ABB AC 900F - Page 36

CI/CM PROFIBUS modules Section 3 Modules
36 M&I – AC 900F Controller
LED Color Status Meaning
PWR Green ON Module in operation and must not be removed
OFF Module not in operation and may be removed, if re-
quired
STA Green ON Active module operating properly
OFF Module start-up
Orange ON Module identified by the CPU module, but inactive
Red ON Module error
RUN Green ON Module has taken over the master function
OFF Module inactive relative to the PROFIBUS
Green 200 ms
pulse
Module ready to take over the master function
Line redundancy OFF
LED A
(line A)
Green ON Bus traffic
OFF No bus traffic
Line redundancy ON
LED A (line A) LED B (line B) LED A and B must be considered as a pair
Color Status Color Status
Green ON Green ON Data reception on both lines, A and B
OFF OFF No data reception on lines A and B
Red ON Green ON No data reception on line A, but data recep-
tion on line B
Green ON Red ON No data reception on line B, but data recep-
tion on line A