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

AI 8-Channel Card LEDs

The following table describes the LEDs for the pre-Series 2 and Series 2 AI, 8-channel, 4–20 mA card; the AI, 8-channel, 4–20 mA, HART card; and the AI, 8-channel, 1-5 VDC card.

Table: AI Card LEDs
LED Correct Operating Condition Fault Indication Possible Cause Corrective Action

Green – Power

Green Power/Active

  • pre-Series 2 - On
  • Series 2 Simplex - On
  • Series 2 Redundant:
    • Active - On
    • Standby - Flashing
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 pre-Series 2 and Series 2 On (continuous) 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.
pre- Series 2 Flashing 1. Controller is not scanning card. 1. Check controller operation.
2. Address conflict. 2. Replace card with known good card of same type; contact technical support.
Redundant Series 2 Flashing 1. No bussed field power. 1. Check bussed field power and connections. Use the DeltaV Diagnostics Clear Saved Fault Information command when problem fixed.
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.
Simplex Series 2 Flashing Controller is not scanning card. Check controller operation.
Yellow - Ch.1 to Ch. 8 On Off 1. Input is out of range and channel is disabled. (See specifications in the "Interface Specifications" section.) 1. Check input source and connections.
2. No bussed field power. 2. Check bussed field power and connections.
3.Internal fault. 3. Contact technical support.
Flashing 1. Input is out of range and channel is disabled. (See specifications in the "Interface Specifications" section.) 1. Check input source and connections.
2. No bussed field power. 2. Check bussed field power and connections.
3. Channel is configured for HART, but there is no HART communication. 3. Check HART input source and connections.
4. Channel is configured for NAMUR limits and they have been exceeded. 4. Check input levels compared to NAMUR limits

Refer to the Configuration manual in Books Online or more information on troubleshooting HART devices.

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