Power / Fault Indicator Led; Loop State Led; Relay State Led - Allmatic A1H-U Manual De Instrucciones

5.1 Power / fault indicator LED

LED colour LED constant
All OK (ASB OFF)
All OK (ASB ON)
Low signal indication
Channel crosstalk
-
Explanation:
• Green LED (steady): Unit is powered up and everything is working well
• Green LED (flashing): Dip switch has been changed since power up, but change has not taken
effect. Please press the reset button
• Blue LED (steady): Automatic Sensitivity Boost is turned ON and everything is working well
• Yellow LED (steady): Signal level is low in the loop. It is recommended to increase sensitivity
• Red LED (steady): Crosstalk of loop frequency with another loop detected. Select different frequency
channel on DIP switches and reset product
• White LED (flashing): After start up, the number of times the LED flashes, indicates the frequency
channel selected in both manual and automatic frequency tuning mode (e.g. LED flashes two times
is equivalent to channel 2)

5.2 Loop state LED

LED colour LED constant
Inductance OK
Inductance too high
Loop is open circuit
Explanation:
• Green LED (steady): Loop inductance is within limit and working well
• Yellow LED (steady): Loop inductance is too high (more than 1000µH)
• Yellow LED (flashing): Loop inductance is too low (less than 20µH)
• Red LED (steady): Loop is open circuit
• Red LED (flashing): Loop is short circuit

5.3 Relay state LED

LED colour Mode
Presence mode
Pulse mode, 0.1 s
Pulse mode, 0.5 s
Explanation:
• Yellow LED (off): Relay is not activated
• Yellow LED (steady): Relay is activated and in presence mode
• Yellow LED (on for 0.5 s): Relay is activated and in pulse mode, 0.1 s
• Yellow LED (on for 1.0 s): Relay is activated and in pulse mode, 0.5 s
LED Flashing
DIP switch changed, but changes not in effect
-
-
-
Indication of the frequency channel
LED Flashing
-
Inductance too low
Loop is short circuit
Relay deactivated
LED OFF
LED OFF
LED OFF
Relay activated
LED ON
LED ON for 0.5 s
LED ON for 1.0 s
Rev.00 - 09.2021 | A1H-U Single Loop Detector | © 2021 | Allmatic
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