Rockwell Automation T8424 Trusted TMR 120Vac Digital Input Module - Manual (Page 25)

Trusted TM Module T8424
Issue 8 Sep 11 PD-T8424 25
5.5. SmartSlot
For a SmartSlot configuration, the secondary slot is not unique to each primary slot. Instead, a single
secondary slot is shared among many primary slots. This technique provides the highest density of
modules to be fitted in a given physical space. At the rear of the Trusted
TM Chassis, a single-wide I/O
Cable connects the secondary slot directly to the I/O Cable connected to the failed primary module.
With a spare module installed in the SmartSlot and the SmartSlot I/O Cable connected to the failed
primary module, the SmartSlot can be used to replace the failed primary module.
Input module Smart Slot jumper cable TC-306-02
Smart Slot between chassis can be performed if the chassis are version 2 (or higher). These have the
connector fitted to enable connection of a TC-006 that ensures the 0 Volt of each chassis is at the
same potential.
5.6. Cold Start
If an I/O module has shut down (due, for example, to two existing faults), the three Healthy LEDs will
be red, the Active and Standby LEDs will be flashing red and the Educated LED will be flashing
amber. The I/O functions provided by this module will have been lost if a hot swap partner has not
taken over control. The module can only be restarted by removing it from its slot and re-inserting it.
If an I/O module is inserted into a functional system slot which previously had no active module (e.g.
removing and reinserting as above), then the processor will educate the module once it has booted.
Once educated, the Educated LED will be steady green and the Active LED will be red flashing.
Input modules will now be reading and reporting their inputs. Output modules have not yet energised
their outputs. To activate outputs and to set the module’s Active LED and the processor’s System
Healthy LED steady green, press the processor Reset pushbutton.