Flow Control Valves

	NH3	Liquid Fertilizer	Sprayers
Standard	X	X	X
Fast	X	X	X
Fast Close	X	X	X
PWM		X	X
PWM Close		X	X

• Flow Control Valve types: Standard, Fast, Fast Close, PWM, and PWM Close.
• Flow Control Valves that require 12V power to open.
• Flow Control Valves that require less than 2.5 amp of current.

Flow Control Valve Types

IMPORTANT: For PWM and PWM Close Control Valve systems, it is recommended that an external solution pump on/off switch is wired into the cab, if not already present, allowing the operator to shut off the solution pump. Solution pump damage could occur if it is run without solution in it.

PWM Control Valve System: When the master switch is shut off on a PWM Control Valve System, it will close the section on/off valve(s) stopping product flow. The PWM Valve will remain at its current position allowing hydraulic flow to continue to the solution pump which will allow the solution pump to continue running. An external solution pump on/off switch will allow the operator to shut off the solution pump.

PWM Close Control Valve System: When the master switch is shut off on a PWM Close Control Valve System, it will shut off the solution pump. An external solution pump on/off switch can be more user-friendly and familiar for a sprayer operator to shut off the solution pump if the solution tank runs empty.

Refer to the solution pump manufacturer’s Operators Manual for more information.

• Standard Control Valves

  Standard control valves are used in dual-valve systems and are used in conjunction with an on/off valve. The on/off valve closes in order to stop product flow and the standard control valve remains in its current position. Upon the re-opening of the on/off valve, the standard control valve should need little to no adjustment, assuming the target flow rate has not changed dramatically.

• Fast Close Control Valves

  Fast Close control valves are used in single-valve systems. Due to its quick response time, a fast close valve eliminates the need for an additional on/off valve. The fast close valve serves as the rate control valve and will also completely close when it is necessary to stop product flow. To start product flow once again, the fast close valve opens and quickly ramps flow back up to achieve the target application rate.

• Fast Control Valves

  Fast control valves are used in dual-valve systems and are used in conjunction with an on/off valve. The on/off valve closes in order to stop product flow and the fast control valve remains in its current position. Upon re-opening the on/off valve, the fast control valve should need little to no adjustment, assuming the target flow rate has not changed dramatically.

• PWM Control Valves

  PWM Control Valves are used in dual-valve systems and are used in conjunction with an on/off valve. The on/off valve closes to stop flow and the PWM Valve remains in its current position. Upon reopening the on/off valve, the PWM Valve should need little to no adjustment, assuming the target flow has not changed dramatically.

• PWM Close Control Valves

  PWM Close Control Valves are used in single-valve systems. Due to its quick response time the PWM Close Valve eliminates the need for an additional on/off valve. The PWM valve serves as the rate control valve and will also completely close when it is necessary to completely stop flow. To start product flow once again, the PWM close valve opens and quickly ramps flow back up to achieve the target application rate.

NOTE: Fast and Fast Close or PWM and PWM Close Valves are physically the same with the only difference being how the GreenStar Rate Controller controls them.

Flowmeters

• Flowmeters requiring 5V or 12V power supply.
• Flowmeters with square wave signal type.

Flowmeter Supplemental Information

• For a Flowmeter requiring a 5V power supply, use power provided through the pin labeled Flowmeter #1 5vdc.
• For a Flowmeter requiring a 12V power supply, use power provided through the pin labeled ECU Power.

Pressure Sensors

• Pressure sensors requiring 5V or 12V power supply
• Pressure sensors that are voltage based with an output voltage range of 0V to 5V

Planter Compatibility

The GreenStar Rate Controller can communicate with SeedStar controllers to control engagement of hydraulic variable rate motors on the following John Deere planter configurations:

• John Deere planters with Hydraulic Variable Rate Motors will have 2 to 4 sections available.
• John Deere planters with Non-CAN based frame control.

The GreenStar Rate Controller can control engagement of electric clutches or solenoids on the following ground drive configurations:

• Planters with individual row clutches (Tru Count) will have 1 to 16 sections available.
• Planters with Non-CAN based frame control.
• Planters with existing ½, ⅓, or ¼ electric disconnect clutches will have 2 to 4 sections available dependent on the disconnect sections.

Implement Height Switch

• An implement height switch is REQUIRED for NH3 and planter applications.
• An implement height switch is OPTIONAL for liquid fertilizer applications.