07AC91D 07AC91F ABB Spot Warranty

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As shown in the table, the module occupies 8 analog inputs and 8 analog outputs on the CS31 system bus.

If the module is confiugured in operating mode "8 bits"

only for inputs or only for outputs, only 8 analog inputs or

8 analog outputs are used on the CS31 system bus. In

this case, not occupied input or output addresses can be

used by other modules.

If the address DIL switch No. 8 is switched to ON, all

channel numbers change by 08, i.e. address AW n,00

changes to AW n,08, etc. This applies for the address

assignments for inputs and outputs in both operation

modes.

Normal operation

• After the supply voltage was switched on, the

module initializes automatically. During initialization

process all LEDs are switched on.

• If the CS31 system bus does not (yet) run, the red

error LED will light up. If an error occurs during the

initialization process, the red error LED will also

light up.

Diagnosis and displays

The module 07 AC 91 offers the following diagnosis functions:

• Analog value is out of measuring range

• Storing this information and possibility for recall

(kind of error and location of error)

If an error occurs, the red LED lights up. The error message will be transmitted to the central unit or the

coupler.

In the central units 07 KR 91 / 07 KT 9x, the errors are

displayed as follows:

• Out of range

Error classification 4 (FK4) M 255.14

Error recognition: 10 dec. -> MW 255.08

Module type: * 01/03/05 -> MW 255.09

Group number: -> MW 255.10

Channel number: -> MW 255.11

In the initial state after initialization, channel 0 is selected

and the corresponding analog value ist displayed (see also

figures 5.4-6 and 5.4-7).