MPS500 - MPS800

Motor Generator friendly
The low input current distortion, the high input power factor, the progressive start-up of the rectifier (settable) and the battery recharge inhibition makes Sentry MPS ideal for use in conjunction with a smaller size generator set, in some cases close to the UPS rated power.

Battery care system
Sentry MPS includes the “Battery Care System” which manages the batteries in order to obtain best performances and prolonged operating life:

• Absence of the ripple current with battery charged
• Charging on two voltage levels to optimize the recharge current and reduce the times required to restore capacity
• Recharging voltage with temperature compensation and protection against deep discharges to protect the battery, minimise aging phenomena and prolong the real battery life
• Max recharge time block to reduce electrolyte consumption to improve the lifetime of the VRLA batteries
• Battery test to check the performance and make sure the battery is always ready to work

Sentry MPS is also compatible with different battery technologies: open lead acid, AGM and Gel VRLA, NiCd.

Battery recharge capability
Sentry MPS is designed to supply the nominal load and recharge the batteries. At partial loads the spare power can be used to recharge the batteries, therefore Sentry MPS can recharge batteries with 3 hours back ups time in only 10 hours .

Flexibility
Sentry MPS Series is ON-LINE double conversion design but can also operate in:

• Smart Active
• Stand-by-Off, suitable for Emergency Escape Light (CSS – Central Supply System), as per standard EN50171.

All models can be used as frequency converter - 50/60Hz and vice versa.

Expandability
The units can be connected in parallel - up to eight modules - to increase power availability or the redundancy. The single module or the system can be expanded at any time depending on the power demand without any impact on the initial investment. Thanks to the peculiarity of the “Hot System Expansion” feature, the additional unit can be connected in parallel while the other units are on-line and supplying regular power to the load. The new UPS in on-line and will receive the updated information automatically.

Dual Bus System
The Dual Bus System supplies the priority loads from two independent sources. This configuration increases the redundancy and availability level of a multi-module configuration. Each bus may consist of a single module or up to 8 modules in parallel, kept in synchro by the optional UGS device (UPS Group Synchroniser). This allows the use of the STS (Static Transfer Switch) dowstream to power the loads.

Dynamic Dual Bus System
Two independent systems set in Dual Bus configuration can be merged together at any time for system expansion or maintenance. This provides a lot of flexibility in your installation in case of maintenance or when it is necessary to change the redundancy level of both systems. The safety of the operations is guaranteed by the optional device PSJ.

Ease of installation
Sentry MPS has a very small footprint (only 0,64mq for 200kVA). The front access makes it very easy for all servicing operation while upward ventilation makes positioning against the wall possible.

Advanced communication
MPS Series is delivered with the AROS Watch&Save 3000 Software package and is compatible with PowerNETGuard or Teleguard for remote maintenance. The UPS is supplied with two RS232 outputs for remote monitoring and a wide range of communication cards:

• Netman 102 Plus (SNMP Agent)
• Multicom 302 (MODBUS/JBUS)
• Multicom 352 (Serial Duplexer)
• Profibus Converter
• Multi I/O ( Modbus Converter of the alarms coming from outside the UPS cubicle)
• 2 alarms cards with relay contacts, alarms are user-programmable through the software.

For more information on the Communication Cards see the CONNECTIVITY area

Application
Sentry MPS guarantees maximum protection and quality of power supply for any type of load and in particular for “mission critical” applications, security and electromedical systems, industrial processes and telecommunications.