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Chapter 3 Paramters/Functions Innovation Series Medium Voltage GP Type - G Drives GEH-6385
Function description
The Speed Reference Reverse function is part of the Speed Reference Generation
function. It reverses the speed reference in response to a user request.
The speed reference input to the Speed Reference Reverse originates in the Local
Speed Reference if Local mode active is True, or in the Remote Speed Reference if
Local mode active is False. The value of Local mode active is selected with the DDI
Remote/Local button.
The user request to reverse the speed reference is reflected in Reverse mode active.
It depends on the value of Local mode active. If Local mode active is True, then
Reverse mode active is set equal to Local rev request, which changes between True
and False as the DDI reverse button is pressed. If Local mode active is False, then
Reverse mode active is set equal to the signal selected by Reverse select.
When Reverse mode active is True, then the speed reference input is multiplied by –1
to obtain the speed reference output (Speed reference).
Related diagrams
• Speed Reference Generation (Ovr_RfSel)