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ACCELLIS C70
BLOWER MOTOR CONTROLLER FAULT CODES & TROUBLESHOOTING
NOTE: If no fault condition exists, the LED will be green. If a fault condition exists, the LED will flash red when
a local keypad is not connected. All faults can be reset by cycling the reset control input, pressing
the stop key, or cycling power, except as noted in the Corrective Action column below.
# of
LED
Fault
Flashes
Description
2
Control Input
2
Function Loss
3
Under Voltage
4
Over Voltage
5
Drive Overload
5
Motor Overload
6
Over Temperature
7
Over Current
(300%)
8
Bad Keypad
Connection
9
Negative Slope
Fault Cause
Illegal control input sequence
D
Start attempt while STOP
D
(function loss) input is off
Low input line
D
Temporary loss of input line
D
High input line
D
Decel time too fast
D
Overhauling load
D
Excessive driven load
D
Excessive driven load
D
Operating environment is too hot
D
Fan is blocked or not operating
D
Excessive driven load
D
Shaft rotation blocked
D
Excessive driven load
D
Output wiring is incorrect or shorted
D
Bad connection from keypad to
D
drive
Conflicting parameter values
D
5---5
Corrective Action
3-wire: Verify Start and Jog inputs
D
are not both ON
2-wire: Veify that only one input
D
(Forward, Reverse, or Jog) is ON
Verify STOP (function loss) input
D
is ON before attempting to start
drive.
Check input line to verify voltage
D
is within operating specifications
Check input line to verify voltage
D
is within operating specifications
Increase decel time
D
Reduce the load
D
Verify P---02 is set correctly
D
Reduce the load
D
Verify the ambient temperature is
D
<50_
Verify clearance above/below drive
D
Check for fan obstruction. Re-
D
place if necessary
Reduce the carrier frequency (P-64)
D
Reduce the load
D
Check for obstructions to shaft
D
rotation or reduce excessive load
Increase accel/decel time
D
Verify output wiring is correct
D
Verify keypad is properly con-
D
nected to drive
Adjust values of parameters P-50
D
through P-54
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