
34
Magtrol TM Series In-Line Torque Transducers
Chapter 2 – Installation / Configuration
2.7.3
c
onnecTIon
To
n
on
-M
agTrol
e
lecTronIcS
To connect the torque transducer to electronic devices not manufactured by Magtrol, refer to the
following connection diagram.
A
B
C
D
E
F
Tacho O/P
Shield
Shield
(Supply 0 V)
OV
AL
(Supply 20 to 32 VDC) U
AL
OV
Sig
Torque O/P
BITE
(switch closed = BITE active)
TM Torque Transducer housing
V
CC
5 to 30 VDC
1 k
Ω
R (pull-up)
Shield
(+15V)
(-15V)
x 1
*
U Torque
Figure 2–20 Wiring Diagram for Connection to Non-Magtrol Electronics
* A Differential Amplifier is required for elimination of potential DC voltage developing in the 0V leg (0VAL). If there
is no Differential Amplifier, a zero shift of the torque signal will occur depending on the resistance and the length of the
cable..
2.7.3.1
Pull-up Resistance
A pull-up resistor must be incorporated into the circuit. Pull-up resistance should be set to the
following, dependent upon the V
CC
of the application:
v
CC
pull-up resistance
5 V DC
1 k
W
20–32 V DC
4.7 k
W
Note:
If the electronics used for speed measurement already has its own
internal pull-up resistor, make sure the setting is in accordance with
the table above.
2.7.3.2
Tachometer Signal
The tachometer (tacho) signal must be shielded separately. For this purpose, Magtrol recommends
using the Model ER 107 Cable Assembly (see
Figure 2-21).