Electrical Structure And Connection; Pin Assignment; Version With Wa Electronics; Pin Assignment Wa Electronics - HBM WA Series Mounting Instructions

Electrical structure and connection

4 Electrical structure and connection
The principle of measurement is based on an active quarter bridge (in the case
of the WA2, on an active half bridge), that is expanded to a full bridge
connection. The displacement transducer can be used in full‐bridge and
half‐bridge mode. The transducer is designed with integral sensor circuits to
operate in a six wire circuit.
When operating with a six wire amplifier, the cable can be shortened or
lengthened (to a maximum of 300m) without effect, as the additional sensor
circuits, gray and green, tap the voltage at the feeders in the sensor and carry
it back to the six wire amplifier. This regulates the voltage so that it reaches the
transducer loss‐free.
4.1

Pin assignment

Transducer
WA
Measurement signal ())
Measurement signal (*)
Excitation voltage ())
Excitation voltage (*)
Sensor circuit ())
Sensor circuit (*)
Shield
1)
with full bridge only
2)
for the high temperature version: violet
4.2

Version with WA electronics

The transducer is fitted with an integrated evaluation circuit for operating at
direct voltage (15...30 volts). The integrated evaluation circuit is designed for
operation with a separated extra‐low voltage (SELV circuit). The WA
10
Wire colour
Cable
connector
WH = white
1)
RD = red
BU = blue
BK = black
GN = green
2)
GY = gray
Enclosure
A00546_11_YI0_01 HBM: public
Amplifier
15‐pin 15‐pin
Sub‐D D-SUB-15HD
connector
8
15 10
6
5
13
12
Enclosure
7‐pin
MS
connector
5 A
D
3 C
2 B
8 F
7 G
Enclosure
WA...