Balluff DRIVE-CLiQ Notice D'utilisation page 53

BML SGA-AEZ1-LZZZ- _ _ _1- _ _ _ _
Absolute magnetic encoder system
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.
Non-linearity is outside the
tolerance.
At the beginning of the tape a
position significantly greater than
zero is output or the position is very
large.
During switch-on, the BML transmits
a position signal. After a short
movement, an error occurs (in the
plausibility check).
LED is red.
Wrong temperature value (if
applicable)
Tab. 10-1: Troubleshooting
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Possible causes
The required supply voltage is not
available.
The voltage drop in the supply line is
too large.
The sensor head is not properly
connected.
There is no DRIVE-CLiQ
communication.
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 sensor head is not moving parallel
to the magnetic tape (for tolerances see
Section 4.3.3 and Section 4.3.4).
The distance/angle between the sensor
head and magnetic tape is too large.
The sensor head outputs a negative
position.
The orientation of the magnetic tape is
incorrect.
The sensor function is disrupted by
incorrect installation or damage to the
magnetic tape.
External temperature sensor (PT1000)
is not connected or the connection is
faulty.
Troubleshooting/explanation
Check if there is any voltage and that the
BML is correctly connected.
The sensor head must receive a supply
voltage of 10...30 V.
Check the pin assignment using the wiring
diagrams.
A green or red LED indicates that the BML
is operating normally. When the LED turns
orange, the BML is ready to connect and
the cable connection must be checked.
Check the orientation of the magnetic
tape/sensor head and correct, if
necessary.
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.
Correctly position/orient the sensor head
(see Section 4).
Move the sensor head to the beginning of
the area of travel and perform the Preset
function there.
Remove magnetic tape and replace it with
a new magnetic tape in the correct
orientation.
Check for the correct installation of the
sensor and the magnetic tape. Check if
the direction of the arrow on the magnetic
tape and sensor head matches. Check
whether the external temperature sensor
is connected (if applicable). Check
whether the sensor head is being
operated within the limits defined in
Section 4. Check magnetic tape for
mechanical or magnetic defects.
Check wiring. The external temperature
sensor must be connected using the
shortest possible cable.
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