Current Limit - Parker AC30 Serie Manual Del Producto

D-42
Parameter Reference

Current Limit

Parameters::Motor Control::Current Limit
Designed for all Motor Control Modes
This function allows you to set the maximum level of motor rated current (as a % of the user-set Motor Current) which is allowed to flow before
current limit action occurs. If the measured motor current exceeds the current limit value with a motoring load, the motor speed is reduced to control
the excess load. If the measured motor current exceeds the current limit value with a regenerating load, the motor speed is increased up to a
maximum of 100% Speed in RPM (Scale Setpoint).
The maximum value of current limit for a particular motor is limited by the AC30V current rating.
If a motor of larger rating than the AC30V is connected, then the current limit max value is limited by the AC30V current rating.
If a motor of lower rating than the AC30V is connected, then the current limit max value is limited to 300% (if compatible with the AC30V current
rating) for an induction motor (IM) and to the ratio PMAC Max Current to PMAC Rated Current for a PMAC motor.
% are always expressed as % of the user set Motor Current (rated current of PMAC or IM Motor).
Parameter Name No.
Current Limit 0305
This parameter sets the level of motor current, as a % of Motor Current (refer to the relevant MOTOR definition , PMAC or IM
function) at which the Drive begins to take current limit action.
Regen Limit Enable 0307
This parameter enables or disables regenerative current limit action.
Note that this parameter only works in open-loop VOLTS / Hz motor control mode.
Functional Description
Internal limit : output of the Stack Inv Time module + reduction
as a function of electrical low speed ( < 3Hz ) and as function
of heatsink temperature
Path
Setup::Motor Control::Control and Type
Parameters::Motor Control::Current Limit
Parameters::Motor Control::Current Limit
Current limit
Internal limit
Default Range
150.0 0.0 to 600.0
TRUE
minimum
Units Writable
% ALWAYS
ALWAYS
Current Limit Output
AC30 series Variable Speed Drive