Bay Alarm Vista-20Bay, Installation And Setup Manual

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Section 3 - Installing Remote Keypads
3–3
Keypads powered from supplies that do not have a backup battery will not function when AC
power is lost. Therefore, be sure to power at least one keypad from the control's auxiliary power
output.
Connect the additional keypads as shown in Figure 7 , 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 7 . Make no connection to the
keypad blue wire (if present).
Be sure to connect the negative (–) terminal on the Power Supply unit to terminal 4 (AUX – ) on the
control.
+
–
+
4 5 6 7
SUPPLEMENTARY
POWER SUPPLY
–
CONTROL TERMINAL STRIP
AUX. AUX. DATA
IN
DATA
OUT
IMPORTANT:
MAKE THESE
CONNECTIONS
DIRECTLY TO
SCREW
TERMINALS AS
SHOWN.
TO KEYPAD RED WIRE TO KEYPAD BLK WIRE TO KEYPAD YEL WIRE TO KEYPAD GRN WIRE TO KEYPAD BLK WIRE TO KEYPAD RED WIRE TO KEYPAD GRN WIRE TO KEYPAD YEL WIRE
Figure 7. Using a Supplementary Power Supply for Keypads
Preliminary Checkout Procedure
If you want to check that the system is working before connecting field wiring from zones and
devices, do the following:
1. Temporarily connect a 2000-ohm end-of-line resistor across each of the basic hardwire
zones 1-8, as shown in Figure 23. VISTA-20BAY Summary of Connections diagram.
Without actual zone wiring or EOL resistors connected, the keypads will not display the
READY
message.
2. Power up the system temporarily by plugging the AC transformer (previously wired to the
control) into a 120VAC outlet.
3. B u s y - Sta n db y (on alpha keypads) or dI (on fixed-word keypads) is displayed.
After approximately 1 minute*, the green READY LED (or POWER LED on some types
of keypads) light, and the word READY (on fixed-word keypads), or
DISARMED...READY TO ARM (on alpha keypads) appears, indicating that the system
is functioning properly.
* To bypass the 1-minute delay, press [#] plus [0].
If the READY display does not appear on any of the keypads in the system, or a Not
Ready message is displayed, check the keypad wiring connections, and make sure each of
the 8 basic hardwired zones has a 2000 ohm resistor connected across its terminals.
Do not remove the EOL resistors until you are ready to make connections to the
hardwired zones, to allow for testing later in the manual.
If an “OC” or “OPEN CIRCUIT” message is displayed on the keypad, data from the control is not
reaching the keypad. Check the wiring.