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Chapter 3 Paramters/Functions Innovation Series Medium Voltage GP Type - G Drives GEH-6385
Function description
The main (MA) contactor can be either be automatically controlled by the sequencer,
or independently controlled by using the parameter, MA close req sel. When
controlled by the sequencer, the contactor is picked up when the drive is powered up
and dropped out only on trip faults. When independently controlled, the contactor
must be picked up before a run is requested. The contactor will also drop out on a
trip fault regardless of the command.
The contactor will also be dropped out (in hardware) when either the Local or
System Fault strings have been opened.
Many drive applications do not require a contactor and should therefore configure
the parameter MA contactor absent correctly for proper operation.
If the contactor has the feedback wired, then the parameter MA contactor fbk should
be enabled and MA pickup time should be set to a reasonable time-out delay for the
contactor that is used.
Related diagrams
• General Sequencing #4 (GenSeq_4)