DMP Electronics XR10A User Manual
Installation
XR6A/XR10A/XR20A Installation Guide
2841 E. Industrial Drive Springfield, MO USA 65802-6310 800-641-4282
Digital Monitoring Products
Secondary Power Supply
6.1
Battery terminals 3 and 4
Connect the black battery lead to terminal 4 on the panel and to the negative terminal of the battery. The negative
terminal connects to the enclosure ground internally through the XR6A/XR10A/XR20A circuit board. Connect the
red battery lead to terminal 3 on the panel and to the positive terminal of the battery. Observe polarity when
connecting the battery. The panel can charge up to two batteries.
terminal connects to the enclosure ground internally through the XR6A/XR10A/XR20A circuit board. Connect the
red battery lead to terminal 3 on the panel and to the positive terminal of the battery. Observe polarity when
connecting the battery. The panel can charge up to two batteries.
Use sealed lead-acid batteries only: Use the DMP Model 367, 12 VDC 7.0Ah sealed lead-acid rechargeable
battery. Batteries supplied by DMP or manufactured by Eagle Picher or Yuasa have been tested to ensure proper
charging with DMP products.
battery. Batteries supplied by DMP or manufactured by Eagle Picher or Yuasa have been tested to ensure proper
charging with DMP products.
GEL CELL BATTERIES CANNOT BE USED WITH THE XR6A/XR10A/XR20A PANEL.
6.2
Earth ground
Terminal 4 of the XR6A/XR10A/XR20A panel must be connected to earth ground using 14 gauge or larger wire to
provide proper transient suppression. DMP recommends connecting to a metal cold water pipe or ground rod
only. Do not connect to electrical conduit or a telephone company ground.
provide proper transient suppression. DMP recommends connecting to a metal cold water pipe or ground rod
only. Do not connect to electrical conduit or a telephone company ground.
6.3
Replacement period
DMP recommends the battery be replaced every 3 to 5 years under normal use.
6.4
Discharge/recharge
The XR6A/XR10A/XR20A battery charging circuit float charges at 13.9 VDC at a maximum current of 1.2 Amps
using a 40VA transformer. The total current available is reduced by the combined auxiliary current draw from
terminals 7, 11, and 25. The various battery voltage levels are listed below:
using a 40VA transformer. The total current available is reduced by the combined auxiliary current draw from
terminals 7, 11, and 25. The various battery voltage levels are listed below:
Battery Trouble:
Below 11.9 VDC
Battery Restored:
Above 12.6 VDC
6.5
Battery supervision
The XR6A/XR10A/XR20A tests the battery once every hour when AC power is present. The test lasts for five
seconds. A load is placed on the battery and if its voltage falls below 11.9 VDC a low battery is detected. If AC
power has failed, a low battery is detected any time the battery voltage falls below 11.9 VDC.
seconds. A load is placed on the battery and if its voltage falls below 11.9 VDC a low battery is detected. If AC
power has failed, a low battery is detected any time the battery voltage falls below 11.9 VDC.
If a low battery is detected with AC power present, the test is repeated every two minutes until the battery
charges above 12.6 VDC; the battery restored voltage. If a faulty battery is replaced with a fully charged battery,
the restored battery will not be detected until the next two minute test is done.
charges above 12.6 VDC; the battery restored voltage. If a faulty battery is replaced with a fully charged battery,
the restored battery will not be detected until the next two minute test is done.
6.6
XR6A/XR10A/XR20A power requirements
During AC power failure, the panel and all auxiliary devices connected draw their power from the battery. All
devices must be taken into consideration when calculating the battery standby capacity. On the following page is
a list of the power requirements of the XR6A/XR10A/XR20A panel. Add the additional current draw of Security
Command keypads, smoke detector output, and any other auxiliary devices used in the system for the total
current required. The total is then multiplied by the total number of standby hours required to arrive at the total
Ampere/hours required.
devices must be taken into consideration when calculating the battery standby capacity. On the following page is
a list of the power requirements of the XR6A/XR10A/XR20A panel. Add the additional current draw of Security
Command keypads, smoke detector output, and any other auxiliary devices used in the system for the total
current required. The total is then multiplied by the total number of standby hours required to arrive at the total
Ampere/hours required.
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