ABB DA808-1410-50 Diagnosis detection fault

Description

Group A LEDs 1-8 display codes if a controller error occurs

during normal operation. Additionally, in redundant configu

rations, they show which controller is the primary and which

is the redundant. Group A LEDs seven and eight are on if the

controller is primary; group A LED eight is on if the controller

is redundant. If an error occurs, the status LED turns red and

the group A LEDs light up to display the error code (Table 5-1).

Group B LEDs 9-16 display the pass and fail counts when the

controller is in diagnostic mode.

Red/Green Status LED

The status LED is a red/green LED. It shows the controller

operating condition. There are four possible states.

Off

No power to the controller, or the controller is powered and

jumper J4 is installed. Jumper J4 must remain open for nor

mal operation. The status LED momentarily goes off when the

microprocessor initializes on startup.

Solid Green

The controller is in execute mode.

Flashing Green

The controller is in execute mode but there is an NVRAM

checksum error, or the controller is in the configure or error

mode.

Solid Red

The controller diagnostics have detected a hardware failure,

configuration problem, etc., and stopped the controller. Addi

tionally, the group A LEDs will illuminate in a certain

sequence to display the error code. May also indicate that the

module has been stopped by the stop/reset pushbutton.

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