Westinghouse SE 3718S User Manual

SE 3718S

U
P
S

NINTERRUPTABLE

OWER

UPPLY

5452 Betsy Ross Drive
Santa Clara, CA 95054-1184
[phone]
FAX [phone]

P/N 66109090001, Rev. C

II SE 3718S UNINTERRUPTABLE POWER SUPPLY

SAFETY INSTRUCTIONS

(See Section 1)

SICHERHEITVORSCHRIFT

(Siehe Kapitel 1)

INSTRUCCIONES DE SEGURIDAD

(Mire Seccion 1)

INSTRUCTIONS DE SECURITE

(Voir Section 1)

NOTICE

The SE 3718S Uninterruptable Power Module manufactured by Westinghouse Security Electronics
has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15
of the FCC rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions herein, may cause
harmful interference to radio communications. However, there is no guarantee that interference will
not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:

 Reorient or locate the receiving antenna.

 Increase the separation between the equipment and the receiver.

 Connect the equipment into an outlet on a circuit different from that to which the receiver is

connected.

 Consult the dealer or an experienced radio/TV technician for help.

© 1995 Westinghouse Security Electronics

All rights reserved. Printed in the United States of America.

SE 3718S UNINTERRUPTABLE POWER SUPPLY III

LIMITED WARRANTY

Westinghouse Security Electronics (WSE) warrants to the original user the equipment manufactured by
WSE as described herein to be free from defects in material and workmanship for a period of one year
from the date of purchase by such user or fifteen (15) months from the date of shipment from the factory,
whichever is sooner (command key / magnetic stripe card warranties differsee below), provided:

I WSE has been notified within such period by return of any alleged defective equipment, free and

clear of any liens and encumbrances to WSE or its authorized dealer at the address specified,
transportation prepaid; and

II the equipment has not been abused, misused or improperly maintained and/or repaired during such

period; and

III such defect has not been caused by ordinary wear and tear; and

IV such defect is not a result of voltage surges/brownouts, lightning, water damage/flooding, fire,

explosion, earthquakes, tornadoes, acts of aggression/war, or similar phenomena; and

V accessories used as integral to WSE systems have been approved by WSE (e.g., coaxial cables,

batteries, etc.); and

VI the equipment has been installed, the installation supervised or installation tested by an authorized

WSE dealer.

WSE shall at its option, either repair or replace, free of charge, the equipment found, upon WSE's
inspection to be so defective, or if agreed upon, refund the purchase price, less a reasonable allowance
for depreciation, in exchange for the equipment.

WSE makes no other warranty, and all implied warranties including any warranty of merchantability or
fitness for a particular purpose are limited to the duration of the expressed warranty as set forth above.

WSE's maximum liability hereunder is limited to the purchase price of the equipment. In no event shall
WSE be liable for any consequential, indirect, incidental or special damages of any nature arising from
the sale or use of the equipment.

Some states do not allow limitations on incidental or consequential damages or how long an implied
warranty lasts, so the above limitations may not apply. This warranty gives specific legal rights; however,
other rights which vary from state to state, may pertain.

Analog command keys are warranted for 5 years; digital command key / magnetic stripe card warranties
vary  see product literature.

IV SE 3718S UNINTERRUPTABLE POWER SUPPLY

SE 3718S UNINTERRUPTABLE POWER SUPPLY V

Table of Contents

Section 1: Introduction ............................................................................ 1-1

Configuration .............................................................................................. 1-1

System Overview ........................................................................................ 1-1

System Applications ................................................................................... 1-2

Safety Instructions ...................................................................................... 1-3

SIcherheitvorschrift...............................................................................1-3

Instrucciones de Seguridad .................................................................. 1-3

Instructions de Securite ........................................................................ 1-4

Section 2: Description..............................................................................2-1

Physical Description ................................................................................... 2-2

Functional Description ................................................................................ 2-3

Primary Switching Power Supply Circuitry ........................................... 2-3

Battery Charger Circuitry...................................................................... 2-3

Secondary Switching Power Supply ..................................................... 2-4

Control and Indicators Circuitry ............................................................2-4

Indicator LEDs ...................................................................................... 2-4

Controls ................................................................................................ 2-4

Fuses ................................................................................................... 2-5

