Analog Channel Configuration - ABB RELION REX640 Technical Manual

1MRS759142 C
4.8.4.4
4.8.4.5
REX640
Technical Manual
In addition, the function can be applied as a power factor controller.
The function contains a blocking functionality. It is possible to block function outputs,
timers or the function itself.

Analog channel configuration

MPUPF has two analog group inputs which must be properly configured.
Table 916: Analog inputs
Input
I3P
U3P
See the preprocessing function blocks in this document for the
possible signal sources.
There are a few special conditions which must be noted with the configuration.
Table 917: Special conditions
Condition
U3P connected to real measurements
Improper analog channel configuration causes a validation error if the analog
channels are not completely configured or they do not match with certain settings. For
troubleshooting, check the contents of this chapter and also the preprocessing blocks
in this document. The configuration can be written to the protection relay once the
mismatch is corrected.
Operation principle
The function can be enabled and disabled with the Operation setting. The
corresponding parameter values are "on" and "off".
The operation of MPUPF can be described using a module diagram. All the modules
in the diagram are explained in the next sections.
Protection functions
Description
Three-phase currents
Three-phase voltages
Description
The function requires that any two voltage
channels are connected.
Section 4
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