The following table describes the LED indicators for the Series 2 AI, 16-Channel, 4-20 mA, HART card in Simplex mode.
| LED | Correct Operating Condition | Fault Indication | Possible Cause | Corrective Action |
|---|---|---|---|---|
| Green-Power | On | Off | 1. System power is not supplied to unit. Possible line power problem | 1. Check supply power and connections. |
| 2. Internal fault. | 2. Contact technical support. | |||
| Red - Error | Off | On | 1. No bussed field power. | 1. Check bussed field power and connections. |
| 2. Controller is not scanning card. | 2. Check controller operation. | |||
| 3. Unit failed self-test. | 3. Contact technical support. | |||
| Flashing | 1. No bussed field power. | 1. Check bussed field power and connections. | ||
| 2. Controller is not scanning card. | 2. Check controller operation. | |||
| 3. Hardware error. | 3. Replace card with known good card of same type; contact technical support. |