Extending Battery Life; External Power Option - Honeywell CNI4 Operating And Installation Manual

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5 Electrical Assemblies

5.1.2 Extending Battery Life

The CNI4 is designed to provide a long service life when operating from batteries. Total battery life is

influenced by two factors in the CNI4 — continuous background current and high current draw during

cellular calls. The background current can be minimized to a certain extent by using fewer pulse input

connections and using normally-open (Form-A) contacts for pulse and alarm sensing. High current draw

depends on the number and duration of cellular calls made. This can be minimized by ensuring the CNI4

has strong cellular reception (which minimizes call retries) and by limiting the number of regular

scheduled calls to a practical extent.

The battery life also depends on bluetooth advertisement interval and so it is recommended to optimize

the usage of bluetooth.

A 3 Pin connector is available on the Y-cable to connect to an external power supply. Where AC power is

readily available, as is the case at some sites, use a power adaptor to supply the necessary voltage. The

power adaptor is required to be capable of sourcing Class 2 power supply with 2A rated current, 5V to 16V

range.

To setup external power supply

1. Remove the housing of the metal conduit and route the power cable through it.

2. Connect the power cable to the 3-Pin power connector on the Pulse Accumulator Board.

3. Connect the other end of the power cable to an external power source (5 to 16 V, 2A peak current).

The output voltage from the power adaptor can be wired to the positive and GND terminals of the 3 pin

connector shown above. It may be necessary to check with a voltmeter to determine the positive and GND

wires coming from the power adaptor. Polarity of the terminal block connection will be apparent from the

wire color — Red is positive and Black is negative.

Attention:

In the event of a reverse connection, no harm will be caused to the electronics but the CNI4

will not power as expected.

Honeywell

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