MASK CONDITION (DT8360ACM-SN only)
Normal Anti-Mask Condition
The sensor uses Active Infrared (AIR) technology to detect
masking. The sensor signals a mask condition when a
variety of materials and reflective objects are placed within
50mm (2 inches) in front of the sensor. To avoid false
mask alarms, follow the mounting guidelines shown in
Step
1.
Clearing an Anti-Mask Condition
When most masking materials or objects are removed, the
anti-mask condition will be cleared after several seconds.
When the cause of the anti-mask condition is any type of
spray or paint coating applied to the window, the window
must be replaced before the anti-mask condition can be
cleared. After replacing the window, perform a walk-test on
the sensor.
TROUBLESHOOTING
TROUBLE*
NORMAL
Low
Self-Test
Mask
1
2
3
Voltage
Failure
Red LED
Off
Off
Off
Flashing
Yellow LED
Off
Flashing
Off
Off
*TROUBLE CONDITIONS:
1.
Mask condition: Sensor IR window is blocked or
masked.
Low Voltage: The sensor is disabled. Note: If voltage
2.
drops below 5V, both Alarm and Trouble relays open.
3.
Self-Test Failure conditions:
• Microwave supervision failure: The sensor is
operating in PIR mode only.
• PIR self-test failure: The sensor is disabled.
• Temperature compensation failure: The
temperature compensation is disabled.
Depending on the Trouble condition, take the following
corrective actions:
•
Verify the sensor is not blocked or masked.
•
Verify the power supply is sufficient (at least 9V at the
sensor).
•
Cycle power to the sensor.
•
Walk test
the sensor.
If the Trouble condition does not clear, replace the sensor.
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