2. Terminal Assignments
*)
The connection of PE is optional and not necessary for safety or for EMC.
However, with some applications, it can be useful to ground the common potential of all
signal lines
• When using this earthing option, please be aware that all terminals marked
GND or AGND will be earthed.
• Multiple earthing on different positions of an installation may cause
problems, especially with poor overall performance of the whole earthing
and screening system!
• The minus potential of analogue inputs is internally connected to the
minus of the DC supply. When you like to use current loops through
several units, it is therefore necessary to supply the units from either AC
power or from several, potential-separated DC sources.
2.1. Power supply
The unit accepts DC supply from 17V to 30V when using terminals 1 and 2, and the
consumption depends on the level of the supply voltage (typical 80 mA at 30V or 130mA at 17V,
plus current taken from the aux. output).
For AC supply, terminals 0 VAC and 115 VAC or 230 VAC can be used. The total AC power is
approximately 7.5 VA.
6.573.011.E00_7b_e.doc / Sep-08
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optional, see *)
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