HARDWARE MANUAL Document reference MAMPS-HW/E
VM600 machinery protection system (MPS) Edition 18 - March 2022
4-26
Operation of LEDs on MPC4 panel
MPC4 / IOC4T CARD PAIR
4.9 Operation of LEDs on MPC4 panel
4.9.1 Global DIAG/STATUS indicator LED for the card
This multi-function, multi-colour LED is used for the following purposes:
• To indicate normal operation.
• To indicate the activation of special functions (Trip Multiply and Danger Bypass).
• To indicate an MPC4 hardware or software failure.
Table 4-1 provides detailed information on the behaviour of the MPC4 DIAG/STATUS LED
for the card.
NOTE: In Table 4-1, events are presented in decreasing order of priority for an
MPC4 / IOC4T card pair (that is, “Red blinking” has the highest priority).
Table 4-1: Behaviour of DIAG/STATUS LED for the card
Behaviour of card
DIAG/STATUS LED
Event(s)
Red blinking
MPC4 hardware failure. This includes:
* Power supply fail
* DSP RAM, DPRAM and/or FLASH memory fail
* Acquisition watchdog fail and/or software common task fail
* Internal version incompatibility
(monitoring not running)
Red blinking
MPC4 powered up but not yet configured
(monitoring not running)
Yellow blinking
Configuration error or IOC4T slot number mismatch
(monitoring not running)
Green blinking
MPC4 configured but in stabilisation phase
(monitoring not running)
Green blinking
At least one channel has an input signal error. This includes:
* Vibration input saturation error
* Vibration out of common mode range
* Speed out of limit
* Speed out of common mode range
(monitoring running)
Yellow blinking
At least one channel has an input signal error. This includes:
* Vibration out of scale
* Tracking out of range
* Track lost
* DSP overload
(monitoring running)
Red (continuous) Danger Bypass (DB) function active
Yellow (continuous) Trip Multiply (TM) function active
Green (continuous)
Normal card operation – MPC4 configuration is running correctly with
no alarms and no errors
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