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D-98
Parameter Reference
Slew Rate
Parameters::Motor Control::Slew Rate
Designed for VOLTS/Hz motor Control Mode.
This function prevents over-current and over-voltage faults occurring due to a rapidly changing setpoint.
PNO
Parameter Descriptions
0360
Slew Rate Enable
Enable/Disable slew rate limit
0361
Slew Rate Accel Limit
Maximum rate at which the setpoint can be changed away from zero
0362
Slew Rate Decel Limit
Maximum rate at which the setpoint can be changed towards zero
Functional Description
The Slew Rate limit obtains the setpoint from the output of the application, correctly scaled by the Reference feature. The rate of change limits
are applied and the setpoint is then passed on for further processing.
When the braking feature determines that the internal dc link voltage is too high it issues a Hold signal. This causes the Slew Rate limit function
to hold the setpoint at its current value. This typically lasts for only 1ms, time for the excess energy to be dumped into the dynamic braking
resistor.
AC30V series Variable Speed Drive
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