Table 6-1. Amplifier Faults, Causes, And Solutions - Aerotech SOLOIST Hardware Manual

Troubleshooting
6-2
Table 6-1. Amplifier Faults, Causes, and Solutions
Symptom
Motor rotates
uncontrollably
Brushless motor will not
rotate.
Amplifier faults (" ENB"
LED turns red) when motor
decelerates.
Amplifier Faults ("ENB"
LED turns red).
Soloist Hardware Manual
Possible Cause and Solution
Encoder (sine and cosine) signals are improperly
connected. See Section 2.8. for motor phasing
information.
Motor phases A, B, and C connected incorrectly relative
to Hall A, Hall B, and Hall C inputs. See Section 2.8. for
motor phasing information.
Bus over-voltage detected (Soloist10/20). This condition
indicates an excessive bus supply regeneration condition.
The Soloist10/20 requires that a shunt regulator option
be mounted in the unit.
1. RMS current exceeded - run at lower current.
2. Over temperature condition - Remove power and let
the drive cool down, and/or provide better ventilation.
3. Defective on board power supply - Return for repair.
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