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DMM Technology Corp.
DYN4 AC Servo Drive Instruction Manual
REV. ZM7-A10A
CT1
■ Servo Disable / Enable Timing
When using the ENA signal to disable the servo drive to coast servo motor, do not cycle this input rapidly
ON/OFF. If the signal is cycled too fast, the servo drive will not have enough time to initialize the control
program during Enable and can cause unwanted or dangerous results. Ensure that in the control program,
the below timing is satisfied. Once Disabled, do not Enable the servo drive during motor coast or any time
motor shaft is rotating, make sure motor rotation has completely stopped before Enable again.
ENA
Command Reference Input
Pulse / Analog
ON
OFF
HIGH
LOW
20ms
Servo Enabled
Servo Disabled
By factory default, the Enable logic is Active High. Servo drive is Enabled when powered up, without any
input.
Enable logic can be toggled in the DMMDRV program to Active Low if desired:
