Power Supply; Battery; Enclosure; Suppressors - Honeywell NetAXS NX4S1 Installation Manual

NetAXS™ NX4S1 Installation
Panel Components and Descriptions

3.2 Power Supply

The NetAXS™ panel is capable of operating on AC or DC input power. UL has not
reviewed the use of a DC power supply with the NX4S1 panel. The AC input must be
supplied at 16.5 VAC utilizing one of the following UL-listed, 50 VA, Class 2
transformers: Basler Electric Model BE156250CAA0004, M&G Electronics Model
MGT1650 (Honeywell Access Systems part number X-4). Use a two-wire, 18 AWG
shielded cable to run the AC power from the wall transformer to the enclosure. The
AC voltage is non-polarized and connects to TB17-1 and TB17-2.
A power-on LED assembly is supplied with the NX4S1. It is required by UL to be
mounted for external viewing. Refer to Installation, page 9 for details. When there is
sufficient AC power, the power-on LED illuminates. If the AC power is off, the LED
is not illuminated.
DC power is also non-polarized. The panel uses 24 VDC at 1.5 Amp wired into
TB17-1 and TB17-2.
The panel includes an input power indicator that illuminates when input voltage is
present. If the indicator is not illuminated, the input voltage is either off or too low to
operate the system.
Caution:

3.3 Battery

One CASIL CA1270 12 VDC, 7 A-Hr sealed lead-acid battery (HAS part number
3-000066) provides standby backup power. When the primary power is off, the
NetAXS™ panel automatically switches to the battery for continuous operation. The
battery provides three hours of standby backup power.
The NetAXS™ panel is capable of providing 300 mA at 13.7 VDC for battery
charging. The panel has deep discharge protection built in for the protection of the
battery. If the battery discharges below 10.4 V, the panel disconnects the battery and
ceases operation.
Replace the battery every two to two-and-a-half years, or more often if the panel has a
high rate of backup use.
Refer to Installation, page 9 for battery cable connection information.

3.4 Enclosure

The NX4S1 enclosure ships pre-wired. Its width is 14.5 inches (368.3 mm), its height
is 18.0 inches (457.2 mm), and its depth is 4.4 inches (111.8 mm). The equipped
enclosure, including the 7 A-Hr battery, is 22.1 pounds (10 Kg).

3.5 Suppressors

Two suppressors (HAS part number S-4) are required for each door lock. One
suppressor is installed on the panel control board, and the second must be installed at
the door lock.
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De-energize the unit before servicing it.