Document reference MAMPS-HW/E HARDWARE MANUAL
Edition 18 - March 2022 VM600 machinery protection system (MPS)
5-15
Operation of LEDs on AMC8 panel
AMC8 / IOC8T CARD PAIR
5.11.2 Individual status indicator LEDs for measurement channels
Table 5-2 provides detailed information on the behaviour of the AMC8 status indicator LEDs
for the eight individual measurement channels.
NOTE: In Table 5-2, events are presented in decreasing order of priority for an
AMC8 / IOC8T card pair (that is, “Off” has the highest priority).
Table 5-2: Behaviour of status indicator LEDs for individual measurement channels
Behaviour of
measurement channel
status LED
Event(s)
Off
Channel is not configured
or
AMC8 configuration is not running
Green blinking
Signal input to the channel is not valid
(either the lower or the upper “OK Level” has been exceeded)
Green blinking slowly
(approximately once per
second)
The channel inhibit function is activated for the channel
Red (continuous)
Note: Applies to single-channel processing only.
For Danger level alarms configured as not latched: indicates that
a signal is below the lower Danger level (D−) or above the upper
Danger level (D+). That is, there is a currently active processing alarm.
For Danger level alarms configured as latched: indicates that
a signal was below the lower Danger level (D−) or above the upper
Danger level (D+) and was latched but has not yet been reset, or that a
signal is below the lower Danger level or above the upper Danger level.
That is, either there was a previously active processing alarm that has
not been reset or there is a currently active processing alarm.
Yellow (continuous)
Note: Applies to single-channel processing only.
For Alert level alarms configured as not latched: indicates that
a signal is below the lower Alert level (A−) or above the upper
Alert level (A+). That is, there is a currently active processing alarm.
For Alert level alarms configured as latched: indicates that
a signal was below the lower Alert level (A−) or above the upper
Alert level (A+) and was latched but has not yet been reset, or that a
signal is below the lower Alert level or above the upper Alert level.
That is, either there was a previously active processing alarm that has
not been reset or there is a currently active processing alarm.
Green (continuous)
Normal channel operation – channel is configured and signal input is
valid (not exceeding lower or upper “OK Levels”). That is, there are no
active single-channel processing or multi-channel processing alarms.
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