DC Power for
Business-Critical Continuity™
SCU+ Controller
M521B, M522B, M523B, M221B
Key Features
nFlexible and scalable to satisfy
your present and future needs
n Easily configurable file
upload/download minimizes
installation time
n Long battery life-span –
sophisticated boost charge
management
n Unattended battery test –
advanced scheduled test/
constant test/fast test
n High quality failure information –
programmable logic controller
provides intelligent alarm setup
Designed for global use, the SCU+ Controller
withstands high telecom standards, and provides
great reliability and availability.
Description
The SCU+ is a powerful control unit used in 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 fast test, the SCU+ realizes easy and reliable battery maintenance.
Furthermore, with basic energy savings and easy to use web interface, the
SCU+ 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.
n Lower operating cost –
energy-saving standby function
for rectifier
M521B
M522B
M523B (without Ethernet)
2012.09
M221B
1
SCU+ Controller
Technical Specifications
Diagrams
General
Power Supply
Power Consumption
Operating Temperature Range
Relative Humidity
EMC
Safety
Approvals
M521B, M522B, M523B
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
Mechanical Data
Dimensions (H x W x D)
Standard Installation Methods
Weight
42 x 86.6 x 211.5 mm /16.5 x 34.09 x 83.28 in.
Hot pluggable in stand-alone or embedded power plants
< 0.8 kg / 1.76 Ibs
3
2
M521B
M522B
LCD with 8 x 16 characters
Protocol
Communication
RS232, 10M Ethernet
HTTP, SNMP
√
√
YDN23, EEM,
SocTpe, Rsoc
√
√
M523B
RS232
7
M221B
Inputs
3 AC voltages
12 load fuses,
6 battery fuses,
2 user inputs
Digital
2
√
1
√
No AC voltages
2 load fuses, 2 battery fuses, , 2 user relay outputs
Examples of Alarms
DC Power Plant Alarms
5
6
√
2 bi-stable contractor statues
2 LVD mono or bistable contactors, 2 user relay outputs
Outputs
4
M221B
No display
RS232, 10M
Ethernet
2 battery currents, 1 load current, 1 bus voltage,
1 battery voltage, 2 temperatures
Analog
5
6
1
Inputs/Outputs
Display
4
AC mains failure, Rectifier failure, DC/DC converter failure, High
voltage shutdown, Fan failure, Thermal derating (of rectifier
output due to high temperature)
Diagram Legend
R S232 port
1
2 Ethernet port
LCD
3
Green: Operating
4
Yellow: Minor alarm
5
6 Red: Major or critical alarm
7 Functional keys
Ordering Information
Model
M521B
M522B
M523B
M221B
Part Number
1M521BAXX
1M522BAXX
1M523BAXX
1M221BAXX
Description
SCU+ controller with Ethernet
SCU+ controller with Ethernet
SCU+ controller without Ethernet
SCU+ controller without LCD display
EmersonNetworkPower.com/EnergySystems (North America)
EmersonNetworkPower.eu/EnergySystems (EMEA)
© 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