Appendix; Troubleshooting - Balluff BML-S1F-A/Q-M0-0-KA/KD/KF Serie Manual De Instrucciones

BML-S1F_-A/Q _ _ _ -M_ _ 0- _ 0-...
Incremental Magnetic Linear Encoder
10

Appendix

10.1

Troubleshooting

Error
The controller does not receive any
travel information.
The controller does not receive any
travel information at certain points or an
incorrect position is output when
switched on.
Position signal with strong noise
interference.
Reference signal is not output.
Non-linearity is outside the tolerance.
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Possible causes
The required supply voltage is not
available.
The voltage drop is too high.
Cables are not correctly connected.
The orientation of the magnetic tape is
incorrect.
The distance between the sensor head
and magnetic tape is incorrect (in some
places).
Some of the magnetic poles of the
magnetic tape are damaged
(mechanically damaged or due to
strong magnets).
The distance between the sensor head
and magnetic tape is too large.
The orientation of the magnetic tape
with reference point is incorrect.
The sensor head is not moving parallel
to the magnetic tape (for tolerance, see
Fig. 4-1).
The distance/angle between the sensor
head and magnetic tape is too large.
Troubleshooting/explanation
Check if there is any voltage and that
the BML is correctly connected.
The position measuring system must
have an operating voltage of 5 V ±5%.
Check the voltage over the sense line
(voltage drop, see page 14).
Check the cables using the wiring
diagrams.
Check the orientation of the magnetic
tape:
The reference point marking must be
on the right side (lengthwise direction)
or the rear side (crosswise direction) of
the sensor head (Fig. 3-1).
Exchange the magnetic tape.
Adjust the height/angle of the sensor
head. To check, move the sensor head
by hand over the entire measuring
range.
Exchange the magnetic tape.
Fasten the sensor head at a shorter
distance from the measuring tape.
Check the orientation of the magnetic
tape:
The reference point marking must be
on the right side (lengthwise direction)
or the rear side (crosswise direction) of
the sensor head (Fig. 3-1).
Exchange the magnetic tape.
Correctly position/orient the sensor
head (see section 4).
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