Festo CPX-4AE-4AA-H, Operating Instructions Manual

Page: 45 / 52

Festo — CPX-4AE-4AA-H — 2021-06b
Diagnostics
45
8 Diagnostics
8.1 General
Specific errors of the analogue module are reported or suppressed dependent on the module parame-
terisation
è Further information.
The monitoring of the errors can be activated or deactivated independently of each other. Active
monitoring has the following effect:
è The error is sent to the CPX bus node.
è
The module error LED and channel error LED light up.
The representation of errors in the bus nodes depends on the bus protocol è Description of bus
nodes.
A further possibility for diagnostics is the operator unit CPX-MMI. The operator unit displays the error
messages in clear text
è
Description of operator unit CPX-MMI.
8.2 Error messages
Error
number Error description Error elimination
2 Short circuit/overload at input or
output
1)
–
The behaviour in case of short cir-
cuit/overload and the error elimination
measures depend on the parameterisa-
tion of the “Behaviour after short cir-
cuit/overload” module parameter.
–
Parameter description
è
Tab. 17
Description of the “Behaviour after
short circuit/overload” module param-
eter.
1. Check the cables and connected
devices. Replace defective cables and
devices.
2. Restart voltage.
3 Wire break (idling) of current input or
current output
1)
–
Only for signal range 4 … 20 mA
–
Input: I
IN
< 1.2 mA
–
Output: no signal present.
–
Parameter description
è
Tab. 19
Description of “Monitoring of channel
0 … 3".
–
Check the cables and connected
devices. Replace defective cables and
devices.