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Alpha Technologies MPS48-7M Technical Manual

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Technical Manual
MPS48-7M
Effective: August 2007
Alpha Technologies

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Summary of Contents for Alpha Technologies MPS48-7M

  • Page 1 Technical Manual MPS48-7M Effective: August 2007 Alpha Technologies...
  • Page 2 Power Alpha Technologies ®...
  • Page 3 MPS48-7M Technical Manual 021-511-B4-002, Rev. B Effective Date: August 2007 Copyright© 2007 Alpha Technologies, Inc. member of The Group NOTE: Photographs contained in this manual are for illustrative purposes only. These photographs may not match your installation. NOTE: Operator is cautioned to review the drawings and illustrations contained in this manual before proceeding. If there are questions regarding the safe operation of this product, please contact Alpha Technologies or your nearest Alpha representative.

  • Page 4: Table Of Contents

    Contents Safety Notes .......................... 6 Introduction ....................... 10 Theory of Operation ....................11 Specifi cations......................12 Installation......................... 14 Unpacking the MPS48-7M ................14 Enclosure Installation, Wall-mount or Wooden Pole-mount ......14 Enclosure Installation, Steel or Concrete Pole..........16 AC Input (120/240Vac) Connection Procedure ..........17 AC Connection with High Voltage Transformer..........
  • Page 5 List of Figures and Tables Fig. 1-1, MPS48-7M Overview .................... 10 Fig. 3-1, MPS48-7M Enclosure Dimensions................ 13 Fig. 4-1, AC Connections..................... 17 Fig. 4-2, Input Voltage Select Switch ................... 17 Fig. 4-3, Streetlight AC Power Tap Cable Stripped .............. 19 Fig.

  • Page 6: Safety Notes

    Safety Notes Review the drawings and illustrations in this manual before proceeding. If there are any questions regarding the safe installation or operation of this product, contact Alpha Technologies or the nearest Alpha representative. Save this document for future reference. To reduce the risk of injury or death, and to ensure the continued safe operation of this product, the following symbols have been placed throughout this manual.

  • Page 7: General Safety Precautions

    General Safety Precautions To avoid injury: • This enclosure and its hardware must only be serviced by authorized personnel. • The enclosure must remain locked at all times, except when authorized service personnel are present. • Remove all conductive jewelry or personal equipment prior to servicing equipment, parts, connectors, wiring, or batteries.

  • Page 8: Battery Safety Notes

    Battery Safety Notes WARNING! Lead-acid batteries contain dangerous voltages, currents, and corrosive material. Battery installation, maintenance, service, and replacement must be performed only by authorized personnel. Chemical Hazards Any gelled or liquid emissions from a valve-regulated lead-acid (VRLA) battery contain dilute sulfuric acid, which is harmful to the skin and eyes.

  • Page 9: Battery Maintenance Guidelines

    Battery Maintenance Guidelines The battery maintenance instructions listed below are for reference only. Battery manufacturer’s instructions for transportation, installation, storage or maintenance take precedence over these instructions. • Inspect batteries every 6 months for: Signs of battery cracking, leaking or swelling. The battery should be replaced immediately by authorized personnel using a battery of the identical type and rating.

  • Page 10: Introduction

    1.0 Introduction Alpha’s FlexNet MPS48-7M multipurpose power supply provides primary and standby power to Wi-Fi radios in wall-mount and pole-mount applications. The MPS48-7M interface module includes connections for radio, Ethernet backhaul, local Craft port, and 48Vdc auxiliary connection. The MPS48-7M is supported by a full complement of options including batteries, 120Vac or 240Vac battery heater mat, 120Vac line cord, and a step-down transformer for high voltage streetlight applications.

  • Page 11: Theory Of Operation

    2.0 Theory of Operation The FlexNet MPS48-7M multipurpose power supply provides fi ltered 50W output power for a typical 48V telecom bus during normal line operation. During line disruptions, the MPS48-7M supplies uninterrupted output power of 50W directly from a string of four 12V batteries. Metal oxide varistor (MOV) technology provides line voltage surge suppression in the event of line cross or power spikes.

  • Page 12: Specifi Cations

    3.0 Specifi cations Input 90-132Vac (low range) or 180-264Vac (high range), 250 to 347Vac with optional Voltage Range (switch selectable) step-down transformer Frequency 47Hz or 63Hz ANSI/IEEE Std. C62.41 to Category A, B, or C requirements, using a “Ring Wave” Surge Protection or “Combination”...

  • Page 13: Fig. 3-1, Mps48-7M Enclosure Dimensions

    Specifi cations, continued 12.4" (315mm) 3.5" (89mm) 0.380" (10mm) dia. 0.395" (10mm) dia. 6.7" (170mm) 12.8" (325mm) 5.2" (132mm) Fig. 3-1, MPS48-7M Enclosure Dimensions Spare Parts and Options Part Number Product Name 189-078-20 Battery Heater for the MPS48-7M, 240Vac 189-078-21 Battery Heater for the MPS48-7M, 120Vac 745-866-20 Mounting Bracket with Hardware (included)

  • Page 14: Installation

    4.0 Installation Unpacking the MPS48-7M Remove the mounting bracket and enclosure from the shipping carton. Inspect the MPS48-7M for shipping damage. Verify each carton contains: • MPS48-7M enclosure • Mounting bracket and hardware • 3/4" 3-hole strain relief fi tting •...
  • Page 15 Installation, continued Enclosure Installation, Wall-mount or Wooden Pole Mount, continued 4. Hang the enclosure on the bracket. 5. Secure the enclosure to the bracket using the four self-tapping screws with washers (supplied). Proceed to Section 4.4. 021-511-B4-002, Rev. B...

