Rockwell-automation T8402 Trusted Dual 24V dc Digital Input Module - 6 Instrukcja Użytkownika Pobierz pdf (Strona 24)

Trusted

Module T8402

Issue 13 April 10 PD-T8402 24

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 16 Module Status LEDs

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 30

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Rockwell-automation T8402 Trusted Dual 24V dc Digital Input Module - 6 Instrukcja Użytkownika Strona 24