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

Fieldbus H1 Card LEDs

The following table describes the LEDs for the Fieldbus H1 and Series 2 Fieldbus H1 cards.

Table: Fieldbus H1 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.

pre-Series 2 and Series 2 Flashing

Series 2 Red:
  • Active-Flashing
  • Stby-Flashing
Incorrect terminal block for configured card type Install redundant terminal blocks for Series 2 redundant cards and simplex terminal blocks for simplex and/or pre-Series 2 cards.
Red - Error Off

pre-Series 2 and Series 2: On (continuous)

1. Controller is not scanning card. 1. Check controller operation.
2. Unit failed self-test. 2.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.
Series 2 Flashing 1. Controller is not scanning card. 1. Check controller operation.
2. Hardware error. 2. Replace card with known good card of same type; contact technical support.
Yellow - Port 1 and Port 2 On Off 1. No communications. 1. Check connections, cable and external devices.
2. Port not enabled. 2. Enable port.
3. Configuration mismatch. (Such as redundant card configured in database and simplex card installed.) 3. Fix configuration errors.
Flashing 1. Communication error on this port. 1. Check connections, cable, and external device.
2. No configuration for this port. 2. Configure port.