Motrona DS230 Series, Safety Manual

Page: 14 / 100

Ds230_03a_oi_e.doc / Jun-15 Page 14 / 100
5.1. Power Supply
If the unit is connected to a DC power supply network, which supplies further devices or systems, it
must be ensured that no voltages
≥
60 V can occur at the terminals X3:1 and X3:2.
If this cannot be ensured, the unit must be supplied by a separate DC power pack, which may not be
connected to further devices or systems.
The requirements for both kinds of power supply are:

Nominal voltage range from 18 … 30 VDC

Ripple < 10% @ 24 V

External fuse (2.5 A, medium time lag) required
A separate power pack must cover the following requirements:

The switch-on current of the unit is maximum 2.5 A

The consumption of the unit is maximum 45 W
The 18 … 30 VDC power supply must be connected by the pluggable 2-pin screw terminal [X3].
The power supply input is protected by an internal reverse polarity protection.
pluggable 2-pin screw terminal [X3]

The input must be protected by an external fuse
(type and value see chapter
11. “Technical Specifications”).

A SIL3 certified power supply can be used without any further external
components or protections.