6
Diagnostics
Festo – EXCM-30/-40-...-PF-EN – 1603 – English
67
Hex
Type of error/diagnostic memory
Error name
Dec
19
25
Temperature LM-CPU
Can be parameterised as:
F
/-/-
Diagnostic memory: optional
The monitor has detected a CPU temperature outside the permissible range.
Check whether the ambient temperature is within the permissible range for the controller. If the
error is still present, it means there is an internal defect and the device must be replaced.
The error can only be acknowledged if the temperature is within the permissible range.
– Acknowledgement option: Error can be acknowledged.
Definable error response(s): A,
B
1A
26
Intermediate circuit voltage exceeded
Can be parameterised as:
F
/-/-
Diagnostic memory: always
Load voltage not within the permissible range.
Internal braking resistor is overloaded; too much braking energy, which cannot be dissipated quickly
enough.
Internal braking resistor defective or internal defect.
Check parameterisation of the load voltage.
Check load voltage; measure load voltage directly at the controller input.
In the event of a defective internal braking resistor: Replace the controller.
– Acknowledgement option: Error can be acknowledged.
Definable error response(s): A,
B
1B
27
Intermediate circuit voltage too low
Can be parameterised as:
F
/W/-
Diagnostic memory: optional
Load voltage too low or incorrectly parameterised.
Check parameterisation of the load voltage.
Voltage drop under load: power supply unit too weak, supply line too long, cross section too
small?
Measure load voltage (directly at the controller input).
If you intentionally want to operate the device with a lower voltage, parameterise this malfunction
as a warning or information.
– If parameterisation as a warning: The warning disappears when the load voltage is back in the
permissible range.
– If parameterisation as an error: The error can be acknowledged.
Parameterisable error response(s):
A
1C
28
CAN Node Guarding, FB has master control
Can be parameterised as:
F
/-/-
Diagnostic memory: always
A wire break has occurred, or the CAN-Master has failed.
Check the CAN cable for a wire break: Repair or replace the CAN cable.
Check the function of the CAN-Master.
– Acknowledgement option: Error can be acknowledged.
Parameterisable error response(s):
B
, C, E, F