Function; Led Display - Balluff BTL7-A/E501-M Serie Manual De Instrucciones

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BTL7-A/E501-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. Depending
on the version, this information is made available as a
voltage or current with rising or falling gradient.
The following functions can be selected for the output
values:
Position
Velocity (with or without leading sign)
Differential position
Two outputs that can be independently assigned are
available. Two magnets can be used.
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 27). If you do not have
the PC software, the transducer can be
adjusted using the calibration device (see
page 17 ff).
10
english
3.3

LED display

LED 1
LED 2
Fig. 3-2:
Position of the BTL7 LED displays
In normal operation, the LEDs indicate the
operating states of the transducer. LED 1 is
assigned to output 1, LED 2 is assigned to
output 2 (see page 16 ff).
LED 1/LED 2
Operating state
Green
Normal function
Magnet is within the limits.
Red
Error
No magnet or magnet outside the limits.
Tab. 3-1:
LED displays in normal operation
Ignition protection
"nA" and "tb"

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