4
vacon • 14 Layout and connections
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
4.2 LED Indications
Figure 2. Option board LED indicators
The table below lists possible LED combinations and their meanings. When the EtherNet/IP is
active, the option board follows CIP standard for LED indications. Therefore, the indications
described in Table 8 do not apply. See Chapter 9.1.4 "LED functionality".
Table 8. List of possible LED combinations
ALED indications
LED combinations Description
No power. All LEDs are OFF.
Option board firmware is corrupted or its software is missing.
ER is blinking (0.25s ON / 0.25s OFF)
Option board failure. Option board is not operational. BS is red
and ER is possibly blinking (2.5s ON / 2.5s OFF)
Option board is operational.
Protocol is ready for communications. RN is blinking (2.5s ON /
2.5s OFF).
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