Balluff BTL5-T1 M P-S103 Serie Instrucciones Breves página 5

BTL5-T1_ _-M_ _ _ _-P-S103
Magnetostrictive Linear Position Sensor – Profile Style
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. It is important to maintain adequate distance
between the BTL cylinder and strong, external magnetic
fields.
Cable routing
The Profibus bus line must be routed according to
Technical Guideline 2.111, Installation Guidelines for
Profibus-DP/FMS.
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
Profibus DP interface.
Cable twisted in pairs, shielded.
Maximum length of the entire field bus cable: 1200 m
The bus must be terminated at both ends in accordance
with EN 50170.
The transfer rate depends on the length of the cable:
Cable length 1)
< 100 m
< 200 m
< 400 m
< 1000 m
< 1200 m
1) Values in accordance with EN 50170
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.
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Baud rate [kBit/s] 1)
12000
1500
500
187,5
93,7/19,2/9,6
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.
The calibration procedure is described in the
comprehensive user's guide.
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.
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