10-3 Trips & Fault Finding
AC30V series Variable Speed Drive
9
Only for PMAC Motor: A prolonged load condition, exceeding the motor rated current, has caused the trip. The
estimated motor load has reached a value of 105%
10
The motor is drawing too much current (>100%) at zero output frequency:
• FIXED BOOST level set too high
11
Drive heatsink temperature too high
• The ambient air temperature is too high
• Poor ventilation or spacing between drives
•
Check heatsink fan is rotating
12
Processor temperature or ambient temperature within the power stage too high
• The ambient temperature in the drive is too high
13
The motor temperature is too high, (required IO Option card)
• Excessive load
• Motor voltage rating incorrect
• FIXED BOOST level set too high
• Prolonged operation of the motor at low speed without forced cooling
• Break in motor thermistor connection
14
The external (application) trip input is high:
• Refer to the application description to identify the source of the signal
15
External dynamic brake resistor has been overloaded:
• The external dynamic brake has developed a short circuit.
• Wiring fault
16
External dynamic brake resistor has been overloaded:
• Trying to decelerate a large inertia too quickly or too often
17
Internal dynamic braking switch has been overloaded:
• Trying to decelerate a large inertia too quickly or too often
18
Keypad has been disconnected from drive whilst drive is running in Local Control:
• GKP accidentally disconnected from drive
19
Lost option communications:
• A break in option communications has been detected. Refer to option communications manual.
20
DC Link failed to reach the undervoltage trip level within the contactor feedback time.
• The Line contactor failed to connect.
•
Missing 3-phase line supply
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