Daikin MD5 - Correcting Faults

Correcting Faults
The recommended corrective action for faults is:
• Use the Fault listing table below to nd and address the
root cause of the problem.
• Reset the drive. See Fault Resetting on page 78.
Table 55: Fault Listing
Fault Code Fault Name In Panel Description and Recommended Corrective Action
1 OVERCURRENT
Output current is excessive. Check for and correct:
• Excessive motor load.
• Insufcient acceleration time (parameters 2202 ACCELER TIME 1).
• Faulty motor, motor cables or connections.
2 DC OVERVOLT
Intermediate circuit DC voltage is excessive. Check for and correct:
• Static or transient overvoltages in the input power supply.
• Insufcient deceleration time (parameters 2203 DECELER TIME 1).
3 DEV OVERTEMP
Drive heatsink is overheated. Temperature is at or above limit.
R1…R4 & R7/R8: 115 °C (239 °F) R5/R6: 125 °C (257 °F)
Check for and correct:
• Fan failure.
• Obstructions in the air ow.
• Dirt or dust coating on the heat sink.
• Excessive ambient temperature.
• Excessive motor load.
4 SHORT CIRC
Fault current. Check for and correct:
• A short-circuit in the motor cable(s) or motor.
• Supply disturbances.
5 RESERVED Not used.
6 DC UNDERVOLT
Intermediate circuit DC voltage is not sufcient. Check for and correct:
• Missing phase in the input power supply.
• Blown fuse.
• Undervoltage on mains.
9 MOT TEMP
Motor is too hot, based on either the drive’s estimate or on temperature feedback.
• Check for overloaded motor.
• Adjust the parameters used for the estimate (3005…3009).
10 PANEL LOSS
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
• Parameter 3002 PANEL COMM ERROR.
• Parameters in Group 10: START/STOP/DIR and Group 11: REFERENCE SELECT (if drive operation is AUTO).
11 ID RUN FAIL
The motor ID run was not completed successfully. Check for and correct:
• Motor connections
• Motor parameters 9905…9909
12 MOTOR STALL
Motor or process stall. Motor is operating in the stall region. Check for and correct:
• Excessive load.
• Insufcient motor power.
14 EXTERNAL FLT 1 Digital input dened to report rst external fault is active. See parameter 3003 EXTERNAL FAULT 1.
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