Compatibility

The following component configurations are compatible with the GS2 Rate Controller. See Main Harness (37-Pin Connector) Table at the end of the manual for additional pin out information.

Maximum Number of Implement Sections

Section Valves

• Section Valves with 3 wire SPST (Single Pole Single Throw)

  A 3-Wire valve is considered a valve with a solenoid-like operation. There is one signal wire controlling operation of the valve. When the signal wire is high (12 V), the valve is opened. When the signal wire is low (0 V), the valve closes. This can sometimes be referred to as a single pole single throw (SPST) valve. There may be configurations where a valve with this operation only has two wires, a signal wire and a ground wire.

• Section valves with 2 wire DPDT (Double Pole Double Throw). Not Compatible on NH3 systems.

  A 2-Wire valve is considered a valve with reversing capabilities. This valve needs two outputs to control its operation. When the (+) signal wire is high (12 V) and the (-) signal wire is low (0 V), the valve opens. Likewise, when the (-) signal wire is high (12 V) and the (+) signal wire is low (0 V), the valve closes. When both signal wires are low (0 V), the valve does not move. This type of valve can sometimes be referred to as a double pole double throw (DPDT) valve.

• Section Valves that require less than 2.5 amp of current

Section Valve Supplemental Information

IMPORTANT: Valve power and valve ground pins are not reverse-voltage protected. Precautions should be taken to prevent them from being connected backwards or the GS2 Rate Controller may be damaged.

3 Wire SPST Section Valves

• Valve power and valve ground must be used for all section valves. If valve power and valve ground are not connected, section valves will not open or close.
• Section valves must be evenly split among available valve power and valve ground pins to disperse electrical load evenly through those terminals.

Sections

• Sprayers and Liquid Fertilizer

  The number of implement sections the GS2 Rate Controller can control depends on:

  • Section valve type
  • Agitator
  • Fence row nozzles (optional for pull-behind sprayer and self-propelled sprayer ONLY)

• NH3 (Anhydrous Ammonia)
  • 1 to 10 section(s) available for NH3 applications.

	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 Valves

• 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 systems, it is recommended that an external pump on/off switch is wired into the cab if not already present. This allows the operator to shut off the pump. Refer to the pump manufacturer’s Operator’s 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 GS2 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 power supply
• Pressure sensors that are voltage based with a range of 0V to 5V

Planter Compatibility

The GS2 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 GS2 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 Switch

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