8-channel DO card LEDs

The following table describes the LEDs on the 8-channel DO cards:

Table: 8-channel DO card LEDs
LED correct operating condition Fault indication Possible causes and corrective action
Power/Active-On (green):
  • Continuous green for active card
  • Flashing green for the standby card
Off System power is not supplied to the card due to possible line power problems. Check the power connections.
Internal fault. Contact technical support
Error-Off Red (continuous) Controller is not scanning card. Check controller operation.
Card failed self-test. Contact technical support.
Red (flashing) Controller is not scanning card. Check controller operation.
Hardware error. Replace with known good card of same type; contact technical support.
Channel 1 to Channel 8-On (yellow)

Depends on setpoint and configuration.