Owner's manual

5. Diagnostics and error handling
5−23
Festo P.BE−CPX−CMAX−SYS−EN en 0908NH
Malfunction group 5  System error B
CPX error group 105 (CPX−MMI: [System error B]) Continued
No. Message Cause/description Error handling Type
1)
54 Controller: Overl oad power
supply
Short ci rcuit in the cables
of the axi s string (between
the controller and valve or
valve an d sensor inter
face).
· Check the cables and
modules in the axis
string (e.g . for a cable
break age), and replace
if necessary.
Error level: F2
Reset: F
Defect in the CMAX con
troller
· Check CMAX an d
exchange, if necessary.
Defect in the valve · Check the lines and
valves step−by −step and
exchange, if necessary.
Defect in the sensor (dis
placemen t encoder) or
sensor interface
· Check the lines and
sensor or sensor
interface step−by−step
and exchange,
if necessary.
55 Drop in load voltage: The
power supply unit does
not supply enough power .
The load voltage has
dropped repeatedly when
switching to the valve.
The power supply unit
capaci ty is probably not
suffi ci en t.
· Check the total load of
the power supply unit
and use a more power
ful power supply unit.
Also tak e the con su mer
at the valve output
(clam p i n g unit, etc.)
into accoun t.
Error level: F2
Reset: F
56 Supply pressure is not
suffi cient to move the load
corr ectl y or to hold the
load in the position
During homin g, it was de
termi ned that the operat
ing pressure was too low.
· Check the operatin g
pressure and increase
if necessary.
· Check the operatin g
pressure parametrisa
tion .
Error level: F1
Reset: R
57 Diagn ostic interface time
out: The FCT devi ce control
was deactivated.
Connection between the
PC and CPX node inter
rupted.
· Check the cables.
Error level: W
Reset: R
Break in communication
by FCT .
· Reestablish connection.
1)
For the error level and reset type, see section 5.2.3.