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Troubleshooting 8-5MN792
Table 8-4 Continued
Trip Message and Description Possible Cause
3–Phase Failed
3–phase supply failure
Total failure of supply, or missing phase of 3–phase supply (detected under most
circumstances) – check main AC supply to the control, check high–speed thyristor
protection fuses, check power chassis coding fuses.
Check the main AC voltage of the control (refer to Product Code). This alarm may
not operate properly if the voltage is incorrect, i.e. wrong unit or control.
Phase Lock
Supply frequency is outside the frequency band
limits 45 – 65Hz
Check supply frequency
Synchronization errors caused by distorted supply
5703 RCV Error
Invalid data received via P3 port from another
control
(Alarm only operates when MODE parameter is set to 5703 SLAVE)
STALL TRIP
With motor stationary (AT ZERO SPEED
parameter shows TRUE), current has exceeded
the STALL THRESHOLD parameter value for
longer than the STALL TRIP DELAY parameter
value
(Alarm only operates when the STALL TRIP parameter is enabled).
OVER I TRIP
Current feedback value has exceeded 280% of
rated current
(300% loading not exceeding 15ms or 325% not exceeding 6.6ms is acceptable)
Motor armature windings failure – check insulation resistance
Badly tuned current loop
Faulty control – Contact Baldor
ACCTS FAILED
AC current transformer plug connection to
control power board missing
Check armature current transformer plug for correct installation.
Frame 5 only : Load imbalance between the two parallel power stacks
The trip prevents the contactor closing and the current loop activating without
armature current feedback – important in the case of external stack controllers
where the thyristor stack is remote from the control board.
AUTOTUNE ERROR
Speed feedback has exceeded 20% of rated
speed, or field current feedback has exceeded
6% of rated field current
(Alarm only operates during the Autotune sequence).
AUTOTUNE ABORT
The Autotune sequence has been aborted.
Coast Stop, Program Stop, Enable or Start Run terminal(s) disabled during
Autotune sequence
The AUTOTUNE parameter reset during the Autotune sequence
Autotune sequence has timed–out (approximately 2 minutes).
REMOTE TRIP REM. SEQUENCE parameter Remote Trip flag set to zero.
CONFIG INHIBIT The drive was requested to start in Configuration mode.
CALIB INHIBIT Calibration fault
COMMS FAULT CODE x Operator Station faulty
OP STATION (Keypad) Keypad has been disconnected from control while running in local mode.
0xF100 ERROR CAM FULL INIT
0xFF02 UNIMPLEMENTED OPCODE
0xFF03 ERROR NMI
0xFF04 ERROR TRAP
0xFF05 ERROR PCB VERSION
0xFF06 ERROR PRODUCT CODE
0xFF07 ERROR HSO FULL
These are internal software errors. If these should occur please contact Baldor.
Symbolic Alarm Messages These are generally internal software or hardware errors. If these occur please contact Baldor.
Number Description Action
0xF003 Pre–Ready Fault Coding not present. Replace power board or chassis. (If an external stack,
check coding supply field).
0xF004 Aux Contactor Open The internal auxiliary 3–phase contactor failed to close.
0xF005 External Trip Ext Trip (C2) open circuit.
0xF006 Remote Trip REM. Sequence parameter Remote Trip flag set to zero.
0xFF03 Aux Power Fail Check Aux. Supply and/or Main AC Input