Function And Characteristics; Characteristics; Function; Configuration - Balluff BTL5-H1 Serie Manual De Instrucciones

BTL5-H1_ _-M_ _ _ _-HC/WC-S94
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
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.
The magnet defines the measured
position on the waveguide. An
internally generated INIT pulse
interacts with the magnetic field of
the magnet to generate a magneto-
strictive 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/mas-
ter and the power supply is via
cables, which are connected using
connectors.
Dimensions for installing the
Micropulse transducer: ➥ ➥ ➥ ➥ ➥ Fig. 3-1
Dimensions for installing the mag-
net: ➥ ➥ ➥ ➥ ➥ Fig. 3-4
2.3

Configuration

2.3.1 Default settings

The transducer is delivered with
the following basic settings:
– Node-ID 1
– Resolution:
Position 5 µm
Speed: 0.1 mm/s
– Maximum usable range
– Switch points / Cam None
– Data transmission 10 ms
Baud rate and PDO-Mapping as
ordered, ➥ ➥ ➥ ➥ ➥ chapter 6 Versions.
Changing the default settings on
the BTL is carried out with the
SDO protocol according to DS 301.
2.3.2 Presettings
The parameter setting procedure
can be adapted by using the con-
figuration tools CANopen Configu-
ration Studio (available from Ixxat)
or CANsetter (available from Vec-
tor). Parameters can also be set
via SDO from another master.
2 PDOs are provided in the com-
munication profile for the transmis-
sion of data. Up to 8 bytes of the
following data can be included in a
PDO:
– Position data, 4 Byte integer
– Speed data, 2 Byte integer
– Cam status, 1 Byte integer
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