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Fault Resetting
The MD5 can be configured to automatically reset certain faults.
Refer to parameter
Group 31: Automatic Reset on page
If an external source for start command is selected and it is
active, the MD5 may start immediately after fault reset .
Flashing Red Led
To reset the drive for faults indicated by a flashing red LED:
• Turn off the power for 5 minutes .
Red LED
To reset the drive for faults indicated by a red LED (on, not
flashing), correct the problem and do one of the following:
• From the control panel, press RESET
• Turn off the power for 5 minutes .
Depending on the value of 1604, FAULT RESET SELECT, the
following could also be used to reset the drive:
• Digital input
• Serial communication
When the fault has been corrected, the motor can be started .
Alarm Listing
The following table lists the alarms by code number and describes each .
Table 56: Alarms by Code Numbers
Alarm Code
Display
2001
OVERCURRENT
2002
OVERVOLTAGE
2003
UNDERVOLTAGE
2004
DIR LOCK
2008
PANEL LOSS
2009
DEVICE OVERTEMP
OM 1191 • MD5 VFD
33 .
WARNING
Description
Current limiting controller is active . Check for and correct:
• Excessive motor load .
• Insufficient acceleration time (parameters 2202 ACCELER TIME 1).
• Faulty motor, motor cables or connections .
Over voltage controller is active . Check for and correct:
• Static or transient overvoltages in the input power supply .
• Insufficient deceleration time (parameters 2203 DECELER TIME 1).
Under voltage controller is active . Check for and correct:
• Undervoltage on mains .
The change in direction being attempted is not allowed . Either:
• Do not attempt to change the direction of motor rotation, or
Panel communication is lost and either:
• Drive is in local control mode (the control panel displays HAND or OFF), or
• Drive is in remote control mode (AUTO) and is parameterized to accept start/stop, direction or reference from the
control panel .
To correct check:
• Communication lines and connections
• Parameters in Groups 10 START/STOP/DIR and 11: REFERENCE SELECT (if drive operation is AUTO) .
Drive heatsink is hot . This alarm warns that a DEVICE OVERTEMP fault may be near .
R1...R4 & R7/R8: 100 °C (212 °F) R5/R6: 110 °C (230 °F)
Check for and correct:
• Fan failure .
• Obstructions in the air flow.
• Dirt or dust coating on the heat sink .
• Excessive ambient temperature .
• Excessive motor load .
History
For reference, the last three fault codes are stored into
parameters 0401, 0412, 0413 . For the most recent fault
(identified by parameter 0401), the drive stores additional
data (in parameters 0402...0411) to aid in troubleshooting a
problem . For example, parameter 0404 stores the motor speed
at the time of the fault .
To clear the fault history (all of the Group 04, Fault History
parameters):
1 . Using the control panel in Parameters mode, select
parameter 0401 .
2 . Press EDIT .
3 . Press UP and Down simultaneously .
4 . Press SAVE .
Correcting alarms
The recommended corrective action for alarms is:
• Determine if the Alarm requires any corrective action
(action is not always required) .
• Use Alarm listing below to find and address the root
cause of the problem .
78
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