Connection Via Extension Cable; Direct Connection; Setting Up The Measuring Chain And The Displacement Sensor; Measurement Set-Up - Brüel & Kjær Vibro ds821 Serie Betriebsanleitung

To assemble, observe the following order:
1. Hold one of both plug connector
2. Push both plug connectors together until they audibly click into place.
To disconnect, observe the following order:
1. Hold one of both plug connector
2. Pull on the silver serrated part of the plug

4.3.2 Connection via extension cable

1. Connect the extension cable with the integrated cable of the displacement sensor.
2. Connect the extension cable to the driver.

4.3.3 Direct connection

Connect the displacement sensor directly to the driver.

4.4

Setting up the measuring chain and the displacement sensor

The displacement sensor should be adjusted when the rotor is stationary.

4.4.1 Measurement set-up

0 30
+ -
0 V -24 V
-24 V
As a rule, a displacement measuring chain is adjusted with the help of a voltmeter and the
"operating voltage".
The measuring system is adjusted through the position of the sensor type to the object to be
measured. The displacement sensor is inserted and fixed in place by positioning it in the linear
measuring range (see drawing). To avoid damaging the sensor tip, the prescribed minimum
separation to the shaft (maximum displacement) must be maintained.
The minimum distance to the target must be selected so that even in the event of maximum
deflection of the shaft the distance (axial or relative to the shaft) does not fall below 0.4 mm.
In case of an axial measurement, the axial bearing clearance design and the current position of
the shaft must be considered in order to prevent damage to the sensor tip.
© Brüel & Kjaer Vibro GmbH
ends
ends
4 SIG
ds821-
3 COM
od 130
2 -DC
/
2 mm ds821/14.9.20/technical specifications subject to change/C105227.001/V02
in each hand.
in each hand.
to disconnect the connection.
Rotor
min. 0,4 mm
0 V
-2 V
-18 V
operating range
EN
l
49