User’s Guide PS 123 www.extron.com Extron Electronics, USA 1230 South Lewis Street Anaheim, CA 92805 800.633.9876 714.491.1500 FAX 714.491.1517 Extron Electronics, Europe Beeldschermweg 6C 3821 AH Amersfoort, The Netherlands +800.3987.6673 +31.33.453.4040 FAX +31.33.453.4050 Extron Electronics, Asia 135 Joo Seng Rd. #04-01 PM Industrial Bldg., Singapore 368363 +800.7339.8766 +65.6383.4400 FAX +65.6383.4664 © 2007 Extron Electronics. All rights reserved.
Precautions Safety Instructions • English This symbol is intended to alert the user of important operating and maintenance (servicing) instructions in the literature provided with the equipment. This symbol is intended to alert the user of the presence of uninsulated dangerous voltage within the product’s enclosure that may present a risk of electric shock. Caution Read Instructions • Read and understand all safety and operating instructions before using the equipment.
FCC Class A Notice Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
Table of Contents Introduction . ................................................................................... 1 Front and Rear Panel Features .................................................. 1 LED indicators ............................................................................ 2 Power .......................................................................................... 2 Outputs ....................................................................................... 3 Connections ......
Table of Contents, cont’d Introduction The Extron PS 123 is a high performance, plenum rated, DC power supply that accepts a 100 VAC to 240 VAC input and outputs 12 VDC, 3 amp maximum for the total current of the eight outputs. The DC outputs are on two-pole captive screw connectors, with no per-output current limitation. Two-tone LEDs on the front and rear panel indicate normal operation (green) and overload operation (red). The rack mountable PS 123 has a 1U high, quarter rack wide, 8.
PS 123, cont’d LED indicators Outputs d 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 Continued operation in an overload condition causes premature power supply failure.
PS 123, cont’d W Installation and service must be performed by a qualified electrician only. C A UL listed electrical distribution box is recommended for the termination of the conduit opposite the PS 123 power supply. See "UL requirements," below. UL requirements The Underwriters Laboratories (UL) requirements listed below pertain to the installation of the flexible conduit onto a PS 123 power supply. • This unit is not to be used beyond its rated voltage range.
PS 123, cont’d 7. From the rear panel end, pull the EMT plate (see figure 3) out of the enclosure. 8. Thread the 18-gauge power wires through the length of the electrical conduit tube. 9. Install the EMT adapter plate (figure 1, c, on page 1) (with conduit attached) into the opening from which you removed the EMT plate in step 7. Use the Phillips head screws (figure 3) that you removed in step 2 to attach the adapter plate. 10. 15.
PS 123, cont’d C Stripping the wires to expose less than the recommended amount may cause them to slide out of the connector too easily, even if they are tightly pinched by the captive screws. C Do not tin the stripped power supply leads before attaching the captive screw plug to them. Tinned wires are not as secure in the captive screw connectors and can be easily pulled out. They may also break after being bent several times. 3.
PS 123, cont’d 2. Mount the PS 123 on the rack shelf, using two 4-40 x 3/16" screws in opposite (diagonal) corners. 3. If necessary, mount the half rack width false front panel (included with the Universal Rack Shelf only) and/or the quarter rack width false front panel (included with the PS 123) to the shelf, using two 4-40 x 3/16" screws in the front holes for each panel.
PS 123, cont’d 5. Assemble the U-bolt and the following parts in the following order (figure 11, below): 9. Secure the front panel to the mounting tray with four of the included #6 screws. a. Pass the legs of the U-bolt through the slotted holes on the mount plate flange. 10. If desired, choose one of the provided four sizes of selfadhesive cover sheets, and apply it to the underside of the mounting tray. b. Place the legs around the projector pole. PMK 450 c.
PS 123, cont’d 4. Ensure that the cables exit the end of the pipe and not the cable access hole. 5. Remove any rubber feet from the bottom of the device(s) to be mounted. 6. Secure the device(s) to the bottom plate with the provided screws. 7. Slide the top plate up the pipe until the pipe collar is positioned just below the cable access hole. Tighten the set screws until they just grip the pipe. At least three set screws must come in contact with the pipe. 8.
PS 123, cont’d Specifications General Power input ................................... 100 VAC to 240 VAC, 50/60 Hz, internal, autoswitchable, 1 A maximum Without a load: 3.6 watts With a full load on all outputs: 42 watts Power output.................................. 12 VDC, 3 A maximum total current of the 8 outputs N Maximum output current is rated at an ambient temperature of 40 °C. It decreases to 2 A at an ambient temperature of 50 °C. Temperature/humidity.................
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