Baldor VS1GV21-1B, Installation & Operating Manual

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Troubleshooting 9-9 MN765
Keypad Text Type
Fault
Number
Description
Dyn Brake Desat Fault 36
Dynamic braking current limit exceeded. Check for shorted braking resistor
circuit or for brake resistor with an ohmic value below the allowed limit for the
drive. Check for a short between R1 or R2 and B-.
Encoder Loss Fault 58
Encoder detected but has poor or no signal. Check encoder wiring; verify
shielding, grounding and bonding practices.
Excess Faults/Hr Alarm 79 The allowed number of faults/hour has been exceeded.
External Trip Fault 22
J1-16 is open. Check remote connection on J1-16. Occurs only when external
fault parameter is turned ON.
Fan Loss Alarm 62
Fan circuit is seeing low current or over current. Verify that fan is not blocked
and is connected properly.
Flt Log Mem Fail Fault 28
Problem reading fault log from control board EEPROM, contact Baldor for
service.
Following Error Fault 18
Speed error beyond Set Speed Band parameter. Verify motor is not overloaded;
increase Set Speed Band.
Ground Fault Fault 8
Ground currents in output of control. Due to shorts to ground or excessive
leakage current to ground. Disconnect motor, meg motor for insulation leakage
to ground; check motor leads for shorts to ground; replace motor leads with
lower capacitance cable or shorten leads if possible; consider the usage of load
reactor.
High Line Alarm 102 Power grid voltage too high, check power base rating, check input lines.
IGBT Thermal Fault 94 IGBT thermal overload. Check motor loading. Allow time to cool.
Initial Pos Alarm 70
The initial position reading could not be read or is out of expected range. Check
motor feedback wiring. Verify proper wiring, grounding and bonding.
Internal Config Fault 35 An internal firmware configuration occurred, contact Baldor for service.
Invalid FB Sel Alarm 56
Feedback board not installed in selected slot. Select an Encoder/Resolver
board as feedback source. Verify selection of correct slot for motor feedback.
Invalid Res Sel Alarm 71
The feedback source selected is not a resolver board. If resolver feedback
utilized, ensure installed feedback board is for resolver feedback. Verify
selection of correct slot for motor feedback.
Line Loss Alarm 37 All 3 input phases lost. Check input circuit breaker, fuses or input contacts
Line Regen Fault 34 This fault code is not used. If it occurs, contact Baldor for service
Line Sag Alarm 64
All 3 phase input lines have sagged below 70% of nominal. Check input line
quality; check line impedance; check for excessive loading on power system.
Logic Supply Fault 9
Internal logic power supply has dropped below 24V threshold. Replace Power
Supply.
Low Initial Bus Fault 11
Bus volt below 200/400/500V on 230/460/575V units at power up. Check input
line voltage; check for proper resistor on R1/R2; check for open circuit on TH1-
TH2 Terminals.
Low Line Alarm 101
Power grid voltage too low. Check power base rating; check input connections;
ensure input voltage is within drive specification.
Lower U Gate Fault 40
Transistor #1 failed to fire or misfired. Verify IGBT is not shorted. Verify no
debris has fallen into drive. Check wiring between drive and motor. Verify motor
windings are not shorted.
Lower V Gate Fault 42
Transistor #2 failed to fire or misfired. Verify IGBT is not shorted. Verify no
debris has fallen into drive. Check wiring between drive and motor. Verify motor
windings are not shorted.
Lower W Gate Fault 44
Transistor #3 failed to fire or misfired. Verify IGBT is not shorted. Verify no
debris has fallen into drive. Check wiring between drive and motor. Verify motor
windings are not shorted.
Macro Cmd Failed Fault 93 Macro command execution failure. Verify that macro file is correct.
Macro Cmd Inval Fault 92 Macro command found is invalid. Verify that macro file is correct.
Macro Read Fault 90 Macro record read failed. Recompile file and download to drive again.
Macro Rec Length Fault 91 Macro record length is invalid. Recompile file and download to drive again.
Table 9-1
Fault Messages
Continued