Festo CPX-CMAX-C1-1, Mounting, Installation And Diagnostics

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5. Diagnostics and error handling
5−28
Festo P.BE−CPX−CMA X−SYS−EN en 0908NH
Malfunction group 8 Displacement encoder error
CPX error group 108 (CPX−MMI: [Encoder error]) Continued
No. Message Cause/description Error handling Type
1)
84 Reference position of dis
placement encoder was
lost Although the controller
has set the Referenced"
status, the displacement
encoder/sensor interface
signalled Not refer
enced".
·
Reference again. Error level: F2
Reset: N
85 Operating voltage of
measuring system /
sensor interface is out of
specified tolerance range
(undervoltage) The operating voltage of
the displacement encoder
is too low.
·
Check the power
supply.
·
Check the cables on
the axis string.
Error level: F2
Reset: F
87 Defective measuring sys
tem cable or measuring
system in the electrical
end−position (potentio
meter only)
Defective displacement
encoder cable.
·
Check the power
supply.
·
Check the cables on
the axis string.
·
It might be necessary
to switch it off and on
again.
·
Exchange the sensor
or sensor interface,
if necessary.
Error level: F2
Reset: N
Displacement encoder in
the electrical end position
(potentiometer only)
·
Move the displace
ment encoder (poten
tiometer) away from
the end position.
1)
For the error level and reset type, see section 5.2.3.