Function And Characteristics; Characteristics; Function; Available Stroke Lengths And Magnets - Balluff BTL5-H1xx-Mxxxx-B/Z-S 92/KA serie Datenblatt

BTL5-H1_ _-M_ _ _ _-B/Z-S 92/KA_ _
Micropulse Linear Transducer - Rod Style
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Function and Characteristics

2.1

Characteristics

– High data security: Output data
are checked for validity and plau-
sibility in the µC
– Notification with highest priority
on reaching the switching points
– Up to 4 positions can be evalu-
ated (DS 406)
– Definable measurement range
(cams) with high data rate
– Absolute measurement system
– Very high resolution, repeatability
and linearity
– Insensitive to vibration, shock
and contamination
– Up to 2500 m cable permitted
– Object directory per Draft Stand-
ard 406 (Encoder Profile)
– Protected IP 67 per IEC 60529
2.2

Function

The transducer contains a tubular
waveguide enclosed by an outer
stainless steel rod. A magnet at-
tached to the moving member of
the machine or to the cylinder pis-
ton is moved over the rod and its
position constantly updated.
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Installation

3.1

Mounting

When possible, use non-magnetiz-
able material for attaching the trans-
ducer and magnet ring, ➥ ➥ ➥ ➥ ➥ Fig. 3-1.
When attaching the transducer to
magnetizable materials, appro-
priate measures must be taken to
protect against magnetic disturb-
ances, ➥ ➥ ➥ ➥ ➥ Fig. 3-1. Note the
recommended distance of the
transducer and cylinder from
strong, external magnetic fields.
The magnet defines the measured
position on the waveguide. An inter-
nally generated INIT pulse interacts
with the magnetic field of the mag-
net to generate a magnetostrictive
torsional wave in the waveguide
which propagates at ultrasonic
speed.
The torsional wave arriving at the
end of the waveguide is absorbed in
the damping zone. The wave arriv-
ing at the beginning of the wave-
guide creates an electrical signal in
the coil surrounding the waveguide.
The wave propagation time is used
to define the position with a resolu-
tion of 5 µm. This takes place with
high precision and repeatability
within the measuring range indi-
cated as the nominal stroke length.
At the rod end is a damping zone,
within which no reliable signal is
available, but which may be entered
by the magnet.
The electrical connection between
the transducer, the controller/master
and the power supply is via a cable,
which depending on the version is
either fixed or connected using a
female connector.
➀ - ➂ for magnetizable materials
➃ for non-magnetizable materials
Fig. 3-1: Mounting
Dimensions for installing the
Micropulse transducer: ➥ ➥ ➥ ➥ ➥ Fig. 3-2
Dimensions for installing the mag-
net: ➥ ➥ ➥ ➥ ➥ Fig. 3-4
2.3 Available stroke lengths
and magnets
To provide for optimum fit in any
application, a wide range of stan-
dard stroke lengths and magnets in
various form factors are available.
Magnets must therefore be ordered
separately.
The following nominal stroke
lengths are available:
Stroke lengths Increments
[mm] [mm]
50 ... 500 25
500 ... 1000 50
1000 ... 2000 100
2000 ... 4000 250
Other stroke lengths on request.
non-magnetizable material
a = Spacer made of non-mag-
netizable materials
b = Magnet
english
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