Parker 890CS - CURRENT LIMIT

Programming
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D Page D-19
8
9
10
11
A
B
C
D
1
2
3
4
5
6
7
E
CURRENT LIMIT
SETUP::MOTOR CONTROL::CURRENT LIMIT
Designed for all Motor Control Modes.
This function block 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 shed 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 MAX SPEED (REFERENCE function
block).
Note The maximum value of current limit for a particular motor is limited by the 890 current rating. If a motor of larger
rating than the 890+ is connected, then the current limit applies to the 890 and not the motor. In this case, the
maximum value of the CURRENT LIMIT parameter is 150.00%.
Parameter Descriptions
CURRENT LIMIT
PREF: 82.01 Default: 150.00 % Range: 0.00 to 300.00 %
This parameter sets the level of motor current, as a % of MOTOR CURRENT (refer to the MOTOR DATA function block) at
which the Drive begins to take current limit action.
REGEN LIM ENABLE
PREF: 82.02 Default: TRUE Range: FALSE / TRUE
This parameter enables or disables regenerative current limit action.
Note that this parameter only works in open-loop VOLTS / Hz motor control mode.