MOT OR DRIVE ALARMS 147
8.1.11.16 DRIVE TRIP MESSA GE / Cannot autotune
During autotune the drive turns off the field to prevent shaft rotation. An " autotune error " will be triggered by
speed feedback being > 20 % of rated speed or field current feedback being > 5 % of rated field current
during the autotune activity.
Note. Speed feedback being > 20% may be caused by residual field magnetisation resulting in shaft rotation.
If so, retry the Autotune with the motor shaft mechanically locked.
8.1.11.17 DRIVE TRIP MESS A GE / Autotune quit
The controller will quit the autotune function if the coast stop, start or run terminals are disabled (taken lo w)
Alternatively, if the autotune EN ABLE/DIS ABLE is instructed to be DIS ABLED during its autotune sequence
then this message will appear. See 6.8.9 CURRENT C ONTROL / Autotune enable PIN 92.
A time-out ( approx. 2 mins) will also cause an autotune quit.
8.1.11.18 DRIVE TRIP MESS A GE / Contactor lock out
This alarm may be caused by t wo possible events at the commencement of a running mode request. It is
accompanied by automatic inhibiting of the current loop followed by de-energisation of the contactor.
1) If the incoming 3 phase supply is of insufficient quality to allow the synchronisation circuit to measure its
frequency and/or phase rotation. It may be due to an intermittant or missing phase on EL1/2/3.
2) The ZERO REFEREN CE interlock function has been enabled and the operator has failed to reset the
external speed references to zero. See 6.10 CHA NGE PARA METERS / ZERO INTERLO CKS.
8.1.11.19 DRIVE TRIP MESS A GE / Warning flags
Note. The follo wing alarms are also available on hidden PINs after the normal delay time irrespective of
whether they are enabled to trip the drive or not. These flags are reset by a start or jog command.
700)STALL W ARNING 701)REF X C W ARNIN G
702)THERMISTOR W ARN 703)SPD FBK W ARN
There is also one further active flag 7 04)I LOOP OFF W ARN on a hidden PIN w hich goes low as soon as the
current loop stops making current under the following fault conditions.
8.1.11.1 DRIVE TRIP MESSA GE / Armature overcurrent
8.1.11.11 DRIVE TRIP MESSAGE / Supply phase loss (Control supply or EL1/2/3 supply)
8.1.11.12 DRIVE TRIP MESSAGE / Synchronization loss
The drive needs to be started (T 33/T 32) and the RUN enabled (T 31) for 704 to function. This is because it is
operating within the current control soft w are and therefore it will not change at all with the drive stopped or
the current loop quenched by RUN (T31) being low.
MO TOR DRIVE ALARMS 2
DRIVE TRIP MESS A GE 3
DRIVE TRIP MESS A GE 3
C A NNO T AUTO TUNE
MO TOR DRIVE ALARMS 2
DRIVE TRIP MESS A GE 3
DRIVE TRIP MESS A GE 3
A UTOTUNE QUIT
MO TOR DRIVE ALARMS 2
DRIVE TRIP MESS A GE 3
DRIVE TRIP MESS A GE 3
CONT A CTOR LO CK OUT
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