ABB Relion 670 Series RES670, Technical Manual

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21.2.7 Binary input module (BIM)
21.2.7.1 Introduction
The binary input module has 16 optically isolated inputs and is available in two versions,
one standard and one with enhanced pulse counting capabilities on the inputs to be used
with the pulse counter function. The binary inputs are freely programmable and can be
used for the input of logical signals to any of the functions. They can also be included in
the disturbance recording and event-recording functions. This enables extensive
monitoring and evaluation of operation of the IED and for all associated electrical circuits.
21.2.7.2 Design
The Binary input module contains 16 optical isolated binary inputs. The voltage level of
the binary input is selected at order.
For configuration of the input signals, refer to section "Signal matrix for binary inputs
SMBI" .
A signal discriminator detects and blocks oscillating signals. When blocked, a hysteresis
function may be set to release the input at a chosen frequency, making it possible to use
the input for pulse counting. The blocking frequency may also be set.
Well defined input high and input low voltages ensure normal operation at battery supply
ground faults, see figure
295 The figure shows the typical operating characteristics of the
binary inputs of the four voltage levels.
The standard version of binary inputs gives an improved capability to withstand
disturbances and should generally be used when pulse counting is not required. Inputs are
debounced by software.
I/O events are time stamped locally on each module for minimum time deviance and
stored by the event recorder if present.
1MRK 511 365-UUS A
Section 21
IED hardware
Phasor measurement unit RES670 2.1 ANSI 767
Technical manual