Transition Networks 48 VDC-TO-12VDC SPS-48V Bedienungsanleitung

COMPLIANCE INFORMATION

UL Listed

C-UL Listed (Canada)

CISPR/EN55022 Class A

FCC Regulations

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. Operation of this

equipment in a residential area is likely to cause harmful interference, in which case the user will be

required to correct the interference at the user’s own expense.

Canadian Regulations

This digital apparatus does not exceed the Class A limits for radio noise for digital apparatus set out on

the radio interference regulations of the Canadian Department of Communications.

Le présent appareil numérique n'émet pas de bruits radioélectriques dépassant les limites applicables

aux appareils numériques de la class A prescrites dans le Règlement sur le brouillage radioélectrique

édicté par le ministère des Communications du Canada.

European Regulations

Warning

This is a Class A product. In a domestic environment this product may cause radio interference in which

case the user may be required to take adequate measures.

Achtung !

Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb dieses Gerätes

Rundfunkstörungen auftreten, in weichen Fällen der Benutzer für entsprechende Gegenmaßnahmen

werantwortlich ist.

Attention !

Ceci est un produit de Classe A. Dans un environment domestique, ce produit risque de créer des

interférences radioélectriques, il appartiendra alors à l’utilsateur de prende les measures spécifiques

appropriées.

Trademark Notice

All registered trademarks and trademarks are the property of their respective owners.

graphic, electronic, or mechanical – without written permission from TRANSITION Networks.

Printed in the U.S.A. 33212.A

The TRANSITION Networks SPS-48V 48-to-12 VDC External Power Supply

provides isolated 12 VDC output voltage from a 48 VDC external input voltage

source to a media converter or similar devce.

48 VDC-to-12 VDC

External Power Supply

SPS-48V

USER’S GUIDE

Installation .................................2

Maintenance ..............................4

Technical Specifications.............6

Compliance Information.............8

INSTALLATION

NOTE: The TRANSITION Networks 48-to-12 VDC External Power Supply is

shipped with four (4) attached feet.

1. For installation, place on any well-ventilated table-top or shelf with

access to a 48 VDC power source.

2. Connect barrel connector attached to 12 VDC cord on External Power

Supply to media converter or similar device

CAUTION: Ensure that 48 VDC power source is NOT powered when

connecting power to the 48-to-12 External Power Supply. Failure to observe

this caution could result in damage to, and subsequent failure of, the 48-to-

12 External Power Supply and of any attached device.

3. Ensure that external power source is powered OFF.

Compliance UL listed EN60950; FCC & CISPR class A; CE Mark

Dimensions 5.6" x 3.3"" x 1.6""

Power Distribution +12VDC at 0.8 A maximum.

Power Consumption 14 watts maximum

Long Term Stability 0.1% for eight (8) hours (after 20 minutes warm-up)

Efficiency 70 % (typical)

Noise and Ripple 1% peak-to-peak of output voltage (typical)

MTBF Greater than 60,000 hours with typical load operating

at 20°C ambient temperature (calculated according to

MIL-HDBK-217E)

Environment Typical Operating Temperature*: 0-50°C (32°to122°F)

Storage Temperature: -20 to 85°C

Humidity: 10-90%, non condensing

Altitude: 0-10,000 feet

Warranty Lifetime

*At operating temperature range 50°C-70°C, operates linearly to 50% of full

rating.

DECLARATION OF CONFORMITY

Name of Mfg: Transition Networks

6475 City West Parkway, Minneapolis MN 55344 USA

Model: SPS-48V External Power Supply

Part Number: SPS-48V

Regulation: EMC Directive 89/336/EEC

Purpose: To declare that the SPS-48V to which this declaration refers is in

conformity with the following standards.

EMC-CISPR 22: 1985 Class A; EN 55022: 1988 Class A; EN 50082-1:1992;

EN 60950 A4:1997; IEC 801.2, IEC 801.3, and IEC 801.4; IEC 950

I, the undersigned, hereby declare that the equipment specified above conforms to the

above Directive(s) and Standard(s).

