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Using a Supplementary Power Supply to Power Additional Keypads
The control provides 750mA of auxiliary standby power for powering keypads and other
devices from the auxiliary power output. Aside from this, the control can support up to 32
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. When the control's auxiliary
power load for all devices exceeds 750mA, you can power additional keypads from a
regulated, 12VDC power supply (e.g., AD12612). The AD12612 power supplies have a backup
battery which can power these keypads in the event of AC mains power loss.
Connect additional keypads as shown below using the keypad wire colours shown. Be sure to
observe the current ratings for the power supply used.
Mounting the Keypads
1. Mount the keypads at a height that is convenient for the user. Refer to the instructions
provided with the keypad for mounting procedure.You can either surface mount or flush
mount keypads (using an appropriate Trim Ring Kit: 6139TRK). Refer to the mounting
instructions and template included with the keypad and/or trim ring kit for specific
information.
Addressing the Keypads/Preliminary Check-out 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 wired zones
1–8, as shown in the Summary of Connections diagram. Connect a jumper across the
zone 9 terminals. Without actual zone wiring or EOL resistors connected, the keypads
will not display the "Ready" message.
2.
Power up the system temporarily by connecting the AC mains.
Keypads powered from supplies which do not have a backup battery will not function
when AC mains is lost. Therefore, be sure to power at least one keypad from the
Control's auxiliary power output.
A. Make connections directly to the screw terminals as shown. Make no connection to
the keypad blue wire (if present).
B. Be sure to connect the negative (–) terminal on the Power Supply unit to terminal 7
(AUX – ) on the control.
SUPPLEMENTARY
POWER SUPPLY
+
–
R
B G Y
Figure 7: Using A Supplementary Power Supply For Keypads
The keypads will not operate until they are assigned an address and enabled in the
system's Device Programming Mode.
CONTROL
TERMINAL STRIP
AUX AUX.DATA DATA
+
–
IN
OUT
6
7
8
9
IMPORTANT:
MAKE CONNECTIONS
DIRECTLY TO SCREW
TERMINALS AS SHOWN.
MAKE NO CONNECTION
TO THE KEYPAD BLUE
WIRE (IF PRESENT).
R B G Y
– 17 –
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