ABB RED650 - Binary Input Module (BIM); Design; Introduction

22.2.7 Binary input module (BIM)
IP14535-1 v1
22.2.7.1 Introduction
M1769-3 v4
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.
22.2.7.2 Design
M11586-3 v6
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 earth faults, see figure 377 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 505 394-UEN A Section 22
IED hardware
Line differential protection RED650 2.2 IEC 819
Technical manual