R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
! : (937) 328-5100
FAX: (937) 325-5319
24/31
R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.
Fault code Possible cause Checking
F 24
Changed data
warning
Changes may have occurred in the
different counter data due to mains
interruption
No special actions required. Take a critical attitude to
the counter data.
F 25
Microprocessor
watchdog-fault
− interference fault
− component failure (control unit)
If the fault comes again, contact authorized service.
F 26
Power Unit Fault
F 32
Fan cooling fault
Cooling fan of the frequency converter
do not work, when ON command has
been given
If the fault comes again, contact authorized service.
F 35
Application fault
Run-time exception in the application
program
Contact authorized service.
F 36
Control Unit
Faulty Control Unit. Contact authorized service.
F 37
Device changed
Option board changed. Different power
rating of drive
Reset the fault.
F 38
Device added
Option board added. Drive of different
power rating added
Reset the fault.
F 39
Device removed
Option board removed. Drive removed Reset the fault.
F 40
Device unknown
Unknown option board or drive. Check board and drive type.
F 41
IGBT temperature
Too high temperature in IGBT
transistors.
− long duration overload
− lowered cooling
− high environment temperature
Reset: switch power off and restart after the lamps of
keypad are off.
Check:
motor loading
− brake operation
− inverter heatsink
− inverter cooling fan operation
− environment temperature
F 43
Encoder failure
Encoder failure.
− Code1 = EA+/- is missing
− Code2 = EB+/- is missing
− Code3 = Both EA+/- and EB+/- are
missing
− Code4 = EA+ and EB+ are
crossconnected
Check:
− encoder cabling
− brake opening
− encoder mechanical assembly
− encoder type and pulse number
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 51
Stop limit
Stop limit has tripped Reset: keep controller at zero >300ms.
Ensure that fault disappears after leaving the stop limit.
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
(11 paginas)
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