Design - ABB Relion 650 Series Technical Manual

1MRK 511 424-UEN B
16.2.6.2
Bay control REC650 2.2 IEC
Technical manual

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
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
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.
292 The figure shows the typical operating
Section 16
IED hardware
"Signal matrix for binary
M11586-3 v6
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