Troubleshooting; Malfunction Table - Bosch Rexroth 2THE5R Instruction Manual

Table 9: Pedal malfunction table
Malfunction Occurrence possible
Proto 0 km
Pedal does x x
not supply
a signal
x x
x x
x x
Pedal (x) x
supplies
incorrect or
x
no signal
x x

14 Troubleshooting

The Table 9 is intended to support troubleshooting. This table is not exhaustive.
Issues may occur in practice that are not listed here.
If the electronic CAN pedal is faulty, an error code is emitted. The message
containing the error code depends on the protocol used (see data sheet
29898). The description of the error codes is available on request.
14�1 Malfunction table
Possible cause
Operation
Mixing up the connection lines
when connecting the pedal to
the superior control system.
x Pedal was mechanically
damaged from the outside during
operation.
x Incorrect or faulty voltage
supply:
- Pedal supply voltage is missing.
- Pedal supply voltage is too low.
x Short circuit of the output
signals of the pedal by:
- Damage to the insulation in the
connected wiring harness.
x Humidity has entered the wiring
harness or the pedal.
The input resistances RPU and/
or RPD of the control unit are
either too large (high resistance)
or too small (low resistance).
x The ground line of the pedal
is not connected to the pedal
ground of the control unit.
There is a "potential shift" due to
different grounds between pedal
and higher-level control
x The pedal EMC environment
exceed the values stated in the
data sheet.
Troubleshooting | 2THE5R, 4THE5NR, 4TH5NR
Remedy
Check the wiring and/or the wiring harness both at
the pedal connector and at the superior control.
Check the pedal for obvious damage. Replace the
product if needed.
Measure the supply voltage at the contacts of the
pedal and make sure that all contacts in the mating
connector are correctly fitted and latched.
Make sure that the mating connector is connected to
the pedal until latching.
Check the pedal and machine harness for obvious
damage. Replace the product if needed.
The seals of the wiring harness connector are
defective or the cable/pedal has been damaged.
Check whether the pedal is operated within its
"operating limits" and make sure that the input
resistances and the input capacitances of the
connected control unit are within the limits specified
in data sheet 29898.
Make sure that the ground of the pedal is connected
to the respective ground of the control unit with
a low resistance. Measure the connection.
Stop the machine.
RE 29698-01-B/2021-06-22, Bosch Rexroth AG
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