18
Owner's Manual
Drivecon Toll Free Ph: 1-800-374-8266
Drivecon reserves the right to alter or amend the above information without notice
Fault code Possible cause Checking
F 50
Reference value
fault
Analog input signal is out of
selected range 1-9V or 2-10V
− control cable is broken
− signal source has failed
Check
− reference cable
− reference source
F 53
Profibus
communication
error
Watchdog time out in Profibus
communication. Effective only if
control through Profibus is selected.
Poor Profibus cable connection or
communication problems with
Profibus master.
Reset: switch power off and restart after the
lamps of keypad are off.
Check:
− Profibus slave address
− Profibus cable connection
− Profibus termination resistor settings
F 55
Board Fault
Some of following board is missing:
− A = Basic I/O board
− B = Thermistor board
− C = SSU (in closed loop and
hoisting applications)
Reset: switch power off and restart after the
lamps of keypad are off.
Check
− board slots A, B and C
− drive selection
− control mode
F 56
Generator side
current limit
Open loop frequency control only.
Too short deceleration time or open
loop generator side current limit is
too low.
Reset has an additional 5 s time delay.
Check:
− deceleration time
− current limit setting
F 57
Thermistor fault
Thermistor input in relay / thermistor
board has detected motor
overtemperature. Fault appears
when thermistor input has been
open over 1s.
Check:
− motor cooling and loading
−
thermistor connection. If expansion board
thermistor input is not used, it should be
shorted
− motor parameters
−
the brake operation
F 60
Parameter fault
Inverter has lost parameters. Drive
selection parameter has changed to
0 / none.
Download parameters from keypad
F 61
Overspeed Fault
SSU has tripped to Overspeed
(hardware supervision). Motor
speed has increased above
overspeed detection level.
Resets when 1s without pulses from pulse
sensor/encoder to SSU and controller is at
zero position.
Check:
− function and cabling
−
maximum frequency setting parameters
− SSU settings
F 62
Speed Difference
Fault
SSU has tripped to Speed
Difference
Resets when 1s without pulses from pulse
sensor/encoder to SSU and controller is at
zero position.
Check:
− pulse sensor/encoder function and cabling
− pulse sensor/encoder pulse number
− speed difference supervision settings
F 63
Stall Supervision
Fault
SSU has tripped to Stall Resets when 1s without pulses from pulse
sensor/encoder to SSU and controller is at
zero position.
Check:
− brake operation
− pulse sensor/encoder function and cabling
− stall supervision settings
F 64
SSU Relay Test
Fault
Relay in SSU board is damaged,
SSU relay is bypassed or OK input
is damaged.
Reset: switch power off and restart after the
lamps of keypad are off.
Check:
− ES and RDY external connections
− OK input operation
− change SSU board
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