User's Manual

Geo Direct PWM Amplifier
Power On/Off Procedures 34
POWER ON/OFF PROCEDURES
Caution
Changing the ADC clock on the controller (PMAC) side requires
recycling power on the Geo Direct PWM Drive.
Caution
Main bus power should NEVER be applied if the 24V logic power is
NOT applied.
Caution
Make sure that no motor commands (e.g. phasing, jogging, or open
loop) are being executed by or sent by the controller (PMAC) at the
time of applying main bus power.
 Powering up the Geo Direct PWM Drive must obey the following procedure:
1. Make sure that PMAC is powered up, and that the PWM cable is connected
2. Apply 24V logic power to the Geo Direct PWM Drive
3. Wait a minimum of ~3 seconds
4. Apply main bus power
5. Wait ~ 3seconds before enabling the drive (motor)
 Powering down the Geo Direct PWM Drive must obey the following procedure:
1. Disconnect main bus power
2. Wait a minimum of ~5 seconds
3. Disconnect 24V logic power
Cycling Main Bus Power
Caution
Main bus power should NEVER be applied or cycled if the 24V logic
power is NOT applied.
Cycling main bus power must obey the following warning restrictions. A delay should be inserted in
either software, hardware or both to ensure that these restrictions are conformed.
Caution
Do NOT to cycle main bus power frequently and rapidly within a few
seconds.