Standard Control Unit (SCU+)
Controller, SCU+
M521B, M522B, M523B,
M221B
Features and Benefits
■
Flexible and scalable to satisf y your
present and future needs
■
Minimized installation time as a result of
easily configurable file upload/download
■
Sophisticated boost charge management
gives long battery life-span
■
Automatic battery test including advanced
scheduled test / constant test / fast test
■
High quality failure information due to
1
intelligent alarm setup through using PLC
■
Lower operating cost due to energy saving
standby function for rectifier
1
DC Power for
Business-Critical Continuity™
Description
The next generation Standard Control Unit (SCU+) is a powerful control
unit used in DC power applications. The SCU+ enables remote monitoring
of the telecom site's AC mains supply, DC power plant, battery backup, site
environment, etc.
The SCU+ enables advanced battery management such as sophisticated
boost charge control, remaining time prediction, constant current test,
scheduled test and fast test. Furthermore, with basic energy saving function,
the SCU is surely a cost-efficient product.
The information and alarms, from a specific site, can be monitored or
checked by means of a simple web browser or special monitoring software.
When using a web browser, no additional software is needed and the web
browser login monitor the site is password protected.
Designed for global use, the SCU withstands high telecom standards, and
provides great reliability and availability.
PLC = Programmable Logic Controller
M521B
M522B
M523B (without Ethernet & RS232 Port )
M221B
Standard Control Unit (SCU+)
DC Power for
Business-Critical Continuity™
Technical Specifications, SCU+
General
Power Supply
Power Consumption
Operating Temperature Range
Relative Humidity
EMC
Safety
Approvals
19 to 60VDC
5W
- 40℃ to + 75℃/- 40℉ to + 167℉
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
Ethernet port
Green: Operating
Yellow: Minor alarm
Red: Major or critical alarm
RS232 port
Mechanical Data
Dimensions(H×W×D)
LCD
86.6×42×211.5mm/34.09×16.5×83.28inch
Hot pluggable in stand-alone or embedded power plants
< 0.8 kg / 1.76 Ibs
Standard Installation Methods
Weight
Functional keys
M521B
M522B
M523B (without Ethernet & RS232 Port)
Inputs/Outputs
M521B
Display
M523B
M221B
RS 232
RS232, Ethernet
LCD with 8X16 characters
Communication Interface
Protocol
M522B
RS232, Ethernet
No display
HTTP, SNMP
√
√
YDN23, EEM,
SocTpe, Rsoc
√
√
Analog
2 battery currents, 1
load current, 1 bus
voltage, 1 battery
voltage, 2 temperatures,
3 AC voltages
2 battery currents, 1 load current,
1 bus voltage, 1 battery voltage, 2 temperatures
Digital
12 load fuses, 6 battery
fuses, 2 bi-stable
contactor statues,
2 user inputs
2 load fuses, 2 battery fuses,
2 bi-stable contactor statues, 2 user inputs
Inputs
Outputs
Examples of Alarms
DC Power Plant Alarms
√
Ethernet port
Green: Operating
Yellow: Minor alarm
Red: Major or critical alarm
RS232 port
√
√
M221B
2 LVD mono or bistable
contactors, 2 user relay 2 LVD mono or bistable contactors, 2 user relay outputs
outputs
AC mains failure, Rectifier failure, DC/DC converter failure, High voltage shutdown,
Fan failure, Thermal derating (of rectifier output due to high temperature)
Ordering Information
Description
Product Name
Product Code
M521B
M522B
M523B
M221B
1M521BAXX
1M522BAXX
1M523BAXX
1M221BAXX
Controller (SCU+)
Emerson Network Power.
The global leader in enabling
Business-Critical Continuity™
Emerson Network Power
www.emersonnetworkpower.com
www.emersonenergy.com (Energy Systems, Europe)
www.emersonnetworkpower.com/energysystems
(Energy Systems, North America)
AC Power
Embedded Power
Precision Cooling
Connectivity
Monitoring
Racks & Integrated Cabinets
DC Power
Outside Plant
Services
Embedded Computing
Power Switching & Controls
Surge Protection
Business-Critical Continuity, Emerson Network Power
and the Emerson Network Power logo are trademarks
and service marks of Emerson Electric Co.
©2008 Emerson Electric Co.
2008.11