DS 616
INSTALLATION
TECHNICAL MANUAL
PART 2 JUNE 2002
2.6
•
EXTERNAL –48VDC BATTERY SOURCE
CAUTION
: To reduce risk of fire and injury to persons, use only a sealed nickel
cadmium or lead-acid battery supply capable of handling a charge current of 0.45 A,
a charge voltage of –56 VDC and a discharge rate of 45 Ah.”
The DS 616 provides for connection of an external battery plant (i.e. to provide
–48VDC to power the system). The SPSU1 provides -56VDC at 0.4 amperes charging
current (i.e. when AC power is present) which allows for float charging from the DS 616
to emergency backup batteries. The DS 616 can also run without AC power on a –
48VDC battery system or rectifier. There should be no more than a -0.5VDC drop in
voltage from the DS 616 and the batteries. Ensure polarity prior to connecting the
external –48VDC power source to the system.
The -48VDC cable assembly has a male 2 pin connector on the SPSU1. Insert this end
of the DC cable into the battery (BATT) connector found on the SPSU1
. Attach the other end of the DC power cable to the –48VDC power source.
WARNING
: Be sure the proper polarity is observed. Equipment damage will result if
polarity is reversed. Do not connect external AC or DC power to the System
Section 4 Power Up Procedures).
CAUTION
: Danger of explosion if battery is incorrectly replaced. Replace only with
the same or equivalent type recommended by the manufacturer. Dispose of used
batteries according to the manufacturer’s instructions.
2.7 EXTERNAL BATTERY CONNECTION
A socket is provided on the KSU for connection of an external battery for system during
AC power failure. The DS 616 system is equipped with a battery charging and a
discharging circuit to interface with an external battery.
The capacity of a backup battery must be 48 volts and should be rated at greater than
6AH and less than 26AH. The DCSBBU backup battery is rated at 7AH.
To connect an external battery use the connection plug and cable supplied, and
connect the RED wire lead of the cable to the positive (+) terminal of the battery and
the BLACK wire lead to the negative (–) terminal. The plug should be inserted into the
socket in the power supply.
Note that the actual connection should be done as final step in the installation process.
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