User manual
Dx34510b_oi_e.doc / Jun-15 Page 8 / 42
2.1. Power Supply
The unit accepts DC supply from 17 V to 30 V when using terminals 1 and 2, and the consumption
depends on the level of the supply voltage (typically between 80 mA and 150 mA
plus current taken from aux. output).
For AC supply, terminals 0 VAC, 115 VAC or 230 VAC can be used. The total AC power
consumption is 7.5 VA.
Units with option "SV006" are prepared for AC supply with 24 VAC or 42 VAC and the screw
terminals are marked correspondingly.
The diagrams show a dotted line for grounding to PE. This connection is not necessary, neither for
safety nor for EMC. However, with specific applications, it can be useful to ground the common
potential of all signal lines.
When using this earthing option, please observe:
All terminals and potentials marked “GND“ will be earthed.
You should avoid multiple earthing, e.g. when you use a DC power supply where the
Minus is already connected to earth etc. Especially under poor earthing and grounding
conditions, multiple earth connections may cause serious EMC problems.
2.2. Aux. Voltage Output
Terminal 7 provides an auxiliary output of 24 VDC / 120 mA max. for supply of sensors and
encoders. Units with TTL inputs (option TTLIN1) provide a 5 VDC / 120 mA auxiliary output on
terminal 7 instead.
2.3. Inputs A, B and Reset
In the basic setup menu these inputs can be configured to PNP (switch to +) or
to NPN (switch to -). This configuration is valid for all three inputs at a time.
The factory setting is always PNP.
With standard units the input level is always HTL (Low <2.0 V and High >9.0 V)
Units equipped with option TTLIN1 provide TTL / CMOS) level (Low <0.8 V and High >3.5 V)
Independent of your setting, all functions of the unit are “active HIGH“ and the unit
triggers to positive transitions (rising edge).
With NPN setting please be aware that an open or unused RESET input is HIGH.
Therefore the unit will be kept in a continuous RESET state and will not work, unless you
tie the Reset line to GND (terminal 1 or 6)
Where your use 2-wire NAMUR type sensors, please select NPN, connect the negative
wire of the sensor to GND and the positive wire to the corresponding input.