limited.
"Signal matrix for binary inputs
SMBO".
Section 22
IED hardware
IP15582-1 v1
M6939-3 v6
IP10635-1 v1
M1718-3 v3
M1898-3 v3
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