Danfoss VLT AQUA Drive FC-202P3K7S2 [20/40] If the drive does not restart after an alarm reset

Danfoss VLT AQUA Drive FC-202P5K5S2 [20/40] If the drive does not restart after an alarm reset
5
Trip-locked alarm (red Alarm LED blinks, alarm cannot be reset, and „Trip-lock“ is displayed on the
control panel (if present))
Trip-lock is an additional protective function of the VLT® AQUA Drive and can only be cancelled by
disconnecting mains power to the unit. If the unit has an external 24 V DC supply (D option), it is only necessary
to disconnect the unit from the mains supply voltage. In this case, the control card remains active (for example,
to support fieldbus communication).
The alarm can be reset again as previously described after the VLT® AQUA Drive FC 200 has been switched o
and on.
If the display still shows a trip-lock after the unit has been switched off (before the alarm is reset), the unit may
have an internal fault. Contact your Danfoss Service provider in this case.
5.2 If the drive does not restart after an alarm reset
An alarm is still displayed Setting
1. Is the alarm trip-locked? See description in Section 5.1.
2. Has the cause of the alarm been remedied, or is the alarm
displayed again immediately after it is reset?
View the alarm numbers in the fault/alarm log and use them to
determine the cause of the alarm.
3. Is the LCP [Reset] button enabled? See parameter 0-43
An alarm is no longer displayed Setting
1. Is the LCP [O] button enabled? Press the [Auto-On] button to restart.
2. Is a start signal present on the digital input or bus interface? Check whether a start signal is present on the digital input or the
bus.
3. Is a reference value available on an analogue or digital input or
the bus interface?
Check the reference value.
4. Is there an open circuit between the frequency converter output
and the motor?
Check the motor wiring. Is a contactor or motor switch present?

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