Function; Led Display - Balluff BTL7-S5 Serie Manual De Instrucciones

BTL7-S5 _ _ (B)-M _ _ _ _ -A/B/CD/Y/Z(8)-NEX-S32/KA _ _
Micropulse Transducer - Rod Style
3
Construction and function (continued)
3.2

Function

The Micropulse Transducer contains the waveguide which
is protected by an outer stainless steel tube (rod). A
magnet is moved along the waveguide. This magnet is
connected to the system part whose position is to be
determined.
The magnet defines the position to be measured on the
waveguide.
An internally generated INIT pulse interacts with the
magnetic field of the magnet to generate a torsional wave
in the waveguide which propagates at ultrasonic speed.
The component of the torsional wave which arrives at the
end of the waveguide is absorbed in the damping zone to
prevent reflection. The component of the torsional wave
which arrives at the beginning of the waveguide is
converted by a coil into an electrical signal. The travel time
of the wave is used to calculate the position that is output
in antivalent form as synchronous serial data (SSI) on the
RS-422 interface. This is done with a high level of precision
and reproducibility within the measuring range indicated as
the nominal length.
In addition to the position output value, the following
functions can be selected (only BTL7-S510(B)-...):
– Differential position
– Velocity (with or without leading sign)
– Differencial velocity
3.3

LED display

LED 1
Fig. 3-2: Position of the BTL7 LED displays
LED 1
Green Normal function
Magnet is within the limits.
Red Error
No magnet or magnet outside the limits.
10 english
LED 2
LED 2
Green Synchronous operation
Internal measurement is synchronous to SSI
query.
Off Asynchronous operation
Internal measurement is asynchronous to SSI
query.
Flashing Programming mode
green Only with BTL7-S510(B)-...
1) Asynchronous operation is reached when the external sampling rate is
> f or < 62.5 Hz (only with BTL7-S5_ _B-...), see Technical data on
A,max
page 21, Figure 8-1.
Note on configuration
(only BTL7-S510(B)-...)
The entire function scope can only be
configured with the PC software "Micropulse
Configuration Tool". To do this, the USB
communication box must be connected (see
Accessories on page 22).
When reading or writing data via the Micropulse
Configuration Tool, LED 2 flashes green to display
programming mode.
Behavior of LED 1 and the error value through the entire
range:
SSI
out
LED
21
2
Magnet
missing
≈ 5 mm
0
Null point
Fig. 3-3: Behavior of LED 1 and error value BTL7 ≥ 5 µm
For resolutions ≥ 5 µm, in the case of an error, bit 2
set, there is no error bit for resolutions < 5 µm and the
value 0 is output.
Ignition protection
"nA" and "tb"
1)
1)
End point Pos
is
21