Installation And Connection; Assembling The Measuring System; Alignment Of Sensor Head To Magnetic Tape - Balluff BML SF2-I2 Série Notice D'utilisation

BML SF2-I2 _ _ -GZZZ - ZZZ5-...
Incremental Magnetic Encoder System
4

Installation and connection

4.1

Assembling the measuring system

Uncontrolled system movement
If the sensor head or magnetic tape move from their
position, an abrupt change in the output signals may take
place associated with immediate and unexpected system
movements. Persons located in the tilt or travel area may
be severely injured.
► Ensure that the sensor head and magnetic tape are
firmly attached over the entire service life under the
actual ambient conditions.
► In safety applications ensure proper fastening
implementation and measures for preventing errors,
e.g. by performing an FMEA.
► Notify installation and service personnel accordingly.
NOTICE
Interference in function
Improper installation of the magnetic tape and sensor
head may impair function of the position measuring
system and lead to increased wear or damage to the
system.
► Strict adherence to all permissible distance and
angle tolerances is required (see section 4.4.1)!
► Make sure that the sensor head does not touch the
magnetic tape or the optional cover strip across the
entire measuring range.
► Install the position measuring system in accordance
with the indicated degree of protection.
Magnetic fields with ≥ 1 mT reduce the precision of the
system, magnetic fields of ≥ 30 mT destroy the magnetic
tape. The functionality of the system is no longer
ensured.
► Keep external magnetic fields (> 30 mT) away from
the measuring system.
► Avoid direct contact with magnetic retainers or other
permanent magnets!
No forces may be exerted on the plug or cable on the
housing.
► Provide the cable with a strain relief.
Excess tightening torque can damage the housing.
► Tighten the screws with the appropriate tightening
torque (see Tab. 4-1 on page 12).
10 english
DANGER
4.2

Alignment of sensor head to magnetic tape

During assembly, make sure that the sensor head is
correctly aligned to the magnetic tape.
To ensure correct operation or to obtain the required
measurement accuracy, adhere to the assembly
tolerances for the specific application (see section 4.4
starting on page 12).
To be able to utilize the maximum measuring
length, select the corresponding magnetic tape
length and pay attention to the positioning of
the sensor head to the magnetic tape
(see section 4.4.3 starting on page 15)!
When positioning the sensor head and
magnetic tape, make sure that they are aligned
correctly to each other. Direction arrows are
printed on the part label of the sensor head and
magnetic tape for this purpose. These must be
pointing in the same direction.
Alternatively, the orientation of the magnetic
tape can be determined using a pole pitch
display card (included with the
BAM TO-ML-014-02 mounting assemblies,
see page 26).
The code on the part label of the sensor head
and on the magnetic tape must be identical.