DC Power for Business-Critical Continuity™ ACU+ Controller M820B, M821B, M820D, M821D, M820N Key Features nFlexible and scalable to satisfy your present and future needs with configurable IB (interface boards) nEasily configurable file upload/download minimizes installation time nLong battery life-span – sophisticated boost charge management nUnattended battery test – advanced scheduled test/constant test/fast test nHigh quality failure information – programmable logic controller provides intelligent alarm setup Designed for global use, the ACU+ Controller withstands high telecom standards, providing outstanding reliability and availability. Description The ACU+ is an advanced control unit designed for DC power applications. It can provide remote monitoring of the telecom site's AC mains supply, DC power plant, battery backup, diesel generator and site environment etc. Featuring advanced battery management such as sophisticated boost charge control, remaining time and capacity prediction, constant current test, scheduled test and short test, and Battery Low Voltage Disconnection (BLVD), the ACU+ realizes easy and predictive battery maintenance. Furthermore, with basic energy saving and power split function, the ACU+ is a highly cost-efficient product. The information and alarms from a specific site can be monitored or checked with a simple web browser or special monitoring software. When using a web browser, no additional software is needed, and the web browser login is password protected. nLower operating cost – energy-saving standby function for rectifier M820B M821B 2012.09 M820D M821D M820N 1 ACU+ Controller Technical Specifications Diagram General Power Supply Power Consumption Operating Temperature Range Relative Humidity EMC Safety Approvals Network Operation Center Net Management Centre 19 to 60VDC 5W - 40°C to + 75°C/- 40°F to + 167°F 0 to 90% EN 300 386, 2001 class B, FCC part 15 class B IEC 60950-1, EN 60950-1, UL 60950-1 CE, UL and NEBS level 3 SNMP ENEC IE TCP HTTP TCP/IP PSTN,GSM MODEM DC POWER RS232 Mechanical Data Dimensions (H x W x D) Standard Installation Methods Weight Inputs/Outputs Model Display Communication Protocol M820B and M821B: 42 x 86.6 x 211.5mm 1.65 x 3.41 x 8.33inch M820D, M821D and M820N:86.6 x 86.8 x 211.5mm 3.41 x 3.42 x 8.33inch Hot pluggable in stand-alone or embedded power plants < 1 kg / 2.2 Ibs M820B M821B LCD with 8 x 16 characters M820D M821D M820N LCD with 4 x 16 characters RS232, 10/100M RS232, RS485, Ethernet, USB ethernet, TCP/IP, SNMP, web server HTTP, SNMP, EEM, SocTpe, Rsoc Inputs 2 battery 2 battery currents, 1 load currents, 1 load current, 1 bus current, 1 bus Analog voltage, 2 battery voltage, 2 battery voltages, voltages, 2 3 temperatures, temperatures 3 AC voltages 1 input for status of SPD auxiliary 1 input for status contacts, 10 load of SPD auxiliary Digital fuses, 4 battery contacts fuses, bi-stable contactor status 2 LVD mono & Outputs bistable None contactors 3 DC systen voltages, 3 DC system currents, 3 temperatures, 3 AC voltages Refer to M820B Refer to M821B 1 input for status of SPD auxiliary contacts 10 load fuses, 4 battery fuses 2 LVD mono & bistable contactors Examples of Alarms DC Power Plant Alarms AC mains failure, Rectifier failure, DC/DC converter failure, High voltage shutdown, Fan failure, Thermal derating (of rectifier output due to high temperature) EmersonNetworkPower.com/EnergySystems (North America) EmersonNetworkPower.eu/EnergySystems (EMEA) ACU+ CAN PSU PSU PSU SM DU USB memory stick I2C conv IB1 or IB2 RS485 EIB SM Modules Large DU ABBREVIATIONS PSTNPublic Switched Telephone Network, an ordinary telephone line IE Internet Explorer ENEC EnergyMaster™ Emerson Network Energy Center, multi-platform, multi-user, distributed multilanguage web environment for monitoring of Emerson Network Power DC, HPAC and UPS equipment PSU Power Supply Unit (AC/DC converter/rectifier) SM DU Supervision Module for additional alarms in extension cabinets EIB Extension Interface Board IB Interface Board Ordering Information Model Part Number / Description M820B 1M820BAXX / ACU+ controller M821B 1M821BAXX / ACU+ controller M820D 1M820DAXX / ACU+ controller M821D 1M821DAXX / ACU+ controller M820N 1M820NXX / ACU+ controller Optional Interface Board IB1 4 relay outputs, 4 digital inputs 8 relay outputs, 8 digital inputs, IB2 2 temperatures 5 relay outputs, 8DC voltages, EIB 3DC currents, 2 temperatures © Emerson Network Power Energy Systems North America 2012. Business-Critical Continuity™, Emerson Network Power™, the Emerson Network Power logo, Emerson® and Consider it Solved are service marks and trademarks of Emerson Electric Co. EnergyMaster™, eSure™, NetPerform™, NetReach™, NetSpan™, NetSure® and NetXtend™ are trademarks of Emerson Network Power Energy Systems North America. 2 2012.09