52
MSD Multi-Axis System Operation Manual DC-AC Servo Drive
moog
Id. no.: CA97554-001 0
5
/2017
4.14.2 Switching in the motor cable
CAUTION
!
Damage to the device due to switching in the motor cable!
•
Carelessness can cause damage to the device
Motor cable switching must take place with the power switched off and the power stage disabled,
as otherwise problems such as burnt contactor contacts or
damage to the power stage may occur.
To ensure unpowered switch-on, you must make sure that the contacts on the motor
contactor are closed before the DC-AC Servo Drive power stage is enabled. At the
moment when the contactor is switched off it is necessary for the contact to remain
closed until the DC-AC Servo Drive's power stage is shut down and the motor current
is 0. This is achieved by using appropriate safety delays for the switching of the motor
contactor in the control sequence for your machine.
Despite these measures, the possibility cannot be ruled out that the DC-AC Servo Drive
may malfunction during switching in the motor cable.
4 Electrical installation
