Rockwell Automation T80007 Application Note Smart Slot Philosophy - Manual (Page 3)

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AN-T80007 Smart Slot Philosophy
Issue 2 Feb 07 AN-T80007 3
Smart Slot Jumper cables
The Safety Manual requires that the Smart Slot jumper cables are tested before use.
The Smart Slot Jumper cables part numbers are as follows, refer to PD-TC300 for further information.
Input module Smart Slot jumper cable TC-306-02
Output module Smart Slot jumper cable TC-308-02
A Zone Interface module, that can be configured as both inputs and outputs, uses an output type smart
slot cable.
The length of the jumper cable is 2.5m, therefore it is not practical to smart slot between bays.
Spares
To maintain an available smart slot it is necessary to return a healthy module to the primary position.
This requires two types of each I/O module to be held as spares.
Operation
Smart Slot replacement (changeover) is effected by following the procedure detailed below.
Remove dust cap from the hood of the field cable at the rear of the faulty module.
Bridge the faulty module and Smart Slot positions by connecting the Smart Slot jumper connector to
the exposed ‘C’ type connector on the rear of the faulty module I/O connector.
Insert a serviceable module of the correct type, with compatible firmware and hardware, in the Smart
Slot position. The TMR Processor will verify that the module is the correct I/O module type and that
both Module Removal levers (and hence micro switches) are closed.
The TMR Processor will automatically initiate the education of the replacement module with the
appropriate data. The active module is then placed in the maintain state (which suspends field loop
testing), and any module specific changeover data is transferred. The Educated light flashes amber
before the active/standby changeover takes place, to indicate transfer of dynamic change over data
(COD).
When education is complete, the LED will adopt the steady green state, the previously active faulty
module will indicate ‘standby’ and the replacement module will indicate ‘active’. Check that the
remaining LEDs on the front panel of the replacement module are healthy.
The faulty module should be removed from the system and repaired.
To revert the system to its base configuration this procedure should be repeated in reverse. A
serviceable module should be installed in the original slot. Changeover may be initiated by opening the
ejector levers on the currently active module, i.e. the module occupying the Smart Slot, when both
Module Removal switches are opened on an active module, regardless of the module fault status, the
TMR Processor will treat it as a request to perform an active/standby changeover.
When the changeover is complete, remove the module in the Smart Slot position. Then disconnect the
Smart Slot connector. Do not remove the jumper cable before removing the Smart Slot module.
Notes
A module in the active state should never be removed.