Troubleshooting
02.00 | MMS 22-PI1-EX/MMSK 22-PI1-EX | Assembly and Operating Manual | en | 1566685 13
5 Troubleshooting
5.1 Sensor not operating
1. Check whether the sensor cable is broken.
2. Check whether the voltage at the sensor is within the
permitted range, }3 [/7].
3. Check whether the LED lights up at the position to be sensed
and that the sensor is operating.
NOTE
If the LED does not light up or the sensor is not operating,
contact SCHUNK Service.
5.2 Sensor is operating, but not as desired
Possible cause Sources of interference Corrective action
The sensor is interfered with or
influenced by external
magnetic or soft magnetic
materials (Fe).
Motors (coils) Increase the distance
between the sensor and
sources of interference
(until the sensor operates
correctly).
Relays
Linear motors
Electrical welding
Magnetized workpieces
(workpieces made of iron (Fe)
or similar materials)
Use finger attachments
made of aluminum.
Magnetized components and
tools made of iron (adapter
plates made, screws or
hexagon socket keys, etc.)
Use components containing
aluminum. V4A screws are
recommended.
The sensor is influenced by a
different sensor.
Same or similar product Increase the distance
between the sensors to at
least 2mm.
The sensor is affected by
deposits of magnetic chips in
the vicinity (in the air gap).
Liquids with magnetic chips or
the like.
Regularly clean the
immediate environment of
the sensor. (The higher the
exposure to such fluids, the
more often it needs to be
cleaned.)
The sensor is affected by the
directly adjacent module.
Built-in magnets in the piston
of the adjacent module
Increase the distance to the
adjacent module to at least
10mm.
NOTE
If these steps do not eliminate the problem, contact SCHUNK
Service for troubleshooting.
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