Electrical connection
PAD4002A A4243-1.0 HBM: public 23
S Use shielded, low-capacitance cables only for all con
nections (interface, power supply and additional
devices) - (HBM measurement cables meet these re
quirements).
S Electrical and magnetic fields often induce interfer
ence voltages in the measurement electronics. Do not
route the measurement cables parallel to power lines
and control circuits. If this is not possible, protect the
measurement cable (e.g. with a rigid steel conduit,
minimum size M25). A minimum distance of 20mm
must be maintained between the cables to the analog
transducers and other transducer cables installed in
parallel.
6.3 Supply voltage
Regulated dc voltage of +12 to +30 V is required to oper
ate the electronics and serial communication.
Voltage source requirements
S The supply voltage must be sufficiently smoothed
(RMS value minus residual ripple > 12 V).
S The electronics have a low-loss controller with a power
consumption of 3 W during operation. The current con
sumption is therefore dependent on the level of the
supply voltage:
3
in Vvoltage
W
in A
Power requirement
=
S When switched on, the electronics briefly consume a
current of approx. 0.15 A. To ensure a safe start-up,
the power supply must be able to provide this current
without a limit being triggered. This is particularly im
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