Gv204_01c_oi_e.doc / Apr-16
Page 8 / 12
5.
Power Supply
5.1.
Supply via +V
B
from an unstabilized 10 ... 30 VDC source
In general, the unit is supplied with an unstabilized DC voltage of 10 ... 30 VDC, using the screw
terV
B
and GND. In this case pin 4 of the input SUB-D-connector will also provide a +5 V
auxiliary output for encoder supply (max. 150mA).
5.2.
Supply via +V
ext
from a stab5 VDC source
By using the screw terV
ext
and GND, the unit accepts also stabilized supply from a
+5 VDC source.
Instead of the screw terminals, the unit can alternatively be powered by using Pin 4 (+ 5 V) and
Pin 5 (GND) of the 9-pin input connector (e.g. when the input comes from the encoder simulation
of a drive which is also intended to supply the splitter)..
Units supplied with 5 V only are unable to generate output levels higher
than 5 V.
In case of a 5 VDC supply via +V
ext.
and desired TTL output levels, however,
the respective DIL switch setting must be "HTL / V
ext
".
The screw terminal marked "Shield" connects the metallic housings of the SUB-D-connectors
only. Depending on individual needs for earthing and screening, it can remain unconnected or
tied to earth or to unit GND.
For technical reasons no reverse polarity protection is available when the
unit is supplied with +5 V only. Wrong polarity misconnection of the
5 VDC power may cause serious damage to the unit.
Screw terminal "+V
ext"
and pin 4 of the 9-position input connector are
galvanically connected inside the unit. It is therefore not allowed to apply
different potentials to these two positions
