SKF Machine Condition Indicator
How to Select the MCI’s Alarm Mode
8
SKF Machine Condition Indicator
User Manual
In percentage mode, minimum alarm levels are 7 mm/s RMS and 4 gE. Any calculated
alarm levels less then these minimum levels will be rounded up to these minimum levels.
To switch from threshold alarm mode to percentage alarm mode:
For accurate alarming, it is important that the machine is known to be in
good running condition prior to initiating percentage mode.
After activating and mounting the MCI, with the machine running at its nominal speed
and temperature:
Read key action
LED blink
sequence
change
# blinks /
seconds
Indicating
Notes
1- Apply read key
for approximately
20 seconds
Until LEDs
change to solid
GREEN
Solid
Start of alarm
mode change
During the 20 seconds, the
MCI is progressing through
its activation / alarm status
procedure
2 - Immediately
remove read key
LEDs change
to quick
GREEN
blinks
1 blink every
second
You have 4 seconds to
remove read key
3 - Immediately
reapply the read key
LEDs change
to slower
GREEN
blinks
2 blinks every
5 seconds
Lasts about
10 seconds
MCI is in %
mode and is
acquiring
baseline
readings
You have 4 seconds to
reapply read key
2 blinks every 5 seconds
indicate % alarm mode is
active
You may remove the read
key after slower blinks
commence
LEDs change
to faster
GREEN
blinks
3 blinks every
5 seconds
Lasts about
20 seconds
Baseline
readings are
acquired
LEDs change
to solid
GREEN
Solid
Lasts about
10 seconds
Procedure is
complete
If the MCI fails to establish the baseline levels, the LEDs blink amber 3 times every 5
seconds for a twenty second duration - and the MCI returns to threshold mode.
If the amber LEDs display, confirm that the machine is running at its nominal speed
and temperature before trying to place it in percentage mode again. If the MCI still
cannot establish a baseline (typically due to fluctuating conditions), you should use
your SKF Microlog Analyzer to determine the cause. If you cannot determine a
cause, contact your SKF representative for assistance.