User guide

4. Faults and diagnostics
4−25
Festo P.BE−CPX−CMA X−CONTROL−EN en 0908NH
Fault group 5  system error B
CPX error group 105 (CPX−MMI: [System error B] ) continued
No. Message Cause/description Error handling Type
3)
54 Operating voltage over
load on the controller
Short circuit in the
cables of the axis string
(between controller and
valve or valve and sen
sor interface).
· Check the cables and
modules in the axis
string (e.g. for a cable
break age), replace if
necessary.
Level: F2
Reset: F
Info: x
Defect in the CMAX con
troller
· Check CMAX, ex
chan g e if necessary.
Defect in the valve · Check the cables and
valves step by step
and exchange, if
necessary.
Defect in the sensor
(measuring system) or
sensor interface
· Check the cables and
sensor or sensor inter
face step by step and
exchange, if necessary.
55 Load voltage drop: The
power pack rating is not
sufficient
The load voltage
dropped several times
when sequencing to the
valve.
The power pack rating is
probably not sufficient
· Check total load of the
power pack and use a
more powerful power
pack. Also take into
accou n t the loads at
the valve output
(clam p i n g unit etc.).
Level: F2
Reset: F
Info: x
56 Supply pressure is in
sufficient to safely move
or hold the load
Insufficient supply pres
sure was detected dur
ing homing.
· Check supply pressure
and increas e if
necessary.
· Check parametrisation
of the supply pressure.
Level: F1
Reset: R
Info: x
57 Timeout diagnostic in
terface: FCT device con
trol was deactivated
Connection between PC
and CPX node inter
rupted.
· Check the cables.
Level: W
Reset: R
Info: x
Communication break
down due to FCT.
· Restore connection.
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