Digital Monitoring Products 1912XR Guide d'installation télécharger pdf (Page 9)

1912XR Installation Guide

Digital Monitoring Products, Inc. 1912XR Installation Guide

Page 9

Primary Power Supply

6.1 AC terminals 1 and 2

Connect the transformer wires to terminals 1 and 2 on the panel. Use no more than 70 ft of 16 gauge, or 40

ft of 18 gauge, wire between the transformer and the 1912XR.

Always ground the panel before applying power to any devices:

The 1912XR must be properly

grounded before connecting any devices or applying power to the panel. Proper grounding protects against

Electrostatic Discharge (ESD) that can damage system components. See Earth ground.

6.2 Transformer types

The standard transformer for the 1912XR is 16.5 VAC 40VA, which provides up to 600mA of auxiliary

current. Refer to the 1912XR Wiring Diagram (LT-0182) on the panel enclosure door for a list of optional

transformers. The total current available is limited by the total battery standby requirements.

The transformer must be connected to a 120 VAC 60 Hz commercial power outlet that is not controlled by a

wall switch. Never share the transformer output with any other equipment.

The Model 320 or 322 wire-in transformers are required for NFPA 72 applications.

Secondary Power Supply

7.1 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 1912XR 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.

You can add a second battery in parallel using the DMP Model 318 Dual Battery Harness.

Use sealed lead-acid batteries

only:

Use the DMP Model 367, 12 VDC 6.5Ah 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.

GEL CELL BATTERIES CANNOT BE USED WITH THE 1912XR PANEL.

7.2 Earth ground

Terminal 4 of the 1912XR panel must be connected to earth ground using 14 gauge or larger wire to

provide proper transient suppression. DMP recommends connecting to a cold water pipe or ground rod

only. Do not connect to electrical conduit or a telephone company ground.

7.3 Battery only restart

When powering up the 1912XR panel without AC power, it's necessary to short across the CR23 leads to

pull in the battery cutoff relay. The leads need a momentary short only. Once the relay has pulled in, the

battery voltage holds it in that condition. If the 1912XR panel is powered up with an AC transformer, the

battery cutoff relay is pulled in automatically.

7.4 Replacement period

DMP recommends the battery be replaced every 3 to 5 years under normal use.

7.5 Discharge/recharge

The 1912XR 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 12. The various battery voltage levels are listed below:

Battery Trouble: Below 11.9 VDC

Battery Cutoff: Below 10.2 VDC

Battery Restored: Above 12.6 VDC

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 35 36

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Digital Monitoring Products 1912XR Guide d'installation Page 9

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