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2
No. 827351 EN ∙ C18; subject to modification. Replaces edition 0507.
english
Shielding and cable routing
Defined ground!
The BTL and the control cabinet must be at the
same ground potential.
Shielding
To ensure electromagnetic compatibility (EMC), observe
the following:
– Connect the BTL and controller using a shielded cable.
Shielding: Copper filament braided, at least 85%
coverage.
– Connector version: Shield is internally connected to
connector housing.
Magnetic fields
The position measuring system is a magnetostrictive
system. Be sure to provide sufficient distance of the BTL
from strong external magnetic fields.
Cable routing
Do not route the cable between the BTL, controller, and
power supply near high voltage cables (inductive stray
noise is possible). The cable must be routed tension-free.
Inductive stray noise from AC harmonics (e.g. from phase
angle controls) are especially critical and the cable shield
offers very little protection against this.
The signal is transmitted to the controller via the
CANopen interface.
Preferably use a shielded cable where wires 2
and 3 and wires 4 and 5 are twisted.
The transfer rate is dependent on the cable length, whe-
reby the cable length is limited to a maximum of 2500 m
(Ø 6 to 8 mm) (see table).
Cable length
1)
Baud rate [kBaud]
1)
< 25 m
1000
< 50 m
800
< 100 m
500
< 250 m
250
< 500 m
125
< 1000 m
100
< 1250 m
50
< 2500 m
20/10
1) Values in accordance with CiA DS 301
Stub cables may be max. 0.3 m.
Noise elimination
To avoid equipotential bonding (current flow) through the
cable shield, please note the following:
– Use insulating bushes.
– Put the control cabinet and the system in which the
BTL is located to the same ground potential.
BTL5-H1_ _ -M _ _ _ _ -P-S94
Magnetostrictive Linear Position Sensor – Profile Style
Installation
NOTICE!
Improper installation
Improper installation can compromise the function of the
BTL and result in damage.
►
For this reason, ensure that no strong electrical or
magnetic fields are present in the immediate vicinity
of the BTL.
►
The recommended spacing for the installation must
be strictly observed.
Any orientation is permitted. Mount the BTL on a level
surface of the machine using the provided mounting
clamps and cylinder-head screws. A sufficient number of
mounting clamps is supplied.
In order to avoid the development of resonant
frequences from vibration loads, we recommend
arranging the mounting clamps at irregular
intervals.
The BTL is electrically isolated from the machine with the
supplied insulating bushes.
1.
Guide the BTL into the mounting clamps.
2.
Attach BTL to the base using mounting screws (tighten
screws in the clamps with max. 2 Nm).
3.
Insert magnet (accessories).
Startup
DANGER
Uncontrolled system movement
When starting up, if the position measuring system is part
of a closed loop system whose parameters have not yet
been set, the system may perform uncontrolled
movements. This could result in personal injury and
equipment damage.
►
Persons must keep away from the system’s
hazardous zones.
►
Startup must be performed only by trained technical
personnel.
►
Observe the safety instructions of the equipment or
system manufacturer.
1.
Check connections for tightness and correct polarity.
Replace damaged connections.
2.
Turn on the system.
3.
Check measured values and adjustable parameters
regularly (especially after replacing the BTL or after
repair by the manufacturer). Recalibrate the BTL, if
necessary.
Operating notes
– Check the function of the BTL and all associated
components on a regular basis.
– Take the BTL out of operation whenever there is a
malfunction.
– Secure the system against unauthorized use.
