ACS2000 User manual 2UEA001270 Rev. F 10-7 (32)
Chapter 10 - Troubleshooting and maintenance
7 Contact ABB service if the cause for the malfunctioning grounding
switch cannot be rectified.
See section General information on manual and equipment for
contact information.
10.3.5 LEDs and switches on PCBs and IOEC I/O devices
The following section provides an overview on the meaning of LEDs and
switches of the main circuit boards and IOEC I/O devices. The LEDs
presented in the following section can be checked easily while the
auxiliary voltage is switched on without having to remove covers first. The
LEDs provide information on the status of the devices and can be used for
diagnostic purposes.
10.3.5.1 AMC circuit board
Figure 10-3 AMC circuit board
Table 10-1 Function of LEDs on the AMC circuit board
LED Color Function
F red Fault, not used (ON when booting)
R green Run, always OFF
M green Not used (ON when booting)
P green Supply OK
T1 yellow ON = receiving data on DDCS channel 0
T2 yellow ON = receiving data on DDCS channel 3
S3 yellow Always OFF
S1 yellow Always OFF
S2 yellow Always OFF
S0 yellow Always OFF
Run
P
S1
Fault
M
T1
S3
S2
T2
S0
Cover removed for illustration purposes
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