Checking Out and Troubleshooting Your DeltaV System > Checking Out Your System > Step 3. Checking the LED Indicators on Each Device

I.S. AO 8-Channel HART Card LEDs

The following table describes the LEDs for the I.S. AO 8-Channel HART card.

Table: I.S. AO 8-Channel HART Card LEDs
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 problems. 1. Check supply power and connections.
2. Internal fault. 2. Contact technical support.
Red – Error Off On (continuous) Unit failed self-test. Contact technical support.
Flashing 1. Controller is not scanning card. 1. Check controller operation.
2. Unit failed self-test. 2. Contact technical support.
3. Address conflict. 3. Replace card with known good card of same type; contact technical support.
Yellow – Ch.1 to Ch. 8 On Off 1. No output device (load). 1. Check output connections.
2. Internal fault. 2. Contact technical support.
Flashing 1. No output device (load). 1. Check output connections.
2. Internal fault. 2. Contact technical support.
3. Card is configured for HART but there is no HART communication. 3. Check HART input source and connections.