Document reference MAMPS-HW/E HARDWARE MANUAL
Edition 18 - March 2022 VM600 machinery protection system (MPS)
4-29
Operation of LEDs on MPC4 panel
MPC4 / IOC4T CARD PAIR
4.9.3 Individual status indicator LEDs for speed channels
Table 4-3 provides detailed information on the behaviour of the MPC4 status indicator LEDs
for the two individual speed (Tacho) channels.
NOTE: In Table 4-3, events are presented in decreasing order of priority for an
MPC4 / IOC4T card pair (that is, “Off” has the highest priority).
Table 4-3: Behaviour of status indicator LEDs
for individual speed (Tacho) channels
Behaviour of
speed channel
status LED
Event(s)
Off
Channel is not configured
or
MPC4 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
Yellow (continuous)
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 processing alarms.
To Next Page
Loading...
Need help?
General