Under Voltage Handling - JVL MAC050 User Manual

2.9
2.9.1 Undervoltage handling
The MAC motor offers the possibility to define the behaviour during and after the mains-
voltage disappear. This situation could for example be during an emergency stop which
causes the mains supply to be cut while the control voltage is still applied to the motor.
3 options exist:
2.9.2 Undervoltage -> Set error bit
Default = Off.
If this option is selected an under voltage will be handled like an error situation and the
corresponding error bit will be set. The motor is stopped using the "error deceleration'
before the motor is switched to passive mode, like any other error situation.
When the main power is re-applied the motor will stay in passive mode and report and
under voltage error. To get the motor back in normal operation the error must be
cleared and a operation mode must be selected.
If this function is activated it will have first priority and the error deceleration will be used
compared to the 2 other options "Undervoltage -> Stop controlled and go to passive"
and "Undervoltage -> Set velocity to 0" which both uses normal deceleration.
2.9.3 Undervoltage -> Stop controlled and go to passive
Default = Off
This option makes the motor decelerating according to the normal acceleration param-
eter and go to passive mode when the mains power is removed. When main power is
re-applied the motor stay in passive mode. To get the motor back in normal operation
an operation mode must be selected.
2.9.4 Undervoltage -> Set velocity to 0
Default = Off.
This option simply just set the velocity to 0 causing the motor to decelerate and stay sta-
tionary (except in "torque direct mode") when mains power is removed. The velocity
setting will stay at 0 also after the main power is re-applied. A velocity value (>0RPM)
must be written into the velocity register to get the motor moving again.
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Under Voltage Handling

JVL A/S - User Manual - Integrated Servo Motors MAC050 - 4500
Undervoltage Handling
Use these fields to define
the behaviour of the motor
when mains power disappear.
TT1130-01GB