Code Alarm F60 Installation Manual Page 155

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Diagnostics and troubleshooting
S1A53838 09/2011 155
Clearing the detected fault
In the event of a non resettable detected fault:
1 Disconnect all power, including external control power that may be present.
2 Lock all power disconnects in the open position.
3 Wait 15 minutes to allow the DC bus capacitors to discharge (the drive LEDs are not indicators of the absence
of DC bus voltage).
4 Measure the voltage of the DC bus between the PA/+ and PC/– terminals to ensure that the voltage is less
than 42 Vdc.
5 If the DC bus capacitors do not discharge completely, contact your local Schneider Electric representative.
Do not repair or operate the drive.
- Find and correct the detected fault.
- Restore power to the drive to confirm the detected fault has been rectified.
When any overload function (OL1 or OL2) is active, the drive cannot be reset by inputting a reset signal from
an external device or with the Stop key on the display terminal if the calculated cooling time has not expired.
Calculated cooling time:
- OL1: 30 seconds after the detected fault has occurred
- OL2: 120 seconds after the detected fault has occurred
CAUTION
RISK OF DAMAGE TO THE MOTOR
z Repeated reset of the thermal state after a thermal overload can result in thermal stress to the motor.
z When trips occur, promptly inspect the motor and driven equipment for problems (such as a locked shaft or
mechanical overload) before restarting. Also check the power supplied to the motor for abnormal conditions
(such as a phase loss or phase imbalance).
Failure to follow these instructions can result in equipment damage.
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