Electrical connections, LEDs
ClipX
a4643-1.0 HBM: public 39
Strain gage full or half bridge in 4-wire configuration
When connecting in a 4-wire configuration, you can only use 1-wire TEDS (as
shown in the diagram).
Fig. 15: Plug terminal X4, 4-wire pin assignment; pin 4 is not used for half bridge
circuits, TEDS optional
Important: When connecting in a 4-wire configuration, you must con-
nect the inputs of the sense lines via jumpers to the supply voltage
outputs, otherwise the measurement value will always be invalid.
3
2
14
rd
wh
bk
bu
Pt100
TEDS
Cable wire colors (HBM transducer):
bu = blue; gn = green; gr = gray;
rd = red; bk = black; wh = white;
Plug terminal X4, transducer connection
Feedback bridges for 4-wire circuitry
1
2'
3
3'
2
I
U
AI
S
4
Measurement signal +
Sense lead -
Bridge excitation voltage +
Sense lead +
Bridge excitation voltage -
Cable shield
Measurement signal -
1-Wire-TEDS
1
2