Winco DPG-2145-001 - Manual (Page 46)

Manual 36526F DPG-21XX-00X Digital Controllers
Woodward 38
Chapter 7.
Diagnostics & Troubleshooting
LED Indications
LED
STATE
MEANING
Off
Controller is either not currently powered, or is being reverse
powered. (Check polarity of supplied power.) If correctly
powered, then controller is malfunctioning.
Blinking Slow
(1/2 Hz)
Controller is powered, but not sensing a speed signal. OK if
engine is not running. If the engine is running, then this
indicates a fault with the speed signal.
Blinking Fast
(1 ½ Hz)
Controller is powered and an engine speed signal is being
detected. If the engine is not running, then this indicates
electrical noise on the speed signal wires.
ON and Not
Blinking
Controller is powered and is malfunctioning. Replace controller.
Troubleshooting Table
SYMPTOM REMEDY
LED Display Does Not Light
Up When Controller Is
Powered
BAT + and BAT – leads are reversed. Check wiring.
Battery voltage too low. Should measure between 9 –30 Vdc.
Controller is defective. Replace it.
Unable to Modify Parameters
The parameter’s value is the maximum value allowed.
The parameter’s value is the minimum value allowed.
Universal PST not communicating with the controller.
Keypad failure, replace unit.
Engine Does Not Start
Actuator leads not connected or shorted.
No fuel source. Turn on fuel source.
Battery voltage is low. Charge or replace the battery.
Set speed is lower than crank speed. Increase the set speed.
Startup Rate setting is too low. The target speed ramps up
too slow.
Startup Limit is too low, limiting the actuator drive signal too
much.
Is the MPU speed signal present? It should read 2.0 VRMS
minimum. Adjust magnetic pickup (MPU) gap. Try reversing
the MPU leads.
If a speed signal is present, measure actuator output duty
cycle. If not greater than 5%, then restore all parameter
values to factory default settings and crank the engine again.
Final target speed must be greater than crank speed before
the controller will attempt to drive the actuator open.
Engine Overspeeds at Startup
Increase the Proportional value.
Increase the appropriate Gain value.
Decrease the Startup Ramp Rate.