Led Indicators - ICP DAS USA ACS-20B-MRTU User Manual

2.4 LED Indicators

There are circular red and blue led indicators on the ACS-20B/W-MRTU to show different
operating states. The meanings of these states are described in Table 2-3.
Figure 2-4: Red/Blue LED indicators of ACS-20B(W)-MRTU
Table 2-3: Red/Blue LED indicators corresponding to module status
LED
Red
Red LED ON (NC & COM contacted)
Blue
Blue LED ON (NO & COM contacted)
Red LED blinks once per 2 seconds
Red & blue LED blink 2 times per second
* The module status inverted if red and blue LEDs are inverted.
ACS-20B(W)-MRTU User Manual
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Circular LED Indicator ACS-20B(W)-MRTU Status
(*)
Standby; Toggle mode (ON)
(*)
IR sensing; Toggle mode (OFF)
Locked mode
Firmware update mode
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