Vicpas IND110, Technical Manual

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IND110 Technical Manual
5-6
Power supply wiring
The IND110 is provided with 20-28 VDC power input terminals. The user must provide
a class II rated 24 VDC power supply. A class II power supply is voltage and current
limited so short circuit conditions do not become dangerous.
The supply chosen must also have an isolated output. This is important because the
24 VDC common, load cell shield, setpoint common and the 4/20 mA common are
internally connected together. These common wires must be grounded to earth but at
only ONE point. It’s best to ground the load cell shield terminal but any of the others
can serve as an alternate single ground connection. It is important that there remains
one and only one connection to earth.
Figure 13