DATUM ELECTRONICS
M425 TORQUE TRANSDUCER HANDBOOK
4
FAMILIARISATION
S
IMPLE DIAGNOSTICS, TESTING
AND CONNECTION
Before installing your M425 Transducer into the rig or
machine we would advise you to familiarise yourself with its
connections and operation by performing a bench test.
By connecting the Transducer directly to a Datum Universal
Interface (example A below), or to a PC via the Datum
Universal Interface (example B opposite), you will be able
to rotate the shaft to generate an output signal of RPM. By
applying a small torque by hand to the shaft you will also
be able see the change in the torque signal output on the
Universal Interface display or in the Datum Data Logging
PC software.
If you are connecting to a PC without a Datum Universal
Interface and using your own instrumentation (example C
opposite) you will be able to test your instrumentation in the
same way by simulating a signal to the interface or indicator
model you are using. The M425 supports a variety of
universal interface models.
Once you are familiar with the transducer and its outputs
continue to install as normal. If any questions arise at this
stage please call our product support team for advice.
The Datum Universal Interface display
The Datum Universal Interface has a built-in display which
you can use for familiarisation with a direct connection to the
M425 Torque Transducer (diagram A below).
Connection example (A)
M425 to the Datum Universal Interface.
Connection example (B)
M425 to PC via the Datum Universal Interface.
Connection example (C)
Direct connection from M425 to an alternative
interface or indicator.
See electrical connection guide on page 7 for further
information on connecting your own instrumentation.
+12Vdc supply
Supply ground
RS485 A: -ve data
RS485 B: +ve data
RS232 TX/RX (option)
Diagram No. 3
Diagram No. 1
Ethernet/USB
Diagram No. 2
M425
PC
M425
M425
Universal
Interface
Universal
Interface
Main power
input
Optional power supply:
15-24V dc 500mA
Main power
plug input
Optional power supply:
15-24V dc 500mA
The Universal
Interface display can
show the following
data from the M425
Torque Transducer:
