6 Diagnostics and error handling
Festo – P.BE-CPX-CMAX-SYS-EN – en 2017-09b – English 83
Group 6 – Valve error
CPX error group 106 (CPX-MMI: [Error in valve] )
No. Reset typeError levelMessage
62 Valve over-temperature F2 F
Cause The valve reports over-temperature (ambient temperature too high).
Measure Provide sufficient cooling.
63 Valve jammed F2 F
Cause The valve piston does not move as expected.
Measure Replace valve.
Also check the air quality (5 μ-filter and dry air).
64 Valve load voltage outside tolerance range F2 F
Cause The valve reports insufficient load voltage. Either the cable between the CMAX
and the valve is faulty, or the valve is defective.
Measure Check lines on the axis string.
Check valve; replace if defective.
65 Valve operating voltage outside tolerance range F2 F
Cause The valve reports insufficient operating voltage. Either the cable between the
CMAX and the valve is faulty, or the valve is defective.
Measure Check lines on the axis string.
Check valve; replace if defective.
66 Overload at digital output of valve F2 F
Cause The valve reports an overload on the digital output.
Measure Check and correct the circuitry.
67 Overload at 24 V supply output of valve F2 F
Cause The valve reports an overload on the voltage output.
Measure Check and correct the circuitry.
68 Preliminary warning valve over-temperature W F
Cause The valve reports a high operating temperature. (Ambient temperature too high).
Measure Provide sufficient cooling.
Group 7 − Controller error
CPX error group 107 (CPX-MMI: [Controller error] )
No. Message Error level Reset type
72 System software error FS Poff
Cause Internal software error (firmware).
Measure If possible, read diagnostic memory and save and archive the project.
Switch controller off/on and check whether error occurs again.
Contact Support.
73 Controller hardware faulty FS Poff
Cause No communication possible with CMAX. Error is only shown on the display.
Measure Switch controller off/on and check whether error occurs again.
Replace CMAX.
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