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roubleshooting Flow Chartroubleshooting Flow Chart
roubleshooting Flow Chartroubleshooting Flow Chart
roubleshooting Flow Chart
Drive does not operate normallyDrive does not operate normally
Drive does not operate normallyDrive does not operate normally
Drive does not operate normally
Is input power applied to disconnect?
YES
Are cooling fan(s) operating?
YES
Is the COMM PS light on the Control
Board illuminated?
YES
Is OT (overtemperature) indicated on
the enclosure door?
NO
Is FAULT indicated on the enclosure
door?
NO
With the drive stopped, is the COND
DRIVE light on the Control Board
illuminated and the COMM DRIVE
light dim but flickering?
YES
Give the drive a run command. Is RUN
indicated on the enclosure door?
YES
Is the motor rotating?
YES
Does the motor turn in the proper
direction?
YES
Does the motor accelerate to full speed
under load?
YES
END
NO Apply power
NO Check fan wires
Check for rated line voltage
between terminals L1, L2 and L3 on
terminal block TB3 on the drive
Check fuses F1 and F2 located on
the Power Board or Snubber Board
NO Check fuse F3 located on the Power
Board or Snubber Board
YES See Section 4.9 to help diagnose the
problem
YES See Section 4 to help diagnose the
problem
NO Replace the control board
NO If using auto run input:
1. Press the AUTO button on the enclosure door
2. Check for 115VAC between terminals 3 and 4 on terminal block TB4
If using HAND/OFF run input:
1. Press the HAND button on the enclosure door
2. Check the 50 pin ribbon cable connections
NO Is the motor disconnect switch closed?
Has a speed reference command
been given?
NO Reverse two of the power leads to
the motor
NO For local operation, hold down the
SPEED increase button on the
enclosure door until all 9 squares of
the bar graph are on. (Hold down
for approximately 15 sec)
For remote operation:
1. Check that the external reference
input applied to terminals 1 and 2
on TB4 is at maximum
2. Is the current limit potentiometer
(P7) on the Control Chip Board fully
clockwise?
3. Are the maximum speed, gain
and offset potentiometers (P4, P2
and P1) on the Control Chip Board
at their factory settings?
Does the drive have a constant
speed bypass?
⇐ NO YES
⇓
Does the motor turn in the proper
direction during bypass?
⇐ YES NO
⇓
Reverse two of the input power
leads to the drive
➩
➩
➩
➩
➩
➩
➩
➩
➩
➩
⇓
⇓
⇓
⇓
⇓
⇓
⇓
⇓
⇐
⇓
⇓
➩
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