Using A Supplementary Power Supply To Power Additional Keypads - ADEMCO VISTA-32FB Installation And Setup Manual

VISTA-32FB Installation and Set-Up Guide
3. Run field wiring from the control to the keypads (using standard 4-conductor cable of the
wire gauge determined in step 1).
4. If only one keypad is being used, it may be connected to either Keypad Port 1 or 2, and
must be mounted on, or within 3 ft. of, the cabinet. If multiple keypads are being used,
connect one to Keypad Port 2 and mount it on, or within 3 ft. of, the cabinet. Set the main
keypad to an address of 00. (This address cannot be disabled in programming.)
Additional keypads can be mounted where desired, and must be connected to Keypad Port
1 terminals (11, 12, 13, 14), as shown in Figure 5-1. The keypad on Port 2 is electrically
isolated from those on Port 1 and will continue to function even if wiring problems prevent
the other keypads from working properly.

Using a Supplementary Power Supply to Power Additional Keypads

The control provides 1 amp of auxiliary standby power for powering keypads and other
devices from the auxiliary power output. Aside from this, the control can support up to 16
peripheral devices (keypads, RF receivers, relay modules, etc.). The backup battery will
supply power to these devices in the event that AC power is lost. A 1-amp load requires a
34.4 AH battery (see Section 19: Final Power-Up Procedure for more information).
When the control's auxiliary power load for all devices exceeds 1 amp, additional keypads can
be powered from a regulated, 12VDC power supply (e.g., Alarm-Saf Model AS/PS5-BFS-12-
UL). Use a UL Listed, battery-backed supply for UL installations.
Connect the additional keypads as shown in Figure 5-2, using the keypad wire colors shown.
Be sure to observe the current ratings for the power supply used.
•
Make connections directly to the screw terminals as shown in Figure 5-2 . Make no connection
to the keypad blue wire (if it is present).
•
Be sure to connect the negative (–) terminal on the power supply unit to terminal 12 (AUX – )
on the control.
5–2
RED
11
BLACK
12
GREEN
13
YELLOW
14
CONTROL
TERMINALS
Figure 5-1: Keypad Connections to Keypad Port 1
KEYPADS