Radionics D7212 Operation And Installation Manual

Also see for D7212: Installation and troubleshooting quick reference Owner's manual Operation and installation manual Installation and troubleshooting quick reference Installation and troubleshooting quick reference

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Radionics D7212 Operation And Installation Manual Manual pdf 20 page image

D7212 Operation & Installation ManualPage 2074-06913-000-B 2/96 © 1993-1996 RadionicsBattery Supervision (Continued)When battery voltage returns to 13.7 VDC the Low Battery LED goes out. If the panel isprogrammed for power supervision, it transmits a BATTERY RESTORAL report in theModem II transmission format or RESTORAL ZN 9 report in the BFSK format. At 13.9VDC the Charging Status LED goes out.Investigate low battery reports right away: If primary (AC) power is off and thedischarge continues, the panel becomes inoperative when the battery voltage drops below10.2 VDC.Battery Charging CircuitFloat ChargeThe float voltage for the battery charging circuit is 13.9 VDC at a maximum current of 1.4Amps. Deduct any continuous load for devices connected to the panel from 1.4 Amps tofind the actual current available for charging.Load Shed Relay protects battery: During an AC power loss the battery supplies allpower to the security system. If the battery voltage falls below 10.2 volts during an ACpower loss, a “load shed” relay isolates the battery from the panel and disables the panel.Load shed protects the battery from being damaged by deep discharge. When AC powerrestores, the load shed relay resets and battery voltage is again available.Reset or power down required for shorted battery: If the D7212 determines the batteryis shorted, it uses the load shed relay to disconnect the battery. You must reset or powerdown the panel after correcting the problem to reset the load shed relay and reconnect thebattery.Reset the panel by momentarily placing the reset pin in the disable position. See Figure 3.The red Low Battery LED continues to flash until you reset the panel.A shorted battery condition is created either by a shorted cell inside the battery or by ashort on terminals 4 and 5. A shorted battery may generate WATCHDOG RESET reports.Battery Discharge/Recharge Schedule (No AC Power)Discharge CycleAC OFF AC fail report when AC fails if panel is programmed to report AC failure atoccurrence.13.9 VDC Charging float level13.8 VDC Charging Status LED on12.1 VDC Low Battery & AC fail reports if programmed; Low Battery LED on10.2 VDC Battery load shed (processing functions continue if AC is present)Recharge CycleAC ON Load shed relay resets, battery charging begins, battery trouble andAC restoral reports sent.13.7 VDC Battery restoral reports sent, Low Battery LED off13.9 VDC Charging Status LED off, battery float charged

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