Owner's Manual

10
Power, Battery, & Ground Wiring
Power Wiring
✦ NOTE: DO NOT APPLY POWER UNTIL THE INSTALLATION IS
COMPLETE. TURN MASTER POWER SWITCH OFF BEFORE
WIRING.
1. Route two wires between the AM-3 and the power transformer.
• For power wire runs up to 100 feet, use 18 AWG, 600-volt
insulated wire.
• For power wire runs up to 200 feet, use 16 AWG, 600-volt
insulated wire.
2. Connect the wires to the transformer. Connect the other end of the
wires to the AM-3 AC1 & AC2 terminals.
Backup Battery
Use of battery backup is optional. It will allow the AM-3 to operate for
short periods of time without AC power. The door or gate access device
must use some type of battery backup of its own for the entire system to
be functional.
Use a 12-volt gel-cell type battery. Up to a 7-amp/hr battery will fi t into the
AM-3 cabinet. Do not use a 6-volt battery.
✦ NOTE: A backup battery is not required to maintain the AM -3
clock/calendar and programming memory during power outages.
1. Route two battery leads between the AM-3 and the backup battery.
2. Connect the Battery positive to the AM-3 BAT+ terminal and the
negative to the BAT- terminal.
✦ NOTE: The AM-3 supplies battery charging current. An external
battery charger is not required to maintain the battery.
Earth Ground
For the best ground, use size 12 gauge solid wire or larger to connect the
to an 8-foot copper ground rod. Locate the ground rod next to the Power
and Telephone company rods and bond the rods together with a new
clamp. Do not disturb the clamps installed by the Power or Telephone
Company. Alternately, connect to a metalic cold water pipe for the earth
ground.
1. Connect the wire from the earth ground to the AM-3’s EARTH
GROUND terminal.
217977 A IMAGE 10
16 VAC
20 VA
TRANSFORMER
POWER
TERMINALS
AC-DC AC-DC
NOTE: THE AM-3
WILL SUPPLY CHARGING
CURRENT FOR THE
BACKUP BATTERY
BAT BAT
BATTERY
TERMINALS
12 VOLT
BATTERY
EARTH
GROUND
STAKE
EARTH GROUND
TERMINALS
GND. GND.