The Standard Control Unit (SCU) provides detailed information and alarms regardingthe condition and status of the telecom site's power plant. If maintenance and sitevisits related to the power plant are based upon this information, they can beoptimized to save both time and money, especially if the site is located remotely.

The SCU is a hot pluggable unit optimal for use in both embedded or stand-aloneapplications. It provides remote monitoring, configuration, status information andcontrol of the DC power plant's voltage, current and alarm levels.

Designed for global use, the SCU withstands high telecom standards, and providesgreat reliability and availability.

In order to obtain detailed and extensive monitoring and control of auxiliaryequipment on site, the power plant can be upgraded from a SCU to a ACU by meansof a simple swap of the hot pluggable SCU and ACU units.

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Minimized installation time-as aresult of easily configurable fileupload/download

High quality failure information-dueto intelligent alarm setup throughusing PLC

True hot plug installation ofcontroller unit-thanks to simplifiedcommunication cable connectioninstallation to a separate connectionboard

Quick failure analysis-owing tostorage of the 200 latest alarms

Extend battery life-for advancedbattery management

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Features and Benefits

Introduction

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PLC = Programmable Logic Controller

ACU = Advanced Control Unit

Controller, SCUM501D

DC Power forBusiness-Critical Continuity

TMStandard Control Unit (SCU)

PSU PSU PSU LC

SCU

PSTN,GSM

Modem

DC Power

ENECPSEM

Operation IndicatorProtection IndicatorAlarm Indicator

LCD Display

Function Keys

ABBREVIATIONS

PSTN Public Switched TelephoneNetwork, an ordinary telephoneline

PSEM Power Supply and EnvironmentMonitoring system

SCU Standard Control Unit

PSU Power Supply Unit (AC/DCconverter/rectifier)

LC Local Computer, used foradditional alarms in extensioncabinets

ENEC EnergyMaster EmersonNetwork Energy Center, multi-platform, multi-user, distributedmulti-language webenvironment for monitoring ofEmerson Network Power DC,HPAC and UPS equipment

TM

System Layout

Mechanical Data

Dimensions (H W D) 87.9 85.3 287mm / 3.5 3.4 11.3inch

Standard Installation Methods Hot pluggable in stand-alone or embedded power plants

Weight <0.8kg / 1.76Ibs

Inputs/Outputs

Display LCD with 4 16 characters

Language English, Spanish, Portuguese, German, Italian, French

External Communication RS232 available though modem (HW option) or cable (max 15m/50 feet)

8 Digital Inputs Alarms/Events

1 Analog Input DC system voltage

2 Analog Inputs Ambient and battery temperature

3 Analog Inputs System current

8 Relay Outputs 2 A, max 60 W

2 Low Voltage Disconnect Mono & bistable contactor

Protocol EEM, RSoc, SocTpe

Inputs

Outputs

Examples of Alarms

DC Power Plant Alarms AC mains failure, Rectifier failure, DC/DC converter failure, High voltageshut-down, Fan failure, Thermal derating (of rectifier output due to hightemperature)

Ordering Information

Description Product Name Product Code

Controller, SCU, 2 2U M501D 1M500DAXX

Technical Specifications, SCU

General

Power Supply 19 to 60 VDC

Power Consumption 5W

Operating Temperature Range -40 to + 75 / -40 to + 167

Relative Humidity 0 to 95%

EMC EN 300 386:2001 class B, FCC part 15 class B

Safety IEC 60950, EN 60950, UL 60950

Approvals CE, UL and NEBS level 3

2008.11

DC Power forBusiness-Critical Continuity

TMStandard Control Unit (SCU)