Sensaphone® ISACC Instruction Manual

GROUNDING ISACC

ISACC should be earth grounded by connecting a true earth ground to the terminal labeled EG. This is not essential for ISACC to operate, but this will help protect against the possible effects of lightning strikes in or around the immediate area.

BACKUP BATTERY

ISACC offers the ability to wire a backup battery to the power terminal block. The backup battery can be a rechargeable or non-rechargeable 18VDC. To hook up your backup battery, wire the positive terminal of your battery to the terminal labeled BAT on ISACC and wire the negative terminal of your battery to the terminal labeled C on ISACC. See diagram below:

POWER

EG 24

24

BAT C 20V C 5 V C 12V C 5V C

AC

AC

 

Wiring a backup battery to ISACC

If you are providing ISACC with rechargeable backup batteries, the board must be configured so that ISACC knows to recharge the batteries.

When the battery is configured for recharge, ISACC supplies a constant charge of 20.4 VDC, with maximum current limited to 185 mA. To recharge the battery backup, go to the SIP header at location P11 on the PC board. (P11 is located between the power supply terminal block and the ON-OFF switch.) Using needlenose pliers, move the shunt to the recharge position. See diagram next page:

RECHARGE

NC

P11

Battery configured for recharge

LITHIUM BATTERY

The lithium battery provides backup to the RAM and to the real-time clock. To activate the battery, pull the paper strip out of the battery clip. The lithium battery is a CR2430, 3 Volts, 270 mAhr. It will provide battery backup for approximately 2 years. NOTE: The lithium battery will not keep ISACC operational. Its function is to retain the time and program if the power fails and backup battery is exhausted.

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Phonetics 5100, 5000 manual Recharge, Grounding Isacc

5000, 5100 specifications

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