PS 123 12 VDC, 3 Amp Power Supply • User's Guide
PS 123, cont’d
2
PS 123 12 VDC, 3 Amp Power Supply • User's Guide
3
LED indicators
See the illustrations on page 1.
a
Power status LEDs — These front and rear panel LEDs indicate
the PS 123's status by lighting as follows:
• Green when power is applied and operation is normal
• Red when applied power causes a current overload condition
C
Continued operation in an overload condition
causes premature power supply failure.
• Unlit when an output is shorted
N
To identify the shorted output, unplug the outputs one at
a time until the LEDs light green.
Power
You can apply power to the PS 123 either by using the supplied
IEC power cord (
b
) or by installing the optional Flexible
Conduit Adapter Kit (Extron part #70-228-02) (
c
).
b
IEC connector/power supply — Plug the external IEC cord into
this connector and a 100–240 VDC source.
-OR-
c
Optional conduit EMT adapter plate — The IEC connector
and EMT plate can be replaced by this half-inch conduit EMT
adapter plate, as shown in figure 2. See “Input power — using
the Flexible Conduit Adapter Kit,” on the next page.
OUTPUTS
RED-
OVERLOAD
12 VDC TOTAL OUTPUT 3A
100-240 50/60Hz 1A MAX.
OUTPUTS
RED-
OVERLOAD
12 VDC TOTAL OUTPUT 3A
100-240 50/60Hz 1A MAX.
Extron
PS 123
12 VDC 3 A Power Supply
UL 2043 Plenum Rated
1 2 3 4 5 6 7 8
This plate can be replaced
with an optional flex conduit
kit, part #70-228-02,
for plenum applications.
N With the Flexible Conduit
Adapter kit, the PS 123 meet
the UL 2043 requirements.
Figure 2 — Using the conduit option for the PS 123
Outputs
d
DC Output connectors — Connect the power cables from the
devices that will receive power from the PS 123 to these 3.5 mm
captive screw connectors.
The PS 123 supports up to eight power supply outputs. For
details on limitations and how to wire these captive screw
connectors, see “Output power — wiring the DC output
connectors,” on page 7.
Connections
Input power — using the IEC power cord
Use the included IEC power cord to connect the PS 123 to a
100 VAC to 240 VAC, 50/60 Hz power source.
Make sure that the source device, the PS 123, and all output
devices are turned off and disconnected from the power source
before you begin.
W
The circuit breaker used for this connection should
be rated no lower than 20 amps.
Input power — using the Flexible Conduit Adapter
Kit
The optional Flexible Conduit Adapter Kit consists of
• One EMT adaptor plate
• One 6-foot long electrical conduit
• Three 7.5 feet, 18-gauge spade connector power wires
• One UL rated zip tie wrap
• Three auxiliary crimp style spade connectors designed for
14- to 16-gauge wires
N
If needed, Extron recommends using a UL-rated
crimp tool to terminate the spade connectors. One
recommended choice is the Molex crimp tool (Molex part
#19285-0008).
The kit provides a convenient means to replace the PS 123 IEC
power cord with conduit, where required by local codes.
Make sure that the source device, the PS 123, and all output
devices are turned off and disconnected from the power source
before you begin.
W
The circuit breaker used for this connection should
be rated no lower than 20 amps.
