Class1 107490 - UNI-Governor 107396 107269 software v 6 00 - Manual (Page 35)

34
Programmable Parameters
These adjustable settings allow the governor to better match the engine/PTO/pump configuration of the
apparatus.
Press and hold the IDLE and PRESET switches, then press the MODE switch (All three depressed
simultaneously). The message center will show
-MENU-
press the MODE switch. This will scroll through the three menu options.
SET RAMP
SET SENS
SET GAIN
SET TRIM
When the option that you want to change is displayed, press the INC switch to select it.
More detailed information on the effect of these settings is available on page 21.
RPM Ramp Rate: This parameter controls how fast the governor responds to increase and
decrease switch requests. Values are 0-10 with 5 being the default.
The lower the value, the greater the response with each switch press.
Ramp XX
is displayed where XX is the current numeric value. Pressing the INC/DEC switches changes the value.
Press PRESET to save the change. Press MODE to scroll to the next parameter.
PSI Gain: This parameter controls the pressure gain or how quickly the governor controls the
engine when reacting to pressure changes. Values are 0-10 with 5 being the default. The lower the
value, the slower the response.
Gain XX
is displayed where XX is the current numeric value. Pressing the INC/DEC switches changes the value.
Press PRESET to save the change. Press MODE to scroll to the next parameter.
note; this parameter is critical to good operation. If set too high, the governor can cause an oscillation or
surging condition with high pressures resulting. If it is set too low, the governor might not respond fast
enough to pressure changes. This parameter should only be adjusted when flowing water in a ‘normal’
configuration.
PSI Sensitivity: This parameter controls the pressure sensitivity or how much the pressure
is allowed to deviate from the set point before the governor will control the engine to restore the set point
pressure. Values are 0-10 with 5 being the default. The lower the value, the tighter the pressure window
the governor will maintain.
Sense XX
is displayed where XX is the current numeric value. Pressing the INC/DEC switches changes the value.
Press PRESET to save the change. Press MODE to scroll to the next parameter.
Trim: This parameter controls how much the governor will increase engine speed in an attempt
to correct a pressure drop. It can be varied from 5% to 20% of maximum governor output.
Essentially this will limit an RPM increase to between 200 and 400 RPM above the RPM used to achieve
the pressure setpoint. If the engine is running at 1500 RPM and the trim is set to 5%, the engine speed
will increase to only around 1700 RPM. If the trim is at 20%, the RPM could increase to around 1900
RPM. The actual increases are engine dependent and the figures stated here are only approximations.
Pressing IDLE twice exits from the Menu and saves the current parameters. The message displayed is:
-DONE-
Parameter Programming
Incorrectly configured parameters can cause erratic operation, serious injury or
even death. Contact your OEM or Class1 for guidance in their configuration. ! !