Document reference MAMPS-HW/E HARDWARE MANUAL
Edition 18 - March 2022 VM600 machinery protection system (MPS)
14 - 9
Detecting problems in the VM600 MPS rack
MAINTENANCE AND TROUBLESHOOTING
It is important to capture all of this information, because some of it can disappear once the
MPC4 card has been removed from the rack. Note that some information found in
Read System Status is coded in hexadecimal and should be recorded as such.
If an intermittent problem is seen, it is recommended to:
1- Read the registers using the Communications > From MPC > Read Status Latch
Data command and record the values.
2- Clear the registers using the Communications > To MPC > Clear Status Latch Data
command.
3- Leave the system running for some time.
4- Read the registers using the Communications > From MPC > Read Status Latch
Data command and compare the values obtained with the values recorded in step 1.
The same values and errors should be found if the problem is reproducible.
(2) Replacing the card
The MPC4 can be hot swapped, therefore it is not necessary to switch off (or disconnect) the
rack power before replacing this type of card.
If the VM600 rack contains a CPUM card, the configuration for slot nn will be downloaded
from the CPUM to the new MPC4 card once it has been installed in slot nn.
While the configuration is being downloaded into the new MPC4, the card’s DIAG/STATUS
indicator will blink green. It will become green (continuous) once the configuration process
has been completed (see 4.9 Operation of LEDs on MPC4 panel).
(3) Checking the card after replacement
Once the new card has been configured, it is advisable to check its status using the VM600
MPSx software. Follow the same steps as described above in (1) Before replacing a card.
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