3 - 2 VM600 MPS quick start manual MAMPS-QS/E
Edition 2 - October 2018
Replacing cards
COMMON MAINTENANCE PROCEDURES
3.1.2 Cards in a stand-alone rack
NOTE: The following remarks concern stand-alone racks. These do not contain a CPUM
card are not connected to a network.
For a stand-alone rack, hardware damage can occur if a card intended for slot mm is inserted
in slot nn.
NOTE: For further information on replacing VM600 cards in a stand-alone rack, refer to the
VM600 machinery protection system (MPS) hardware manual.
3.1.3 Cards in a networked rack
NOTE: The following remarks concern networked racks. These contain a CPUM card
(and, optionally, its associated IOCN card) and are connected to a network.
For a networked rack, if a card originally used in slot mm is inserted in slot nn, the CPUM card
recognises that the card’s configuration does not match the slot.
The behaviour of the CPUM card after it detects a change of configuration for a card depends
on:
• The version of the CPUM card’s firmware.
• And for CPUM firmware version 067 or later – the setting of the CPUM’s configuration
master parameter.
NOTE: For further information on replacing VM600 cards in a networked rack, refer to the
VM600 machinery protection system (MPS) hardware manual.
Because of this, a different MPC4, AMC8 or IRC4 card must only be installed
‘live’ and without reconfiguration if its configuration is known to be
identical to that of the card previously removed.
Because of this, problems can occur if a card taken from slot nn of rack x
is inserted into slot nn of rack y, as different slots can be used for totally
different functions in each rack.
This form of hot swapping should be avoided unless you are certain that
the cards in slot nn of each rack have exactly the same configuration.
More generally, if you do not know how a card is configured, you should not
install it until the configuration is known.
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