Balluff BML SGA-AEZ1-LZZZ 1 Series, User Manual

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10.1 Troubleshooting
Error Possible causes Troubleshooting/explanation
The controller does not receive any
travel information.
The required supply voltage is not
available.
Check if there is any voltage and that the
BML is correctly connected.
The voltage drop in the supply line is
too large.
The sensor head must receive a supply
voltage of 10…30 V.
The sensor head is not properly
connected.
Check the pin assignment using the wiring
diagrams.
There is no DRIVE-CLiQ
communication.
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.
The orientation of the magnetic tape is
incorrect.
Check the orientation of the magnetic
tape/sensor head and correct, if
necessary.
The controller does not receive any
travel information at certain points
or an
incorrect position is output when
switched on.
The distance between the sensor head
and magnetic tape is incorrect (in some
places).
Adjust the height/angle of the sensor
head. To check, move the sensor head by
hand over the entire measuring range.
Some of the magnetic poles of the
magnetic tape are damaged
(mechanically damaged or due to
strong magnets).
Exchange the magnetic tape.
Non-linearity is outside the
tolerance.
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.
Correctly position/orient the sensor head
(see Section 4).
At the beginning of the tape a
position significantly greater than
zero is output or the position is very
large.
The sensor head outputs a negative
position.
Move the sensor head to the beginning of
the area of travel and perform the Preset
function there.
During switch-on, the BML transmits
a position signal. After a short
movement, an error occurs (in the
plausibility check).
The orientation of the magnetic tape is
incorrect.
Remove magnetic tape and replace it with
a new magnetic tape in the correct
orientation.
LED is red. The sensor function is disrupted by
incorrect installation or damage to the
magnetic tape.
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.
Wrong temperature value (if
applicable)
External temperature sensor (PT1000)
is not connected or the connection is
faulty.
Check wiring. The external temperature
sensor must be connected using the
shortest possible cable.
Tab. 10-1: Troubleshooting
10
Appendix
BML SGA-AEZ1-LZZZ- _ _ _1- _ _ _ _
Absolute magnetic encoder system
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