Extron Electronics VN-Matrix 250 User Guide - Manual (Page 20)

Connections
Power
The provided 12 VDC, 3 A power supply connects to
a 2‑pole, 3.5 mm captive screw receptacle on the rear
panel of the encoder (see
figure 6 , A on page 13), or
decoder (see figure 7 , A on page 13).
1. Connect the captive screw connector from the
power supply to the power receptacle.
CAUTION: Electric shock hazard — The
two power cord wires must be kept separate
while the power supply is plugged in. Remove
power before wiring.
2. Connect the AC power cord of the power supply
unit to a 110 or 220 VAC electrical source.
If it is necessary to wire the captive screw
connector, ensure the polarity of the wires is correct (see the figure to the right).
Ensure the wires are stripped correctly (see the attention and note boxes below).
ATTENTION:
• Always use a power supply provided by or specified by Extron. Use of an
unauthorized power supply voids all regulatory compliance certification and
may cause damage to the supply and the end product.
• Extron power supplies are certified to UL/CSA 60950‑1 and are classified as
LPS (Limited Power Source). Use of a non‑LPS or unlisted power supply will
void all regulatory compliance certification.
• This product is intended for use with a UL Listed power source marked
“Class 2” or “LPS” and rated 12 VDC, minimum 3.0 A.
• The power supply provided must only be used with a single VNM 250 device.
Never use it to power multiple devices.
• The power supply shall not be located in air handling spaces or in wall cavities.
The power supply is to be located within the same vicinity as the Extron AV
processing equipment in an ordinary location, Pollution Degree 2, secured to
the equipment rack within the dedicated closet, podium, or desk.
• The installation must always be in accordance with the applicable provisions of
National Electrical Code ANSI/NFPA 70, article 725 and the Canadian Electrical
Code part 1, section 16.
• The power supply shall not be permanently fixed to building structure or similar
structure.
• If a power strip is used, for example within rack‑mounted installations, ensure
that the current rating for the power strip and the supply is sufficient for all the
equipment within the rack.
• The length of the exposed wires in the stripping process is critical. The ideal
length is 3/16 inch (5 mm). If it is any longer, the exposed wires may touch,
causing a short circuit between them. If it is any shorter, the wires can be easily
pulled out even if tightly fastened by the captive screws.
NOTE: Do not tin the wires. Tinned wire does not hold its shape and can become
loose over time.
2.0 A MAX
POWER
12V
SECTION A–A
Ridges Smooth
Power Supply
Output Cord
A A
3/16"
(5 mm) Max.
VNM 250 • Rear Panel and Connections 14