Rockwell Automation T8448 Trusted TMR Zone Interface Module - 40 Channel - Manual (Page 33)

Trusted
TM
Module T8448
Issue 14 Apr 10 PD-T8448 33
4.2. Module Status LEDs
There are six module status indicators on the module front panel: three Healthy, one Active, one
Standby, and one Educated. The Healthy indicators are controlled directly by each module slice. The
Active, Standby, and Educated indicators are controlled by the FPU. The FPU receives data from
each of the module slices. The FPU performs a 2-oo-3 vote on each data bit from the slices and sets
the indicators accordingly.
The module status indicator modes and their meanings are described as follows:
INDICATOR STATE DESCRIPTION
Healthy Off No power applied to the module.
Amber Slice is in the start-up state (momentary after
installation or power-up)
Green Slice is healthy.
Red – flashing Fault present on the associated slice but the slice is
still operational.
Red (momentary) On installation – power applied to the associated
slice.
Red The associated slice is in the fatal state. A critical
fault has been detected and the slice disabled..
Active Off Module is not in the Active state.
Green Module is in the Active (or Maintain) state.
Red – flashing Module is in the shutdown state if the Standby LED is
off.
Red – flashing Module is in the fatal state if the Standby LED is also
flashing.
Standby Off Module is not in the Standby state.
Green Module is in the Standby state.
Red – flashing Module is in the fatal state. The Active LED will also
be flashing red.
Educated Off Module is not educated.
Green Module is educated.
Green – flashing Module is recognised by the Processor but education
is not complete.
Amber - Flashing Active/standby changeover in progress
Table 19 Module Status LEDs