Eaton Power Xpert 9395 Installation And Operation Manual page 27

Introduction
NOTE
The system must be in ESS mode to activate HRS mode. In HRS mode, the inverter is ON, the rectifier is OFF
and the output contactor is CLOSED.
HRS is a normal operating mode, not an alarm condition. The NORMAL light appears on the front of the UPS.
1 1 . . 2 2 . . 1 1 2 2 V V a a r r i i a a b b l l e e M M o o d d u u l l e e M M a a n n a a g g e e m m e e n n t t S S y y s s t t e e m m a a n n d d H H i i g g h h A A l l e e r r t t M M o o d d e e s s
NOTE
The Variable Module Management System (VMMS) mode maintains UPM redundancy and achieves higher
efficiencies by intelligently controlling the UPM–s load level. The efficiency rating for each UPM is highest
when loads are greater than 50% of the system rating. Therefore, shifting the load to fewer UPMs can achieve
higher efficiencies when the UPS load is lighter.
In VMMS mode, the UPS is actively monitoring the critical bus and UPMs are available to assume load in less
than 2 ms to respond to load changes.
The VMMS feature has three configurable modes of operation: Online mode, Online mode with VMMS, and
High Alert mode. All modes are selectable from the front panel.
VMMS mode supports both distributed bypass and SBM parallel configurations.
In High Alert mode, all idle UPMs go online for one hour. At the completion of the hour, the UPS defaults back
to VMMS mode. If the High Alert command is received during the one hour, the one hour timer will be
restarted.
1 1 . . 2 2 . . 1 1 3 3 M M o o n n i i t t o o r r i i n n g g a a n n d d C C o o m m m m u u n n i i c c a a t t i i o o n n
The UPS system can be further enhanced by adding optional accessories such as a Remote Emergency Power-
off (REPO) control, RMP II, SCM II, RIM II, or X-Slot communication cards. See
Chapter 5 Installing Options and Accessories
• Remote Monitor Panel II (RMP II) – An optional RMP II contains backlit status indicators and a local horn,
allowing monitoring of the operational status and alarm condition of the UPS from virtually any location
within the facility.
• Relay Interface Module II (RIM II) – An optional RIM II uses relay contact closures to indicate the UPS
operating status and alarm condition.
• Supervisory Contact Module II (SCM II) – An optional SCM II establishes an interface between the UPS
system equipment and the customer's monitor.
• X-Slot Cards – Optional X-Slot cards support several protocols, such as SNMP, HTTP, IBM
Modbus
• eNotify Remote Monitoring and Diagnostics Service – An optional service that provides 24/7 remote
monitoring of 43 alarms, temperature/humidity and battery charge information, daily heartbeat check, and
monthly report. The service also provides customer notification of significant alarms, remote diagnostics,
and dispatch of technicians. A ConnectUPS™-X Web/SNMP Card is required in an X-Slot communication
bay. An optional Environmental Monitoring Probe (EMP) is required for temperature/humidity monitoring,
See Chapter 8 Communication
6 Eaton Power Xpert 9395 UPS Installation and Operation Manual 164201764—Rev 14
Total Demand Distortion as defined by IEEE 519-1992 is the total root-sum-square
harmonic current distortion, in percent, of the maximum demand load current (the
nameplate rating of a fully rated UPS).
The Variable Module Management System and Energy Saver System modes are
mutually exclusive.
® .
for additional information on monitoring and communication features.
for additional information.
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