Festo Контроллер позиционирования CPX-CMAX User Manual

Page 149

5. Diagnostics and error handling

5−27

Festo P.BE−CPX−CMA X−SYS−EN en 0908NH

Malfunction group 8 ć Displacement encoder error

CPX error group 108 (CPX−MMI: [Encoder error] )

No.

Message

Cause/description

Error handling

Type

Communication with
measuring system/senĆ
sor interface is disturbed
or measuring system/
sensor interface not

Position measuring system
/ sensor interface was not
detected at switch−on.

Exchange the position
measuring system /
sensor interface. Check
cables.

Error level: F2
Reset: N

sensor interface not
available

Communication between
the CMAX and position
measuring system / sensor
interface disturbed.

Check the lines of the
axis string, valve and disĆ
placement encoder/
sensor interface step−by−
step and exchange, if
necessary.

Hardware of measuring
system / sensor interĆ
face is defective

Hardware of displacement
encoder / sensor interface
is defective.

Replace the displaceĆ
ment encoder/sensor
interface.

Error level: F2
Reset: N

Error while initialising the
displacement encoder /
sensor interface.

Exchange the displaceĆ
ment encoder/sensor
interface, check the
firmware version of the
CMAX.

Invalid position values or
measuring system error

DGCI: No magnet present.

Check the magnet on
the displacement enĆ
coder. Exchange the
magnet holder, if
necessary.

Error level: F2
Reset: F

DGCI: Several magnets
present.

Make sure of the followĆ
ing: No external magnets
are allowed in the direct
proximity of the disĆ
placement encoder.

DGCI: Multiple pulses (e.g.
due to vibrations).

Check the structure.

Avoid vibrations.

DNCI: Sensor error.

Exchange the sensor
head in the DNCI, if
necessary.

Potentiometer: Operating
voltage drops under 12 V.

Check the operating
voltage, check cables
for short circuit and
corrosion.

For the error level and reset type, see section 5.2.3.