Rev.01 - 06.2021 | LDD1/LDD2 Single and Dual Loop Detector | © 2021 |
CARLO GAVAZZI Industri
10
EN
5.1 Power / fault indicator LED
LED colour LED constant
LED Flashing
All OK (ASB OFF)
DIP switch changed, but changes not in effect
All OK (ASB ON)
-
Low signal indication
-
Channel crosstalk
-
-
Indication of the frequency channel
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
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
LED colour LED constant
LED Flashing
Inductance OK
-
Inductance too high
Inductance too low
Loop is open circuit
Loop is short circuit
5.3 Relay state LED
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 colour Mode
Relay deactivated
Relay activated
Presence mode
LED OFF
LED ON
Pulse mode, 0.1 s
LED OFF
LED ON for 0.5 s
Pulse mode, 0.5 s
LED OFF
LED ON for 1.0 s