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Alpha FlexNet MPS48-7C Technical Manual

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Technical Manual
MPS48-7C
Effective: November 2007
Alpha Technologies

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Summary of Contents for Alpha FlexNet MPS48-7C

  • Page 1 Technical Manual MPS48-7C Effective: November 2007 Alpha Technologies...
  • Page 2 Power Alpha Technologies ®...
  • Page 3 Alpha representative. NOTE: Alpha shall not be held liable for any damage or injury involving its enclosures, power supplies, generators, batteries, or other hardware if used or operated in any manner or subject to any condition not consistent with its intended purpose, or is installed or operated in an unapproved manner, or improperly maintained.

  • Page 4: Table Of Contents

    Table of Contents Safety Notes .......................... 6 Introduction ....................... 10 Theory of Operation ....................11 Specifi cations......................12 Installation......................... 14 Unpacking the MPS48-7C ................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, MPS48-7C Overview ..................... 10 Fig. 3-1, MPS48-7C 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.

  • 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. • New and replacement batteries should be of the same date code, impedance, state of charge, and manufacturer.

  • Page 10: Introduction

    1.0 Introduction Alpha’s FlexNet MPS48-7C multipurpose power supply provides primary and standby power to the Cisco Aironet 1500 Series Outdoor Mesh Access Point in wall-mount and pole-mount applications. The MPS48-7C interface module includes connections for the Aironet 1500, Ethernet backhaul, Local Craft Port, and 48Vdc auxiliary connection.

  • Page 11: Theory Of Operation

    2.0 Theory of Operation The FlexNet MPS48-7C multipurpose power supply provides fi ltered 50W output power for a typical 48V telecom bus during normal line operation. During line disruptions, the MPS48-7C supplies uninterrupted output power of 50W directly from a string of four 12V batteries.

  • 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 Surge Protection Wave”...

  • Page 13: Fig. 3-1, Mps48-7C 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, MPS48-7C Enclosure Dimensions Spare Parts and Options Part Number Product Name 189-078-20 Battery Heater for the MPS48-7C, 240Vac 189-078-21 Battery Heater for the MPS48-7C, 120Vac 745-866-20 Mounting Bracket with Hardware (included)

  • Page 14: Installation

    4.0 Installation Unpacking the MPS48-7C Remove the mounting bracket and enclosure. Inspect the MPS48-7C for shipping damage. Verify that each carton contains: • MPS48-7C enclosure • Mounting bracket and hardware • 3/4" 3-hole strain relief fi tting • 1/2" 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-B3-004, Rev. D...

  • Page 16: Enclosure Installation, Steel Or Concrete Pole

    Installation, continued Enclosure Installation, Steel or Concrete Pole To mount the MPS48-7C 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) socket or nut driver • #1 Flathead 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 230Vac. The transformer is required for powering the MPS48-7C 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: Enclosure Grounding

    IEEE 1100-1999 Powering and Grounding Electronic Equipment. • Alpha Technologies assumes no responsibility or liability for failure of the installer to comply with the requirements of all applicable local and national codes. Where allowed, exothermic welding may be used as an alternative to Burndy clamps and connectors.

  • Page 21: Aironet Cable Connection Procedure

    Installation, continued Aironet 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" knockout. Secure the top inside nut. 2.

  • Page 22: 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 23: 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. WARNING! Incorrect voltage selection can damage the unit and void the warranty. Verify the input voltage select switch matches applied AC input power.

  • Page 24: Battery Backup Mode

    Operation Battery Backup Mode In the event of an AC power outage, the MPS48-7C 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 MPS48-7C runs in battery backup mode until AC power is restored, or until the battery string reach a low-voltage shutdown level of 42V.

  • Page 25: 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 26: Maintenance

    7.0 Maintenance Battery Replacement The MPS48-7C 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 27: 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 29 Fax: +33 141 909 312 Due to continuing product improvements, Alpha reserves the right to change specifi cations without notice. Copyright © 2007 Alpha Technologies, Inc. All rights reserved. Alpha is a registered trademark of Alpha Technologies. 021-511-B3-004, Rev. D.

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