User's Manual

27
6.4
S
upply voltage
The transducer is operated with a separated extra-low voltage (nominal (rated) supply
voltage 18 - 30 V
DC
). You can supply one or more torque flanges simultaneously within a
test bench. Should the device be operated on a DC voltage network
1)
, 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.
Version b 13.01.2015 HBM: public