AX34509b_e.doc / Mrz-16
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When using the 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 17 to 30 VDC with use of terminals 1 and 2. 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.
2.2.
Aux. voltage output
Terminal 7 provides an auxiliary output of 24 V DC / 100 mA max. for supply of sensors and
encoders. This is valid for AC supply and DC supply of the unit as well.
2.3.
Analogue measuring inputs
There are two analogue inputs with common minus potential available (Input A and Input B).
Both refer to the AGND potential of terminal 5 which is internally connected to terminals 1, 6
and GND.
The analogue inputs can be configured for voltage input (+/- 10 V) or current input
(0 / 4 – 20 mA) by means of internal jumpers.
Ex factory, both inputs are always configured for current input.
(see section 3 for jumper settings)
