ABB DTCC901B DCC2390A 3EST49-116 Control the mainboard

Feedback 2 Range Fault: The voltage on the LVDT/RVDT 2A or 2B inputs has exceeded the normal voltage range by the Feedback Range Threshold value. The normal voltage range is determined during calibration. For example, suppose that the voltage on the LVDT/RVDT 2A input changed from 2 volts to 6 volts during the calibration procedure, and Feedback Range Threshold is 0.3 V. A Feedback 2 Range fault will occur if the voltage on the LVDT/RVDT 2A input is less than 1.7 V or greater than 6.3 V. SPC Service Tool Annunciation: Alarm-Feedback 2 Range Fault

Driver Over current Fault: The actual driver current exceeds the commanded driver current by more than 20 % of the full-scale current. SPC Service Tool Annunciation: SD-Driver Over Current Fault

Feedback Fault

 Feedback alarms have occurred which indicate that there is no valid position feedback. If there is a single position feedback device, this fault is indicates that one or more feedback-related faults (Feedback 1 Open Fault, Feedback 1 Range Fault, Position 1 Range Fault, Excitation Fault) are true. If there are two position feedback devices, this fault indicates that there are feedback-related faults on both feedback devices. SPC Service Tool Annunciation: Shutdown-Feedback Fault

Feedback Tracking Fault 2

: The difference between Position 1 and Position 2 exceeds the Tracking Fault 2 Threshold for longer than the Tracking Fault 2 Delay time. SPC Service Tool Annunciation: When configured as an alarm: Alarm-Feedback Tracking Fault 2 When configured as a shutdown: SD- Feedback Tracking Fault 2 POS_ERR_AL: Position Error Fault 1: The difference between Position Demand and Position Feedback exceeds the position error Fault 1 Threshold for longer than the Fault 1 Delay time. SPC Service Tool Annunciation: Alarm-Position Error Fault 1

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