ADDITIONAL SPECIFICATIONS
IPA Hardware Installation Guide 87
Under-Voltage Protection
The unit’s under voltage protection circuit monitors AC input voltage. If the voltage falls below a specific value
while the IPA is operating, the unit issues an under-voltage fault and turns off power to the motor output terminals
(Output Power connector). This allows the motor to freewheel to a stop.
Warning: When an under-voltage protection fault occurs, the IPA disables
power to its motor output terminals on the Output Power
connector. This cuts all control to the motor and allows the load
to freewheel to a stop.
Threshold Voltage
Voltage below 70 VAC trips fault*
Power to motor is turned off
Drive status word is updated via Ethernet to the PC
(See the table “LED Under-Voltage Fault”)
*Custom firmware may be used to lower this, such as for the MX80L. Contact your Parker ATC for customs.
LED Under-Voltage Fault
Resetting the fault
To clear the latched fault, choose one of the following methods:
Cycle power to the drive/controller.
–or–
Open ACR-View and issue the DRIVE RES AXIS0 command to the IPA.
Over-Voltage Protection
The IPA over-voltage circuit protects the drive from excessive regeneration. If the voltage on the motor output
terminals rises above the threshold voltage, the drive/controller issues an over-voltage fault and turns off power to
the motor output terminals (Output Power connector). This allows the motor to freewheel to a stop.
Warning: When an over-voltage protection fault occurs, the IPA disables
power to its motor output terminals on the Output Power
connector. This cuts all control to the motor and allows the load
to freewheel.
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