36 Error and warning messages
36.1 Error messages
Errors that occur are displayed as a coded error number in the LED-display on the front panel, and in the
"STATUS" screen page. All error messages result in the BTB/RTO contact being opened and the output stage
of the amplifier being switched off (the motor loses all torque). The motor-holding brake is activated. Errors that
are recognized by the mains supply monitoring are only reported after the servo amplifier has been enabled.
Number Designation Explanation
F01*
heat sink temperature
heat sink temperature is too high,
the limit is set by the manufacturer to 80°C
F02*
overvoltage
overvoltage in the DC-link circuit,
the limit depends on the mains supply voltage
F03*
following error message from the position controller
F04
feedback cable break, short-circuit, short to ground
F05*
undervoltage
undervoltage in DC-link,
the limit is set by the manufacturer to 100V
F06
motor temperature
temperature sensor faulty or motor temperature too high,
the limit is set by the manufacturer to 145°C
F07
v_fault (int.supply) internal aux. voltage not OK
F08*
overspeed motor running away, the speed is higher than permitted
F09
EEPROM checksum error
F10
Flash-EPROM checksum error
F11
brake cable break, short-circuit, short to ground
F12
motor phase motor phase missing (cable break or similar)
F13*
internal temperature internal temperature too high
F14
output stage fault in the power output stage
F15
I²t max. I²t max. value exceeded
F16*
mains BTB/RTO 2 or 3 supply phases missing
F17
A/D converter error in the analog-digital conversion
F18
regen regen circuit faulty or incorrect setting
F19*
mains phase
a supply phase is missing
(can be switched off for 2-phase operation)
F20
Slot error Hardware error on the expansion card
F21
Handling error Software error on the expansion card
F22
Short circuit to earth 40/70 amps types only: Short circuit to earth
F23
CAN bus off CAN bus total communication error
F24
Warning Warning display as error
F25
Commutation error Commutation error
F26
Limit switch Homing error (Hardware limit switch reached)
F27
AS-Option Operating error for AS-option
F28
reserved reserved
F29
Sercos Sercos error
F30
Emerg. Stop Timeout Emerg. Stop Timeout
F31
wrong Firmware-version wrong Firmware Version
F32
system fault system software not responding correctly
* = These error messages can be canceled by the ASCII command CLRFAULT, without making a reset. If only
these errors are present, and the RESET button or the I/O-function RESET is used, the CLRFAULT command
is also all that is carried out.
Setup Software 93
BECKHOFF 07/03 Error and warning messages
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