Owner's Manual
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System Diagnostics
Several indicators on the AM-3 are for monitoring the system during
operation. When calling for technical assistance, Linear’s Technical
Services Department may ask the installer to use these indicators to
diagnose the system.
Indicators
15 LED indicators are on the AM-3. Refer to the fi gure for the location of
each indicator.
• POWER lights when AC or DC power is present.
• STATUS/PROGRAM DISPLAY shows supervisory and status conditions,
also used for some local programming.
• DECODE lights when a credential has been successfully decoded.
• VALIDATE lights when a credential is determined to be valid.
• ACCESS GRANTED lights when a credential is validated and access is
granted.
• PBUS blinks when any PBUS device is successively decoded.
• READER “A” fl ashes when Wiegand A device is successively decoded.
• READER “B” fl ashes when Wiegand B device is successively decoded.
• NETWORK fl ashes in response to network traffi c.
• NETWORK HOST ON-LINE lights when the Host PC is connected to the
Master Node.
• BACKUP BATTERY LOW lights when backup battery measures low.
• RELAY “A” ACTIVE lights when the Channel “A” relay is energized.
• RELAY “B” ACTIVE lights when the Channel “B” relay is energized.
• RELAY “C” ACTIVE lights when the Channel “C” relay is energized.
• RELAY “D” ACTIVE lights when the Channel “D” relay is energized.
Specifi cations
MECHANICAL
Case dimensions: 11.5” W x 12.5” H x 3.5” D
ELECTRICAL
Voltage: 16-24 Volts AC or 12-24 Volts DC
Current: 850 mA maximum @ 12 Volts DC
Backup Battery: 12 Volt DC
Outputs: Relay Channels A-D
Form “C” 3 Amps @ 30 Volts maximum
Inputs: Four normally closed door sense inputs
Four normally open request-to-exit inputs
Two WIEGAND reader inputs
Two PBUS inputs
Network: Three-wire network
ENVIRONMENTAL
Temperature: -22°F to 149°F (-30°C to 65°C)
Humidity: 5% to 95% non-condensing
POWER
STATUS/PROGRAM
DISPLAY
RELAY "A"
ACTIVE
RELAY "B"
ACTIVE
RELAY "C"
ACTIVE
RELAY "D"
ACTIVE
ACCESS
GRANTED
VALIDATE
DECODE
READER "A"
READER "B"
P-BUS
NETWORK
NETWORK
HOST
ON-LINE
BACKUP
BATTERY
LOW