Master does not exchange any cyclic data
Field bus cable not correctly connected
Bad transmission performance
than watchdog time
F4012 Incorrect I/O length
Different length for input data or output data than
drive expects in P-0-4071, Field bus: length of
cyclic command value data channel and
P-0-4082, Field bus: length of cyclic actual value
data channel was configured in master
Supported by Firmware Variant:
Communication via the field bus has failed. After the field bus had been
initialized and put into operation, the field bus watchdog reacted, i.e. not
telegram was received within the monitoring time stored in P-0-4075,
Field bus: watchdog.
Check master status
Check connection of field bus cable
Check terminating resistors
Check watchdog time parameterized in P-0-4075, Field
bus: watchdog and field bus connector, as well as
F4009 – Attributes
The master tries to establish communication with an I/O length that does
not correspond to the I/O length parameterized in the drive.
– Check parameter set in drive
– Adjust master configuration
F4012 – Attributes
Overcurrent at constant speed
Overcurrent during accelera-
Overcurrent during decelera-
Overvoltage at constant speed
Overvoltage during accelera-
Overvoltage during decelera-
Undervoltage during run
Surge current or short circuit
Input phase loss
11 OPH.L Output phase loss
Soft start error
Converter over temperature
Command value lost
Motor over temperature
Motor parameter tuning error
Synchronous motor angle de-
encoder connection error
Speed control loop error
Bosch Rexroth AG R912005518_Edition 16
Output current above limit at motor running at con-
Output current above limit at motor accelerating
Output current above limit at motor decelerating
DC bus voltage above limit at motor running at con-
DC bus voltage above limit at motor accelerating
DC bus voltage above limit at motor decelerating
DC bus voltage below limit at converter running
Output current sharp increase or short circuit occurs
on motor cable or converter power module has internal
Mains cable disconnected or input imbalance occurs
Motor cable disconnected or output imbalance occurs
Soft start circuit is not working properly
Converter load is above limit for too long
Converter temperature is too high
Converter fan is not working properly
PID feedback is excessively low when converter run-
ning at output frequency high limit
Command value from panel is lost
STO function is activated correctly in running mode,
after re-energized input channels and reset the device,
the device goes to normal state
STO function is activated incorrectly, it happens if one
channel is energized but the other is deenergized
Motor load is above limit for too long
Motor temperature is above limit for too long
Error occurs during motor parameter auto-tuning
Error occurs during synchronous motor angle detec-
error occures during encoder connection
Rexroth Frequency Converter VFC
3610 / VFC 5610
EFC 3610 / EFC 5610
Overcurrent during acceleration Output current above limit at motor accelerating
Overcurrent during deceleration Output current above limit at motor decelerating
Overvoltage during acceleration DC bus voltage above limit at motor accelerating
Overvoltage during deceleration DC bus voltage above limit at motor decelerating
Overvoltage during stop
10 IPH.L Input phase loss
Analog input broken wire detec-
DC_IN power supply error
Forward running lock error
Reverse running lock error
Terminal error signal
Firmware version mismatch
Modbus communication error
Output current above limit at motor running at constant
DC bus voltage above limit at motor running at constant
DC bus voltage above limit at converter stopped
Output current sharp increase or short circuit occurs on
PID feedback is excessively low when converter running
Error occurs during synchronous motor angle detection
Analog input wire is disconnected
Direction can only be forward but command is reverse
Direction can only be reverse but command is forward
Error signal is received from digital inputs
Firmware version of panel or extension card does not
match that of control board
Modbus communication is not working properly