ABB DDC779BE01 3BHE006805R0001 Main controller accessory board

Description

Pressing and holding the stop/reset switch provides no additional func

tionality over pressing and releasing the switch. It will only stop the controller.

To stop the controller, press and release the stop/reset switch. To reset the con

troller, press the stop/reset switch a second time. If the controller halts due to

an error (causing the status LED to turn red), a single push of the stop/reset

switch resets the controller.

Startup

When power is applied to the controller, it does an internal

check, checks its configuration, and builds the necessary

databases.

During startup of the primary controller, the front panel LEDs

will go through the following sequence:

1. All front panel LEDs will illuminate.
2. The status LED will change from red to green.
3. Group B LEDs one through eight will go out.
4. Group A LEDs one through six will go out.

During startup of the redundant controller, the front panel

LEDs will go through the following sequence:

1. All front panel LEDs will illuminate.
2. The status LED will change from red to green.
3. All LEDs will go out.
4. Group A LED seven will illuminate red and then go out.
5. Group A LED eight will illuminate red.

If the appropriate LEDs do not illuminate, refer to Section 5 for

more details.

Details: If you need an urgent delivery order, please feel free to contact us, and we will do our best to meet your needs.
Price issue: If you find that other suppliers offer a cheaper price for the same product, we are also willing to provide you with a reference price and give you further discounts.
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Contact Person: Chen

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