Rockwell-automation T8431 Trusted TMR 24Vdc Analogue Input Module - 40 Instrukcja Użytkownika Pobierz pdf (Strona 25)

Trusted

Module T8431

Issue 16 Sep 11 PD-T8431 25

4.2. Module Status LEDs

There are six module status LEDs 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 LED states and their meanings are described as follows:

LED 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, or one 24V feed to

the chassis has failed.

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

Green

Green – flashing

Module is not educated.

Module is educated.

Module is recognised by the Processor but

education is not complete.

Amber - Flashing Active/standby changeover in progress

Table 17 Module Status Indicators

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 31 32 33

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Rockwell-automation T8431 Trusted TMR 24Vdc Analogue Input Module - 40 Instrukcja Użytkownika Strona 25