Setting functions
8.5 Motor control
Converter with control units CU250D-2
Operating Instructions, 04/2014, FW V4.7, A5E34261542B AA
139
5. Accelerate the motor to the maximum speed with maximum load and check as to whether
the motor follows the setpoint.
6. If, when accelerating, the motor stalls, increase the voltage boost p1311 until the motor
accelerates to the maximum speed without any problems.
To achieve satisfactory motor behavior, you must increase the parameter p1312 only in
applications with a significant breakaway torque.
You will find more information about this function in the parameter list and in function
diagram 6300 of the List Manual.
You have set the voltage boost.
p1310
(factory setting 50%)
Compensates voltage drops as a result of long motor cables and the ohmic losses in
p1311
Voltage boost when accelerating
(factory setting 0%)
Provides additional torque when the motor accelerates.
p1312
Voltage boost when starting
(factory setting 0%)
Provides additional torque, however, only when the motor accelerates for the first time
after it has been switched on ("break loose torque").
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