Daikin MD5 Operation Manual page 76

Table 53 continued: Fault Listing
Fault Code Fault Name In Panel
16 EARTH FAULT
18 THERM FAIL
19 OPEX LINK
20 OPEX PWR
21 CURR MEAS
22 SUPPLY PHASE
23 ENCODER ERR
24 OVERSPEED
25 RESERVED
26 DRIVE ID
27 CONFIG FILE
28 SERIAL 1 ERR
29 EFB CONFIG FILE
30 FORCE TRIP
31 EFB 1
32 EFB 2
33 EFB 3
34 MOTOR PHASE
35 OUTPUT WIRING
36 INCOMP SWTYPE
37 CB OVERTEMP
OM 1191 • MD5 VFD
Description and Recommended Corrective Action
Possible ground fault detected in the motor or motor cables . The drive monitors for ground faults while the drive is
running and while the drive is not running . Detection is more sensitive when the drive is not running and can produce
false positives .
Possible corrections:
• Check for/correct faults in the input wiring .
• Verify that motor cable does not exceed maximum specified length.
• A delta grounded input power supply and motor cables with high capacitance may result in erroneous error reports
during non-running tests . To disable response to fault monitoring when the drive is not running, use parameter 3023
WIRING FAULT . To disable response to all ground fault monitoring, use parameter 3017 EARTH FAULT .
Internal fault . The thermistor measuring the internal temperature of the drive is open or shorted . Contact your local
Daikin sales representative .
Internal fault. A communication-related problem has been detected on the fiber optic link between the OITF and OINT
boards . Contact your local Daikin sales representative .
Internal fault . Low voltage condition detected on OINT power supply . Contact your local Daikin sales representative .
Internal fault . Current measurement is out of range . Contact your local Daikin sales representative .
Ripple voltage in the DC link is too high . Check for and correct:
• Missing mains phase .
• Blown fuse .
The drive is not detecting a valid encoder signal . Check for and correct:
• Encoder presence and proper connection (reverse wired, loose connection, or short circuit) .
• Voltage logic levels are outside of the specified range.
• A working and properly connected Pulse Encoder Interface Module, OTAC-01 .
Motor speed is greater than 120% of the larger (in magnitude) of 2001 MINIMUM SPEED or 2002 MAXIMUM SPEED .
These are factory set and tested . Contact your local Daikin sales representative if there is a problem .
Check for and correct:
• Adequacy of motor braking torque .
• Applicability of torque control .
• Brake chopper and resistor .
Not used as of the publication of this manual .
Internal fault. Configuration Block Drive ID is not valid. Contact your local Daikin sales representative.
Internal configuration file has an error. Contact your local Daikin sales representative.
Fieldbus communication has timed out . Check for and correct:
• Fault setup (3018 COMM FAULT FUNC and 3019 COMM FAULT TIME) .
• Communication settings (Group 51 or 53 as appropriate) .
• Poor connections and/or noise on line .
Error in reading the configuration file for the embedded fieldbus.
Fault trip forced by the fieldbus. See the fieldbus User's Manual.
Fault code reserved for the embedded fieldbus (EFB) protocol application. These codes are not used as of the
publication of this manual .
Fault in the motor circuit . One of the motor phases is lost . Check for and correct:
• Motor fault .
• Motor cable fault .
• Thermal relay fault (if used) .
• Internal fault .
Possible power wiring error detected . When the drive is not running it monitors for an improper connection between the
drive input power and the drive output . Check for and correct:
• Proper input wiring – line voltageis NOT connected to drive output .
• The fault can be erroneously declared if the input power is a delta grounded system and motor cable capacitance is
large .
The drive cannot use the software .
• Internal Fault .
• The loaded software is not compatible with the drive . • Call support representative .
Drive control board is overheated .
Check for and correct:
• Excessive ambient temperatures
• Fan failure .
• Obstructions in the air flow.
76
d
iagnosTiCs
www .DaikinApplied .com