HBM T40B Montageanleitung Seite 50

Electrical connection
48
The information in this section relates to the self‐con­
tained operation of the T40B, without HBM system solu­
tions.
The supply voltage is electrically isolated from signal out­
puts and shunt signal inputs. Connect a separated
extra‐low voltage of 18 V to 30 V to pin 3 (+) and pin 2
( ) of plugs 1 or 3. We recommend that you use HBM
cable KAB 8/00-2/2/2 and the appropriate sockets (see
Accessories). The cable can be up to 50 m long for volt­
ages ≥24 V, otherwise it can be up to 20 m long.
If the permissible cable length is exceeded, you can feed
the supply voltage in parallel over two connection cables
(plugs 1 and 3). This enables you to double the permissi­
ble length. Alternatively, install an on‐site power supply.
Important
The instant you switch on, a current of up to 4 A may
flow and this may switch off power supplies with elec­
tronic current limiters.
A3452-10.0 T40B