Capacitors
The DC link of the drive contains several electrolytic capacitors. Operating time, load,
and surrounding air temperature have an effect on the life of the capacitors. Capacitor
life can be extended by decreasing the surrounding air temperature.
Capacitor failure is usually followed by damage to the unit and an input cable fuse failure,
or a fault trip. If you think that any capacitors in the drive have failed, contact ABB.
￭ Reforming the capacitors
The capacitors must be reformed if the drive has not been powered (either in storage
or unused) for a year or more. The manufacturing date is on the type designation label.
For information on reforming the capacitors, see Capacitor reforming instructions
(3BFE64059629 [English]) in the ABB Library (https://library.abb.com/en).
Control panel
See ACS-AP-I, -S, -W and ACH-AP-H, -W assistant control panels user’s manual
(3AUA0000085685 [English]).
LEDs
￭ Drive LEDs
There is a green POWER and a red FAULT LED on the front of the drive. They are
visible through the panel cover but invisible if a control panel is attached to the drive.
The table below describes the drive LED indications.
Drive LEDs POWER and FAULT, on the front of the drive, under the control panel / panel
cover
If a control panel is attached to the drive, switch to remote control (otherwise a fault will
be generated), and then remove the panel to be able to see the LEDs
LED blinkingLED lit and steadyLEDs
off
Blinking:
Drive in an alarm state
Green
(POWER)
Power supply on the board OKGreen
(POWER)
No
power
Blinking for one second:
Drive selected on the control
panel when multiple drives are
connected to the same panel
bus.
Active fault in the drive. To reset
the fault, switch off the drive
power.
Red
(FAULT)
Active fault in the drive. To reset
the fault, press RESET from the
control panel or switch off the
drive power.
Red
(FAULT)
Maintenance 227
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