ERROR TYPE 1276 See below
Indicates the cause of an autotune error condition.
0 : NO ERROR
1 : OVER SPEED
2 : FIELD ERROR
3 : PULSE WIDTH
4 : OVER CURRENT
5 : TIMEOUT
6 : AUTOTUNE ABORTED
7 : FIRING ANGLE
8 : PEAK/AVER. RATIO
9 : UNBALANCED BRID.
10 : NULL AVERAGE CUR
11 : THYRISTOR OFF (missing pulse)
Functional Description
OVER SPEED Motor speed detected at greater than 20% during autotune.
FIELD ERROR Armature Autotune:
For a field-off armature autotune, it means that the field current was measured at greater than 6% of the calibration value (which,
if the field is calibrated to a low current, can be a very low threshold).
For a field-on armature autotune, it means that the field was not up to current when expected during the autotune process.
Field Autotune: Field volts found to be less than 10% for 50% of rated field current flowing, or Field current measured at > 105%
of rated during autotune.
PULSE WIDTH Less than 12 pulses have been measured during the autotune that meeting the pulse width angle tolerance requirements – likely
unstable/unbalanced supply or motor shaft moving.
OVER CURRENT Equivalent discontinuous armature current level measured at greater than 200% of either the stack rating or ARMATURE
CURRENT setting;
TIMEOUT Various timeouts.
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