Extron Electronics Installing the Desktop Power Supply Kit User Manual

Installing the Desktop Power Supply Kit

Power Supply

Output Cord

SECTION A–A

Ridges

Smooth

A A

Extron Electronics, USA

1230 South Lewis Street
Anaheim, CA 92805

800.633.9876 714.491.1500
FAX [phone]

Extron Electronics, Europe

Beeldschermweg 6C
3821 AH Amersfoort, The Netherlands
+800.3987.6673 +31.33.453.4040
FAX [phone]

Extron Electronics, Asia

135 Joo Seng Rd. #04-01
PM Industrial Bldg., Singapore 368363
+800.7339.8766 +65.6383.4400
FAX [phone]

Extron Electronics, Japan

Kyodo Building, 16 Ichibancho
Chiyoda-ku, Tokyo 102-0082
Japan
+81.3.3511.7655 FAX [phone]

www.extron.com

2-Pole Blue

Captive Screw

Connector

3-Pole

Captive Screw

Connector

2-Pole

Direct Insertion

Captive Screw

Connector

Ridges

Smooth

2-Pole Orange
Captive Screw

Connector

(12V)

Tie Wrap

3/16”

(5 mm) Max.

The Extron External Power Supply kits can be used as additional power supplies
or to replacements. Each desktop kit consists of a power supply and a detached
IEC power cord. Each power supply includes a permanently attached 6-foot
output power cord. Two of the kits are preterminated with plug connectors. The
remaining kits can be terminated with a captive screw connector or screwlocked
into a direct-insertion captive screw connector. Unterminated power supplies have
approximately 3/16" (5 mm) of their output power cords exposed.

Determining polarity

When you are connecting the power supply output cord, voltage polarity is
extremely important.

C Applying power with incorrect voltage polarity can damage the power

supply and the device to which it is connected.

The polarity of the unterminated power supply’s output wires is identified by the
following marks (figure 1), the power cord negative (–) lead is identified by ridged
surfaces on the side of the cord.

Connecting unterminated power supplies

The power supply ships with approximately 3/16" (5 mm) of each output power
cord wire exposed. If necessary, remove the original power cord from the
powered device. Leave the wires untinned. Insert the proper polarity (+ and –)
ends of the wires into the appropriate holes on the captive screw or direct
insertion connector (figure 2). Tighten the captive screws.

For the orange 2-pole captive screw connector, use the supplied tie-wrap to strap
the power cord to the extended tail of the connector, as shown in figure 2.

To verify the polarity before connection, plug in the power supply with no load
and check the output with a voltmeter. Remove power before continuing.

W The two power cord wires must be kept separated while power is on.

• The correct polarity for the powered device is normally silk-screened near the

• The polarity of the preterminated power supply output is

Figure 1 — Power supply output cables polarity

connection points on the rear of the device.

indicated on the product label, as shown at right.

68-340-01

Rev. H

12 07

Figure 2 — Typical power connections

C The length of the exposed (stripped) copper wires is important. The ideal

length is 3/16" (5 mm). Longer bare wires can short together. Shorter
wires are not as secure in the direct insertion connectors and could be
pulled out.

N Your powered device may have shipped with a blue captive screw connector.

This blue connector can be plugged into either a blue or an orange power
receptacle on the powered device.

N Do not tin the power supply leads before installing the wires in the connector.

Tinned wires are not as secure in the captive screw connectors and could pull
out.

Power up

When the installation or replacement is complete, power up the device as follows:

1. Reassemble the device to be powered as necessary.

2. For desktop models, connect the IEC AC power cord to the power supply.

3. Plug the AC plug into a wall outlet. Check the powered device for proper

operation.