Winco DPG-2145-001 - Manual (Page 16)

Manual 36526F DPG-21XX-00X Digital Controllers
Woodward 8
3.1 No. of Flywheel Teeth or Pulses Per Revolution
(optional)
This parameter provides the conversion factor needed to display speeds as RPM
values instead of Hertz values. Adjusting this parameter is optional. The default value
of 0 disables Hertz (Hz) to RPM conversions so all set speeds are displayed in Hertz.
Setting this parameter to a value other than zero enables Hertz to RPM conversion.
DPG-21XX- 002 Models —Adjusting the No. of Flywheel
Teeth parameter is prohibited while the engine is
running.
Adjust this parameter to a value equal to the exact number of pulses seen by the
controller in one revolution of the engine to display set speeds in RPM. The formula
used to convert the speed signal from a Hertz value to a RPM value is:
     
  

EngineRPM
rev per Pulses
s Hertz


_ _
60
For example:
     
  

RPM
rev per Pulses
s Hz
1800
_ _ 132
60 3960


The following derivation of the above formula can be used to convert from RPM to
Hertz.
     
 
 
Hertz
s
rev per Pulses EngineRPM


' 60
_ _
DPG-2101-00X and DPG-2155-00X Models
To use this parameter correctly on controllers sensing engine speed with a magnetic
pickup, you must know the exact number of flywheel teeth that pass by the magnetic
pickup in one revolution of the engine.
DPG-2145-00X and DPG-2146-00X Models
To use this parameter correctly on controllers sensing engine speed via ignition pulses,
you must know the exact number of ignition pulses that occur in one revolution of the
engine.
3.2 Set Speed A (required)
This parameter is adjustable both from the controller’s DEC and INC keys and by using
the Universal PST application. However, when the value is changed using the
controller’s keypad, the value displayed by the Universal PST does not automatically
update. To refresh the value displayed on the PC the user must select a different
parameter with the mouse pointer then reselect the value of Set Speed A. The