4. Faults and diagnostics
4−30
Festo P.BE−CPX−CMA X−CONTROL−EN en 0908NH
Fault group 8 measuring system error
CPX error group 108 (CPX−MMI: [Encoder error] ) continued
No. Message Cause/description Error handling Type
1)
84 Reference position of the
measuring system lost
Although the controller
has set the status to
Referenced", the
measuring system/
sensor interface re
ported Not referenced".
· Reference again. Level: F2
Reset: N
Info: x
85 Operating voltage of the
measuring system/sen
sor interface outside of
the tolerance range (un
dervoltage)
Operating voltage of the
measuring system too
low.
· Check the power
supply.
· Check the cables at
the axis string.
Level: F2
Reset: F
Info: x
87 Defective measuring sys
tem cable or measuring
system in the electrical
end−position (potentio
meter)
Faulty measuring system
cable.
· Check the power
supply.
· Check the cables at
the axis string.
· It may be necessary to
switch on/off.
· Exchange measuring
system or sensor in
terface if necessary.
Level: F2
Reset: N
Info: x
Measuring system in the
electrical end position
(only potentiometer)
· Move the measuring
system (potentio
meter) away from the
end position.
89 Faulty data contents in
the position measuring
system / sensor interface
The position measuring
system / sensor inter
face contains incorrect
or contradictory data.
· Switch the power
supply off and then on
again.
When the error is sig
naled again:
· Replace the measur
ing system/sensor in
terface.
· Check firmware of the
CMAX.
Level: F2
Reset: N
Info: x
1)
Level: fault level, see section 4.2.3; (can alternatively be parametrised as a warning or error)
Reset: behaviour upon reset, see section 4.2.4
Info: = no info; x = additional info, see FCT or section 4.3.3