396-3053Y1 SureFire Tower 100 for NutriSphere®-N NH3 for Pro 700 37 Revised 04/13/2016
Setup and Troubleshooting the Pro 700 AccuControl Liquid PWM System
(aka Intellivew IV Intellirate)
Note to SureFire people: The Default speed setting that works on our test stand does not work when the tractor is not
moving when the Pro 700 is plugged into a tractor that has Radar, Wheel, or GPS speed capability. This makes testing
the system in a Run mode impossible without driving the tractor. Use the method below, instead. On our test stand, set
the Default Speed to 0 (Toolbox > AccuCtrl > Default Speed > 0) before doing this.
To test the Pro 700 AccuControl on initial startup and in a troubleshooting situation, use the Liquid Cal mode.
(Work Condition > Liquid Cal)
1. Set up the Toolbox > AccuControl configuration page so all AccuControl items are set.
2. Set up the Work Condition > Valve Cal > Advanced Calibration screen to match the settings shown in the manual for
Tower (3/3/2016 manual or later) or PumpRight systems. The Valve Calibration procedure is likely to give results
that will not work. It may be fairly good except for an Upper Integrator Limit that is too low, or it may have totally
unworkable numbers in Dead Zone and other fields.
3. Set the Flow Error Timeout (on page 2 of the Valve Calibration setup) to 45
sec. This will let the system run for a while before it shuts down if it is not
detecting flow.
4. Go to Work Condition > Liquid Cal
5. If the Prime button does not show up here:
Home > Toolbox > AccuControl > Imp Config > Setup > Scroll down >
Liquid Prime > Enabled. (Pressing the Prime button will run the pump
for 10 seconds. To keep the pump running, press and hold the Prime button.)
6. To run the system from here with a simulated speed and target rate:
Liquid Op Mode > On Master Control > Apply > Next
7. Enter a Simulated Speed and Target Rate (these can be changed while
running in this mode to test other speeds or rates). Press Next.
8. Press Start to start the pump. System should run at Simulated Speed and
Target Rate. Measured Output should
count up as product is pumped. To see
actual flow in gpm, you need to set up
a Layout for the Left Area with Liq Flw
Rt Scn. This is very useful when
diagnosing pump or system issues. It
needs to be in the Left Area so you
can see it while running in this mode.
(Remember, when testing with water,
the pressure will be much less than it
will be with a fertilizer product. If the
pressure is too low, all the rows may not flow because there may not be
enough pressure to open all the check valves. Increase the rate until all rows
are flowing.)
9. If the pump does not run here, perform the other troubleshooting tests for hydraulic or electric pumps. You can start
the system here and use a voltmeter to verify that there is PWM voltage at the EPD or hydraulic valve. (If it is not
reading flow, it will quickly ramp up to maximum pump speed and shut off, giving a “Motor Stalled” error message.
To make this happen more slowly, set the Integral Gain to 0.1 to allow time for diagnostic observation.)
10. If the pump runs and liquid is flowing but no flow is showing in the Liq Flw Rt Scn box, check for 12 v at the
flowmeter connection (pins B & C) and do a tap test (pins A & C) to see if flow will register on the display (see note in
#9 about setting Integral Gain).
11. If the pump runs, but is surging, lower the Integral Gain. If it is pumping, but getting to rate very slowly, raise this.
12. If the system has section valves, they should open when this test is started. If they don’t open, check the
AccuControl Configuration setup (Toolbox > AccuControl > Section Control > Setup {should have green checkmarks,
Control Polarity is Active On}). Check Section Sw Box Setup > Config Mode > Auto (should say Run Screen in upper
right corner). Set up a Run Screen layout with Clutch Control 2X2 to have section switches on the display. Be sure
Boundary Control and Overlap Control are ON (Toolbox > Overlap). If they still don’t open, check for constant
voltage (pins A&B) and signal voltage (pins B&C) at valve.