Error 41 (Dir2): Reverse Running Lock Error; Error 42 (E-St): Terminal Error Signal; Error 43 (Ffe-): Firmware Version Mismatch; Error 44 (Rs-): Modbus Communication Error - Bosch rexroth EFC 610 Series Operating Instructions Manual

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Diagnosis

13.4.24 Error 41 (dir2): Reverse Running Lock Error

Possible reason
Direction control [E0.17] = '2: Reverse
only'
Direction command is forward

13.4.25 Error 42 (E-St): Terminal Error Signal

Possible reason
External error caused by input signals via
external terminals
Wrong wiring / setting of multi-function
external terminals
Converter stop caused by E-Stop active
command via Modbus communication

13.4.26 Error 43 (FFE-): Firmware Version Mismatch

Possible reason
Operating panel may be placed to the fre-
quency converter with older/newer firm-
ware
Extension card may be installed to the fre-
quency converter with older/newer firm-
ware
Converter firmware is not support the
used extension card

13.4.27 Error 44 (rS-): Modbus Communication Error

Possible reason
Modbus communication disconnection
Bosch Rexroth AG R912005854_Edition 09
Rexroth Frequency Converter EFC x610
Solution
Correct the parameter setting
Solution
Check external terminals input signal
Ensure the right external signals have been connected cor-
rectly to the right multi-function external terminals which
are assigned for external error input ([E1.00]...[E1.04] =
32, 33)
Check the stop command via Modbus communication
(0X0088: stop according to parameter setting; 0X0090:
E-stop active). If converter receives 0X0090 , E-St will be
displayed
Solution
Use the panel that firmware is compatible with the con-
verter firmware
Update firmware of the extension card or converter
Update the converter firmware
Solution
Check communication error detection parameters
●
E8.01 and E8.02
Check the device communication wiring
●
Check status of communication target
●
Series