54 ER3000 User Manual
10. TROUBLESHOOTING
10.1 LED Indicators
LED1
LED2
LED3
J5
J3
J4
1 2 3 4
1 2 3 4 5 6 7 8 9
10
11
12
1 2 3 4 5 6 7 8
Figure 21: LED Locations
Table 4: LED Indicators
Terminal (Top) Board
LED1, red = On continuously, if power is supplied to the ER3000.
LED2, green = On if ER3000 is sending data out, via RS485.
LED3, amber = On if ER3000 is receiving data in, via RS485.
Micro (Bottom) Board
LED1, red = blinks “heartbeat” if system is functioning properly.
Additionally, the Micro (Bottom) Board LED, LED1, bl
inks once per second,
staying on more than off, when the system is functioning properly. If this LED is
on or off continuously then the electronics are not functioning. This LED will
also blink at a different rate, twice a second, if the zero or span buttons have
been pressed too long, causing their corresponding limits to be exceeded. If a
failsafe limit has been exceeded, the LED will also blink once per second, but
will be off more than on.
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