  • Page 16: Enclosure Installation, Steel Or Concrete Pole

    Installation, continued Enclosure Installation, Steel or Concrete Pole To mount the MPS48-7M on concrete or steel poles, two user-supplied mounting straps are required (straps must be stainless, galvanized, or equivalent). Most codes require the base of the enclosure to be located a minimum height from the ground. Always verify height restrictions before installation.

  • Page 17: Ac Input (120/240Vac) Connection Procedure

    Installation, continued AC Input (120/240Vac) Connection Procedure Required Tools and Materials: • Hammer with punch or screwdriver • 1" Open-end wrench • Channellock pliers • 11/32" (9mm) torque wrench or nut driver • #1 fl athead torque screwdriver ATTENTION: The user or installer must provide an accessible system disconnect device located near the power supply enclosure as required by local electrical codes, and an over-current protection device with a maximum rating of 20A, or as required by local electrical codes.

  • Page 18: Ac Connection With High Voltage Transformer

    Installation, continued AC Connection with High Voltage Transformer The transformer converts high voltage to 240Vac. The transformer is required for powering the MPS48-7M from high voltage light pole applications. Use the following connection procedures for installing the transformer kit. Required Tools and Materials: •...

  • Page 19: Installing The Streetlight Ac Power Tap Cable

    Installation, continued AC Connection with High Voltage Transformer, continued 4.5.2 Installing the Streetlight AC Power Tap Cable 1. Remove the 1/2" EMT knockout (7/8" dia.) and the 3/4" EMT knockout (1 1/8" dia.), located in the center bottom of the enclosure. For alternate installation, remove knockouts from the right side, left side or back left of the enclosure as needed.

  • Page 20: Network Cable Connection Procedure

    Installation, continued Network Cable Connection Procedure Required Tools and Materials: Channellock pliers 1. Remove the white seal from the 3-hole strain relief fi tting, and install the base of the fi tting into the 3/4" Network Cable knockout. Secure the top inside nut. (optional) 2.

  • Page 21: Battery Connection Procedure

    Installation, continued Battery Connection Procedure Required Tools and Materials: • #2 fl athead screwdriver • Electrical tape 1. Loosen the retaining screw on the battery retaining bracket and move the bracket clear of the battery shelf. 2. If using the battery heater mat option, verify the input voltage printed on the battery heater mat label corresponds to the selected input voltage (default 240V).

  • Page 22: Operation

    5.0 Operation Start-up 1. Verify the input voltage select switch on the power module is set for the correct input voltage. The factory default setting is 240Vac. CAUTION! Incorrect voltage selection can damage the unit and void the warranty. Verify the input voltage select switch matches applied AC input power.

  • Page 23: Battery Backup Mode

    Operation Battery Backup Mode In the event of an AC power outage, the MPS48-7M switches to battery backup mode to power the load. The green status LED begins to blink, indicating the load is being powered from the battery string. The MPS48-7M runs in battery backup mode until AC power is restored, or until the battery string reach a low-voltage shutdown level of 42V.

  • Page 24: Troubleshooting

    6.0 Troubleshooting Troubleshooting Table Troubleshooting Table Fault Corrective Action Green LED is blinking after Verify AC power is ON. Check voltage at AC input block. Check initial startup AC input connector on power module. Red LED is ON solid Replace batteries. Red LED is blinking If no batteries are missing, check battery connections.

  • Page 25: Maintenance

    7.0 Maintenance Battery Replacement The MPS48-7M batteries are hot-swappable. There is no need to power down the unit when replacing the batteries. Required Tools and Materials: #2 fl athead screwdriver 1. Unplug the battery connections. 2. Loosen the retaining screw on the battery retaining bracket and move the bracket clear of the battery shelf.

  • Page 26: Battery Management

    Maintenance, continued Battery Management Batteries have limited shelf life and must be put into service in a timely manner. The chart below provides general storage guidelines and illustrates the relationship between capacity retention and storage temperature over time. Consult battery documentation for product specifi...
  • Page 27 Alpha Technologies Power ® Alpha Technologies 3767 Alpha Way Bellingham, WA 98226 Tel: +1 360 647 2360 Fax: +1 360 671 4936 Web: www.alpha.com Alpha Technologies Ltd. 4084 McConnell Court Burnaby, BC, V5A 3N7 CANADA Tel: +1 604 430 1476 Fax: +1 604 430 8908 Alpha Technologies Europe Ltd.

This manual is also suitable for:

Flexnet mps48-7m

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