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Chapter 3 Paramters/Functions Innovation Series Medium Voltage GP Type - G Drives GEH-6385
Failure to rotate configuration and operation
The following parameters configure the Failure to rotate fault.
Parameter Description
Rotate fail flt lvl The level which the speed regulator error must exceed for
the fault condition to exist. RPM
Rotate fail spd lim The level which the speed regulator feedback must remain
below for the fault condition to exist. RPM
Rotate fail delay The time for which the fault condition must persist before
the fault is declared. Seconds
The Failure to rotate fault is declared when the following con ditions persist for
Rotate fail delay.
ABS(Speed reg error) >= Rotate fail flt lvl
ABS(Speed reg fbk) <= Rotate fail spd lim
Loss of spd control configuration and operation
The following parameters configure the Loss of spd control alarm.
Parameter Description
Spd ctl loss flt lvl The level which the speed reg ulator error m ust exceed for
the alarm con dition to exist. RPM
Spd ctl loss delay The time for which the alarm condition must persist before
the alarm is declared. Seconds
The Loss of spd control alarm is declar ed when the following conditi on persists for
Spd ctl loss delay.
ABS(Speed reg error) >= Spd ctl loss flt lvl
In a standard drive config uration the Loss of spd control alarm is cleared when the
following condition is met.
ABS(Speed reg error) < 90% x Spd ctl loss flt lvl
Reverse rotation configuration and operation
The following parameter configures the Reverse rotation fault.
Parameter Description
Rev rotation fault Enables the Reverse rotation fault.
The Reverse rotation fault is decl ared when the detected directi on of Speed reg fbk is
opposite to the commanded direction of rotation. The magnitude of Speed reg fbk
must be greater than Zero speed level for the fault to occur.