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Allen Bradley 1747-L553 A-B 1747-1553 new with sealed lable

External wiring faults require corrective action in the field to repair the fault condition. Module faults require replacement of the Input Module. 5.2. Field Wiring Faults The input circuits of the Module may be used to detect field wiring faults in addition to alarm states. To achieve this, line monitoring components must be fitted to the field device. By comparing the input signal from the field with pre-configured alarm thresholds, the Module can automatically detect field wiring faults.

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