Customer Interface; Energy Saver System Mode; Advanced Battery Management; Options And Accessories - Eaton 93PM Installation And Operation Manual

1.1.3

Customer Interface

Building Alarm Monitoring – Up to five inputs in the UPS are available to connect the facility's alarm
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system contacts. Some system configurations may limit the number of inputs available. The UPS uses
these inputs to monitor the building alarms in addition to the UPS status. See Chapter 7, "Communication, "
for additional information.
Alarm Contact – One alarm contact is provided for connection to equipment at the facility, such as a light,
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an audible alarm, or a computer terminal. The equipment connected to this contact alerts you to a UPS
alarm. See Chapter 7, "Communication, " for additional information.
Minislot Communication Bays – Four communication bays are standard equipment. One to four optional
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Minislot
the front of the UPS and are hot-pluggable. See Chapter 7, "Communication, " for additional information.
1.1.4

Energy Saver System Mode

The 93PM Series UPS offers an Energy Saver System (ESS) mode that maximizes efficiency by eliminating
unnecessary power conversion when the commercial power source is within acceptable voltage and frequency
limits. In this mode, the UPS is actively monitoring the critical bus and instantly and seamlessly transitions to
double-conversion mode (inverter online) if a commercial electrical power brownout, blackout, overvoltage,
undervoltage, or out-of-tolerance frequency condition occurs. See Chapter 6, "UPS Operating Instructions," for
additional information.
1.1.5

Advanced Battery Management

Advanced Battery Management (ABM) technology uses sophisticated sensing circuitry and a three-stage
charging method that extends the useful service life of UPS batteries while optimizing the battery recharge
time. ABM also protects batteries from damage due to high current charging and inverter ripple currents.
Charging at high currents can overheat and damage batteries.
In charge mode, the batteries are recharged. Charging lasts only as long as it takes to bring the battery system
up to a predetermined float level. Once this level is reached, the UPS battery charger enters float stage and the
charger is operating in constant voltage mode.
Rest mode begins at the end of charge mode; that is, after 48 hours of float charging. In rest mode, the battery
charger is completely turned off. The battery system receives no charge current during this mode, which lasts
for about 28 days. During rest mode, the open circuit battery voltage is monitored constantly, and battery
charging is resumed when necessary.
1.2

Options and Accessories

Contact an Eaton sales representative for information about the following options.
1.2.1

Integrated Battery Cabinet

Battery backup protection with additional runtime can be provide by equipping the UPS system with up to four
Integrated Battery Cabinets (IBCs) containing sealed lead-acid, maintenance-free batteries. The IBCs are
housed in single, free-standing cabinets designed for line-up-and-match installation, but may be installed
separate from the UPS cabinet. An external battery disconnect switch or tie point must be used when three or
four IBCs are located separate from the UPS cabinet. The IBCs may be installed on either the right or left side
of the UPS cabinet. The recommended installation location for adjacent battery cabinets is on the right side of
the UPS cabinet.
1.2.2

Integrated Accessory Cabinet-Distribution

The Integrated Accessory Cabinet-Distribution (IAC-D) provides power distribution with up to 2 42-pole
distribution panel or up to eight 3-pole 250A subfeed breakers. The IAC-D is housed in a single, free-standing
cabinet designed for line-up-and-match installation, but may be installed separate from the UPS cabinet. The
recommended installation location for an adjacent IAC-D is to the left of the UPS cabinet.
Eaton 93PM UPS (60–100 kW, 480V) Installation and Operation Manual P-164000227—Rev 2
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connectivity cards can be installed in the UPS at any time. Minislot cards are quickly installed at
Introduction
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