Connectors ........................................................................................... 2-5

Section 3: Installation ..............................................................................3-1

Location and Mounting................................................................................3-1

Wiring Requirements .................................................................................. 3-1

ACU Cable Connections ....................................................................... 3-1

Lock Power Wiring Connections ........................................................... 3-3

Battery Cable Connections ................................................................... 3-6

Battery Connections  Single 24-Volt Standby Battery ....................... 3-6

Battery Connections  Dual 12-Volt Standby Batteries....................... 3-7

Section 4: Troubleshooting ..................................................................... 4-1

Customer Service ....................................................................................... 4-1

Troubleshooting Guide................................................................................ 4-1

VI SE 3718S UNINTERRUPTABLE POWER SUPPLY

INTRODUCTION 1-1

SECTION 1: INTRODUCTION

This manual provides installation and operating procedures for the Westinghouse Security
Electronics (WSE) SE 3718S Uninterruptable Power Supply (part number 92371800000).
Included are specifications, operation description, controls and indicators, installation data, and
a troubleshooting guide.

NOTE

 Changes or modifications to the equipment described herein not expressly approved by

Westinghouse Security Electronics can void the warranty and the authority of the user to
operate the system.

 Repairs to the SE 3718S shall be limited to those that can be performed without removing

the unit from its case.

 The information in this manual assumes that the reader is familiar with access control and

alarm monitoring technology, and standard installation practices.

 The information in this manual is not intended to conflict with and/or supplement the building

codes, electrical codes, or safety codes to which any given installation must conform.

CONFIGURATION

The SE 3718S is available in one configuration which accommodates both 115 and 230 volt AC
power input. Lock voltage is switch-selectable between 12 and 24 volts. Backup battery power
is standardized at 24 volts nominal.

SYSTEM OVERVIEW

The SE 3718S is a true uninterruptable power supply in that it takes power from power lines or
external storage batteries (always online in case of power failure). Normally, when AC power is
available, the batteries are always kept charged. If a power failure occurs, the batteries take over
immediately until AC power is restored.

To accomplish this, the 3718S is actually two power supplies working together. The first, or
primary power supply, provides low voltage for battery charging, and for the secondary power
supply which, in turn, produces all system voltages. During power outages, the batteries continue
to provide the low voltage needed for the secondary power supply.

1-2 INTRODUCTION

SYSTEM APPLICATIONS

The SE 3718S provides sufficient power to run an access control system consisting of the
following components:

 One 700- or 800-series ACU.

 Up to eight multiple switch monitors (SE774, SE774A) or eight door switch monitors

(SE770).

 Up to eight analog proximity sensors.

 A 24-volt backup battery.

 One SE 778 / 778A annunciator/control module powered by the ACU in 800-series systems.

 One modem (or similar accessory).

 Up to eight WSE provided RS-485 communication devices.

 Several low-current locking devices or similar accessories (see below).

The SE 3718S runs on any voltage from 85 to 264 VAC (47-63 Hz), and drives systems with either
12- or 24-volt locks at the touch of a switch. To provide maximum energy efficiency, the battery
is nominally 24 volts.

At facilities without emergency power systems, the SE 3718S provides limited emergency power
to maintain access control. The total amount of power it can deliver is fixed and should not be
exceeded (fuses could blow). Therefore, any devices in addition to those listed above may cause
the 3718S to be damaged or operate incorrectly.

As noted, installation personnel should be careful to avoid overloading the system. Because of
the many lock types available and the dynamic nature of their power requirements, and also
because of the many system configurations available, it is impossible to state exactly the number
of locks the SE 3718S is capable of driving. However, for a typical system configuration
consisting of one ACU controlling several doors, the continuous lock power load should not
exceed 4 amps at 12 VDC or 2 amps at 24 VDC. Neither should the load capacitance exceed
10,000 uF or the power supply may fail to stay online. If additional lock power is required, some
or all lock power will probably need to come from an external power supply instead of the SE
3718S.

IMPORTANT

Any external power supply must function independently and must not be paralleled with the SE
3718S. Consequently, heavy lock power loads, monitoring modules such as motion detectors,
glass break detectors, infrared sensors, and smoke detectors should not be powered by the SE
3718S; they should have separate power supplies.