Binary Input Threshold Voltage; Threshold Hysteresis; Binary Input Filter Time - ABB RELION REX640 Technical Manual

1MRS759142 F
counter threshold voltage and Input counter threshold hysteresis settings. Oxide-
burn feature cannot be disabled in BIO1002 & BIO1004.
In RTD1002 module wetting current can be adjusted by setting the parameter
Input oxide burn A in Configuration > I/O modules > Slot # > Input filtering. This
parameter is common for all binary inputs in the module.
3.13.1

Binary input threshold voltage

The parameter
binary inputs.
of the inputs. The threshold can be set for every module or slot specifically
depending on the
Table 95: Input threshold voltage parameters
Parameter
Slot specific threshold
Input threshold voltage
3.13.2

Threshold hysteresis

Threshold hysteresis is used to determine the deactivation threshold for the binary
inputs in case of voltage drops in the auxiliary voltage supply. Threshold hysteresis
value determines how low the deactivation voltage is compared to the activation
voltage as a percentage. Hysteresis can be set for every module or slot specifically
depending on the
Table 96: Threshold hysteresis parameters
Parameter
Slot specific hysteresis
Input threshold hysteresis
3.13.3

Binary input filter time

The filter time eliminates debounces and short disturbances on a binary input. The
filter time is set for each binary input of the protection relay.
REX640
Technical Manual
Input threshold voltage is used to set the threshold level of the
Input threshold voltage determines the voltage level for the activation
Slot specific threshold setting.
Values
0=False
1=True
16...176 V
Slot specific hysteresis setting.
Binary inputs always deactivate when the voltage level drops below 14 V.
Values
0=False
1=True
10...50 %
Basic functions
Default
0=False
16 V
Default
0=False
10 %
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