8 - 16 VM600 MPS hardware manual (standard version) MAMPS-HW/E
Edition 17 - February 2018
Installation procedure for cards
INSTALLATION
8.4.2.6 Hot swapping MPC4 and AMC8 cards, and the IRC4 card
8.4.2.6.1 General remarks on MPC4 / IOC4T and AMC8 / IOC8T card pairs, and the IRC4 card
The configuration of an MPC4 card and its associated IOC4T, an AMC8 card and its
associated IOC8T or an IRC4 card is specific to a given slot in the rack. It depends on the
type of transducer and signal conditioner connected, as well as the desired signal routing to
other cards (for example, for the control of relays on an RLC16 card).
The MPC4 and AMC8 cards each contain a flash memory that is used to store the
configuration for a given slot in the rack. The memory also contains the intended slot for the
card (for example, slot nn).
8.4.2.6.2 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.
See 8.4.2.6.4 Reading the configuration of a card for further information.
8.4.2.6.3 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.
Problems can occur if an MPC4 / IOC4T, AMC8 / IOC8T or IRC4 card
configured for slot mm is installed in slot nn. Hardware damage can occur
either to the card itself or to transducers and/or signal conditioners in the
measuring chain.
To avoid damage occurring when swapping these cards, carefully read
8.4.2.6.2 Cards in a stand-alone rack and 8.4.2.6.3 Cards in a networked
rack.
In general, careless “hot swapping" of IOC4T, IOC8T or IRC4 cards can lead
to measurement errors or incorrect functioning of relays.
As stated in 8.4.2.6.1 General remarks on MPC4 / IOC4T and AMC8 / IOC8T
card pairs, and the IRC4 card, hardware damage can occur if a card
intended for slot mm is inserted in slot nn.
Because of this, a new 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.
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