User's Manual

21
5.4 Supply voltage
The transducer is operated with a separated extra-low voltage (nominal (rated) supply
voltage 18 - 30 VDC). You can supply one or more T40HS torque flanges simultaneously
within a test bench. Should the device be operated on a DC voltage network1) , additional
precautions must be taken to discharge excess voltages.
The information in this Chapter relates to the standalone operation of the T40FM without
HBM system solutions.
The supply voltage is electrically isolated from signal outputs and shunt signal inputs.
Connect a separated extra-low voltage of 18 V - 30 V to pin 3 (+) and pin 2 (-)
of plug 1 or 3. We recommend that you use HBM cable KAB 8/00-2/2/2 and appropriate
sockets (see Accessories). The cable can be up to 50 m long for voltages 24 V,
otherwise it can be up to 20 m long.
If the permissible cable length is exceeded, you can supply the voltage in parallel over two
connection cables (connectors 1 and 3). This enables you to double the permissible length.
Alternatively, install a power supply on site.
Important
At the instant of power-up, a current of up to 4 A may flow, which could switch off power
packs
with electronic current limiters.
1)
Distribution system for electrical energy with greater physical dilatation (over several
test benches, for
example) that may possibly also supply consumers with high nominal (rated) currents.