_May 8, 2001_____

Stephen Anderson, Vice-President of Engineering Date

PWR

RXF

RXC

LKF

LKC

TECHNICAL SPECIFICATIONS

Input

Input Voltage 48 VDC

Inrush Current 0.20 A (peak cold start)

Hold-Up Time 20 msec minimum at full load and nominal input

voltage

Isolation Voltage (Dielectric withstand) Meets IEC 960 for one minute.

1,500 VAC: Output/Input

500 VAC: Input/Safety GND

500 VAC: Output/Safety GND

Output

Output Voltage 12 VDC

Output Current 0.8 A

Line Regulation ±0.5 % of all output within specified range

Load Regulation ±1.0 % at 20 % load to full-rated load

Cross Regulation ±1.0 % maximum on any output change from 50 % to

100 % rated load

Transient Response Output voltage returns in less than 3 msec following a

50 % load change

Over Load Protection (OLP) When the average power rating exceeds 125%-

150% of maximum power, output voltages reduced to

a safe dissipation level; protects against short circuit of

any output.

Over Voltage Protection (OVP) 124 % ±8 % on output.

Over Circuit Protection Withstands a continous short without damage; returns

automatically to regulation upon removal of short.

No Load Operation No damage to power supply when operating at no

load.

Overshoot Protection No voltage spike at power-on, power-off, or power

failure.

4. Connect +48-VDC terminal to 48-to-12 VDC External Power Supply

terminal block control marked “+”. Turn terminal screw clockwise to

secure.

5. Connect -48-VDC terminal to 48-to-12 VDC External Power Supply

terminal block control marked “-”. Turn terminal screw clockwise to

secure.

6. Connect ground terminal to 48-to-12 VDC External Power Supply

terminal block control marked “chassis ground”. Turn terminal screw

clockwise to secure.

7. Ensure that external power source is powered ON.

GND -+

MAINTENANCE

Replacing Power Supply Module Fuse

CAUTION: Wear a grounding device and observe electrostatic discharge

precautions when replacing the fuse in the 48-to-12 VDC External Power

Supply. Failure to observe this caution could result in damage to, and

subsequent failure of, the 48-to-12 VDC External Power Supply.

CAUTION: Replace fuse only with same size and rating. Failure to observe this

caution could result in equipment damage.

CAUTION: Ensure that power source is NOT powered when disconnecting

power from, or connecting power to, the 48-to-12 External Power Supply.

Failure to observe this caution could result in damage to, and subsequent

failure of, the 48-to-12 External Power Supply and of any attached device.

1. Ensure that external power source is powered OFF.

2. Disconnect +48-VDC terminal from Media Conversion Center terminal

block control marked “+” by turning terminal screw counter-clockwise.

3. Disconnect -48-VDC terminal from Media Conversion Center terminal

block control marked “-” by turning terminal screw counter-clockwise.

4. Disconnect ground terminal from Media Conversion Center terminal

block control marked “chassis ground” by turning terminal screw

counter-clockwise.

5. Remove and retain four (4) screws that secure cover to External Power

Supply.

6. Carefully lift cover from External Power Supply.

7. Locate fuse on 48-VDC Power Supply Module.

8. Carefully remove fuse from fuse holder.

9. Install same size and rating replacement fuse in fuse holder.

10. Carefully slide cover onto External Power Supply.

11. Replace four (4) retained screws that secure cover to External Power

Supply.

12. Connect +48-VDC terminal to 48-to-12 VDC External Power Supply

terminal block control marked “+”. Turn terminal screw clockwise to

secure.

13. Connect -48-VDC terminal to 48-to-12 VDC External Power Supply

terminal block control marked “-”. Turn terminal screw clockwise to

secure.

14. Connect ground terminal to 48-to-12 VDC External Power Supply

terminal block control marked “chassis ground”. Turn terminal screw

clockwise to secure.

15. Ensure that external power source is powered ON.

Fuse Fuse Holder

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