2632

Possible Causes

• •Condition for which Discrete Input #12 is configured is active
• •Discrete Input #12 Active State Selection Parameter is configured incorrectly
• •Faulty switch connector(s)
• •Faulty switch unit
• •Incorrectly wired; or open circuit or short circuit in the wiring

Suggested Actions

1. 1Check the condition for which Discrete Input #12 has been configured for
2. 2Check the switch unit's connection at the plug for an adequate connection, short circuit, open circuit, or a wiring mismatch at the switch connector end
3. 3Check the wiring at J4-7 (switch input 1) and J4-8 (reference input) for an open circuit, short circuit, or a miswired condition
4. 4Inspect the switch and the harness connector pins for bent or broken pins, pushed back or expanded pins, moisture or corrosion, missing or damaged connector seals, or dirt or debris
5. 5Measure the resistance of the switch (< 10 ohms for closed; > 100 Kohms for open) and replace if reading incorrectly (shorted or open circuit)
6. 6Press the Reset button on the Operator Panel in order to clear the fault
7. 7Visually inspect the switch for proper operation, intended range of movement, and functionality; replace the switch unit if defects or physical damage are detected

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