Ax34601a_e_A5.doc / Feb-06
Page 6 / 20
2.3.
Analogue Inputs A and B
The unit provides two analogue inputs with a common GND potential (input A and input B)
Both input signals refer to the „Analogue GND“ potential of terminal 5, which internally is
connected to the other GND terminals 1, 6 and GND. Both inputs are individually adjustable as
voltage inputs (+/-10 volts) or current inputs (0/4 – 20 mA), by means of internal jumpers
(see 3.)
Ex factory all jumpers are set to current inputs
2.4.
Adjustable Analogue Output
The unit provides a voltage output with ranges 0 – 10 volts or -10 to + 10 volts (output current
max. 2 mA), and a current output 0/4 – 20 mA (external load 0 – 300 Ohms). The resolution of
the output is 14 bits and the update time of the output is approx. 7 milliseconds.
2.5.
GND Potential Considerations
Internally, the GND terminals of the analogue inputs and the anlogue outputs are all connected
to the negative terminal of the DC power input. For this reason it is not possible to loop
analogue current signals through several units, except these units are supplied by the AC
terminals, or by means of separate and isolated DC power units.
