system. If you power off the unit by pressing and holding the power
switch, some programmed events do not function until the unit is
powered on again. Examples of these programmed events are IBM Wake
on LAN
®
, and others.
Uninterruptible power supply (optional)
The technical characteristics of the uninterruptible power supply (UPS) are as
follows:
v Capacity: 500 VA/300 W
v Run time: 2.5 minutes minimum at full-rated (500 VA) load with a new,
fully-charged battery
v Output voltage in battery mode: 113 V AC ± 10% for low range; 220 V AC ± 10%
for high range.
v Frequency (in backup mode): 60 Hz ±3 Hz for line frequency > 55 Hz; 50 Hz ±3
Hz for line frequency < 55 Hz (output waveform is a stepped sinewave
approximation)
v Transfer time: <8 ms typical, 10 ms max, AC to battery
The
characteristics of the batteries are as follows:
v Replaceable by persons with typical PC hardware upgrade skills.
v Recharge time is 8 hours typical, with a maximum of 16 hours for a fully depleted
battery.
v Battery type is 12-V, 5-AH, sealed, leak-proof, maintenance-free lead-acid type.
Battery life
With a new, fully-charged battery, the UPS is capable of delivering full output for 2.5
minutes. Typical POS configurations require much less power. A typical system unit
with LCD operator display can last 15 minutes with a new, fully charged battery,
depending on print activity and 60 minutes if the terminal is in standby mode. The
battery charge capacity decreases over time and this decrease is accelerated by
heavy usage. Regular deep discharges of the battery can dramatically reduce its
useful service life. The useful life of a battery in a typical environment is one to
three years.
Input voltage
The UPS option cannot sense low- versus high-line voltages. Separate units are
designed for low- and high-line voltages. Units cannot be converted between high-
and low-line voltage. Figure 10 on page 12 shows the power outlets and connectors
of the UPS.
Attention: Damage to the UPS will occur if incorrect line voltage is applied to the
unit.
System unit interface
The UPS has an RS-232 (EIA 232)-compatible output that can connect to one of
the system unit RS-232 ports to communicate UPS status (AC power loss, low
battery) to the operating system (OS), or application. The interface is compatible
with the Microsoft Windows default UPS implementations.
Updated October 31, 2007
10 SurePOS 700 Series: SurePOS 700-721/741/781, 722/742/782 Planning, Installation, and Operation Guide
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