Function And Characteristics; Characteristics; Function; Configuration - Balluff BTL5-H1 M K-SR92/K-Serie Betriebsanleitung

BTL5-H1_ _-M_ _ _ _-K-SR92/K_ _
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)
– Enclosure rating per IEC 60529:
Connector version IP 67
Cable version IP 68 (5 bar / 48 h)
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 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.
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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