FE23, Travel converter internal fault
The internal safety circuit in the converter has detected a fault. The output power is
switched off.
The converter must be replaced.


FE42, CAN bus 2 communication error between FPS and travel
converter
The FPS is not receiving any data from the travel converter. The main contactor K1 is
opened.
Check that the CAN bus 2 wiring and bus terminal are correct (see "CAN bus, Bus
structure CAN 2").
If the CAN bus is OK, the converter must be replaced. To test whether the converter is the
problem in faulty bus communication, the component can be contacted directly via the
onboard diagnosis of the display (Software version query, see "Display, Onboard
diagnosis, Software version query"). If Version 0.00 appears on the display when the
query is made (see "Display, Onboard diagnosis, Error codes") the component is faulty.
Remark: (Converter to 04/2005). This error message is also issued if the 48V supply
voltage is missing at X1.1 of the converter (see "Converter, Status LED"). This
is, for example, the case when the emergency-stop button has been actuated.
This error can also be caused by an incorrect converter encoding (cf. "Converter,
converter encoding").
Remark: (Converter from 05/2005) If the 24 V supply voltage is missing at X1.15 of the
converter, this error message also appears. Also if the connection FPS X1.12 --
travel converter X1.11 is interrupted when switching on the truck (cf. "Converter,
supply and enabling (from 05/2005)")