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IMPORTANT:
Go to www.extron.com for the complete
user guide,
installation instructions,
and
specifications bef
ore connecting the
pr
oduct to the po
wer source.
PS 128 Power Supply • Setup Guide
The PS 128 Power Supply is a half rack width power supply with 12 outputs. It supplies
12 VDC, 8 A DC power for up to 96 watts. It is compatible with any Extron product featuring
2-pole, 3.5 mm captive screw power connectors. This guide provides instructions for an
experienced installer to install and connect the PS 128 Power Supply.
Installation
Mount the Device
1. Turn off or disconnect all equipment power sources.
2. Mount the PS 128 in one of the following methods (see www.extron.com for optional
mounting kits and additional mounting instructions):
• Mount the PS 128 in a rack (with an optional 1U mounting kit).
• Mount the PS 128 to furniture (with an optional furniture mounting kit).
• Mount the PS 128 in an Extron Pole Vault system (with an optional mounting kit).
If using an optional mounting kit, see the mounting kit instructions for additional mounting
considerations and instructions.
Connect Devices and Power
The PS 128 can power up to 12 devices simultaneously. For each device to receive power,
connect power cables to the 2-pole, 3.5 mm captive screw connectors on the rear panel of the
PS 128. Then, apply power to the device.
OUTPUTS
RED -
OVERLOAD
PS 128
100-240VAC 50/60 Hz
1.5 A MAX
1
+-
2
+-
3
+-
4
+-
5
+-
6
+-
7
+-
8
+-
9
+-
10
+-
11
+-
12
+-
AB C
A
DC output connectors (see the next page)
B
AC power connector (see the next page)
C
Overload LED indicator (see figure 2,
A
on the next page)
Figure 1. Output Connectors and LED Indicator
PS 128 Power Supply • Setup Guide (Continued)
68-2900-50
Rev. A 07 16
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© 2016 Extron Electronics All rights reserved. www.extron.com
A
DC output connectors — Connect up to 12 devices to these 2-pole, 3.5 mm captive screw
connectors (see figure 1,
A
on the previous page). Wire the connectors as shown in the
image to the right. The outputs provide up to 12 VDC and 8 amps of current collectively.
WARNING: Electric shock hazard. The two power
cord wires must be kept separate while the power
supply is plugged in. Remove power before wiring.
AVERTISSEMENT : Risque de choc électrique
grave. Les deux cordons d’alimentation doivent être
tenus à l’écart l’un de l’autre quand l’alimentation
est branchée. Couper l’alimentation avant de faire
l’installation électrique.
NOTE: To verify proper polarity before connection to
a device, plug in the power supply with no load and
check the output polarity with a voltmeter. Remove
power before continuing.
B
AC input connector — Connect a 100-240 VAC, 50-60 Hz power source to the AC power
connector (see figure 1,
B
) on the rear panel.
Operation
RED - OVERLOAD
PS 128
12VDC 8A POWER SUPPLY
A
Figure 2. Power and Overload LED indicator
A
Overload LED indicator — Lights green when power is applied and current draw is normal
(under 8 amps) or red when the PS 128 is in a current overload condition (over 8 amps or
96 watts). There is also a duplicate Overload LED indicator on the rear panel
(see figure 1,
C
on the previous page).
ATTENTION:
• Continued operation in an overload condition may cause premature power supply
failure.
• Un fonctionnement ininterrompu dans un état de surcharge est susceptible de
provoquer une défaillance prématurée de l’alimentation électrique.
NOTE: To identify a shorted output, unplug the outputs one at a time until the LEDs
light green.
SECTION A–A
AA
Power Supply
Output Cord
2-Pole Captive Screw
Connector
Ridges
Smooth
Tie Wrap
3/16”
(5 mm) Max.
/
