Overview: Bosch Security Systems D113 Battery Lead Supervision Module provides supervision of the battery lead connection between the module and one or two batteries in a 12 VDC system. The D113 meets NFPA 72 requirements for Battery Lead Supervision for Fire Alarm Panels.
Issue
When is a D113 module needed?
Solution
When a fire panel is using more than 1 backup battery for back up power and or when using more than 1 battery and battery supervision is required or wanted for the system.
Note: August 2001 Release Notes
Affects: D113 Installation Manual (P/N: 74-07468-000-B) Avoid Short Circuits - Short circuits on the charger wiring between the D113 and the control panel will damage the D113 module. To prevent damage to the module or panel, and possible personal injury, avoid shorting any control panel battery wiring.
Battery Fault Signaling - There are two ways that the D113 signals a fault condition: with the supervisory output connected to the zone input of a panel and through the charger wires from the panel. As long as the D113 module is properly receiving power to operate, it will indicate faults using the supervisory output. If the D113 loses power (for example, batteries are connected backwards), the supervisory output may restore and be replaced by a battery fault that is detected through the charger leads. A restoral on the zone input, which is replaced by a control panel battery fault, indicates total failure of the battery system.
Part numbers D7212B, D9112B, D7212B1, D9112B1, D7212, D7412, D9112, D9124, D9412, D7212G, D7412G, D7412G, D9124G, D9412G, D7212GV2, D7412GV2, D7412GV2, D9124GV2, D9412GV2, D7212GV3, D7412GV3,D7412GV3, D9412GV3, D7212GV4, D7412GV4, D7412GV4, D9412GV4, B8512G, B9512G
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