How to troubleshoot Woodward Controller speed input not working?
- BBrooke BrownAug 12, 2025
If the speed input on your Woodward Controller isn't working, check the wiring and terminal block connections first. Next, use the front panel to access the Speed Input Configure Menu and ensure all configuration options are correctly selected. Make sure there aren't any alarms or faults that could indicate a setup problem, such as an open wire trip, speed lost, or speed fail. Confirm that the input signal levels meet the electrical specifications, and check the shield connections. If you're using an active probe, disconnect it and measure the voltage from terminals 69 to 71; it should be 24 V ±10%. Reattach the probe and measure again to confirm that it isn't overloading the voltage provided by the ProTech-GII.