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

I.S. DI 16-Channel Card LEDs

The following table describes the LEDs for the I.S. DI 16-channel card.

Table: I.S. DI 16-Channel 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 problem. 1. Check supply power and connections.
2. Internal fault. 2. Contact technical support.
Red - Error Off On (continuous) 1. Controller is not scanning card. 1. Check controller operation.
2. Unit failed self-test. 2. Contact technical support.
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.
Yellow - Ch.1-Ch.16
  • On = input > detection level.
  • Off = input < detection level.

See specifications in Appendix C for detection levels for each card type.

Flashing Line fault detected. Check field wiring.
Running light from Channel 1 - Channel 16 with Red Error On. No terminal block installed or incorrect terminal block used. Make sure that the correct terminal block is installed.
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