ABB RELION REX640 Technical Manual page 359

1MRS759142 C
REX640
Technical Manual
GUID-700B42B1-7C1B-4FED-9CF5-087904BEE1F1 V1 EN
Figure 200: Effective start value or voltage slope characteristic
To achieve the voltage slope characteristics, Voltage high limit must
always be set to a value greater than Voltage low limit.
If Voltage high limit is lower than Voltage low limit, the voltage step
characteristic is active with Voltage low limit being the cutoff value.
The value of the setting Start value should always be greater than the
setting Start value low. Otherwise, Start value low is used as the
effective start value.
External input control mode
The External input control mode is used to enable voltage control from an external
application. If Control mode is set to the "Input Control" mode, the effective start
value for all phases is influenced by the status of the binary input ENA_LOW_LIM.
If ENA LOW LIM isTRUE
_ _
Effective start value Start value low
=
GUID-8CED6BBB-8CCE-4D04-8B47-7A467EDF47CC V2 EN
If ENA LOW LIM is FALSE
_ _
Effective start value Start value
=
GUID-EAB0CF3B-057C-48F3-B3BA-7D8CFE0D3F24 V2 EN
:
:
Section 4
Protection functions
(Equation 28)
(Equation 29)
353