Specifications

DC Power Supply Connection – AC/DC Adaptor (AD) Plug
Note: Ignore this supplement if the unit is AC-powered.
Certain units are equipped with a Wide Range AC/DC power supply. These units
are equipped with a standard AC-type 3-prong power input connector located on
the unit rear panel. This power input connector can be used for both AC and DC
voltage inputs.
For DC operation, a compatible AC/DC Adaptor (AD) plug for attaching to your DC
power supply lines is used (see Figure 1).
Connect the wires of your DC power supply cable to the AD plug, according to the
voltage polarity and assembly instructions provided below.
Caution: Prepare all connections to the AD plug before inserting it into the unit’s
power connector.
Preparing and Connecting the Power
Supply Cable with the AD
Plug
1. Loosen the cover screw on the bottom of the AD plug to open it
(see Figure 2).
2. Run your DC power supply cable through the removable cable
guard and through the open cable clamp.
3. Place each DC wire lead into the appropriate
AD plug wire
terminal according to the voltage polarity mapping shown.
Afterwards, tighten the terminal screws close.
4. Fit the cable guard in its slot and then close the clamp over the
cable. Tighten the clamp screws to secure the cable.
5. Reassemble the two halves of the
AD plug and tighten the cover
screw.
6. Connect the assembled power supply cable to the unit.
Warning:
• Reversing the wire voltage polarity will not cause damage to the
unit, but the internal protection fuse will not function.
• Always connect a ground (earth) wire to the AD plug’s Chassis
(frame) Ground terminal. Connecting the unit without a protective
ground, or interruption of the grounding (for example, by using an
extension power cord without a grounding conductor) can cause
harm to the unit or to the equipment connected to it!
• The AD adaptor is not intended for field wiring.
Figure 1
SUP-930-03/04
Chassis
(frame)
Ground
+
Positive
pole
(Earthed)
Negative
pole
DC power
source
Open
A
D plug
(top view)
Bottom
of AD plug
A
C/DC power
input connector
on unit
DC power
cable
Wire
terminals
Cable
clamp
(closed)
Cable
guard
48/60VDC~100-240VAC/
RETURN
POWER
Figure 2