Control Valves and Sensors

IMPORTANT: For pulse width modulation (PWM) and PWM close control valve systems, it is recommended that an external solution pump on-off switch is wired into the cab. This allows the operator to shut off the solution pump. Solution pump damage could occur if it is run without solution in it.

When the master switch is shut off on a PWM control valve system, it closes the section on-off valve(s) and stops product flow. The PWM valve remains at its current position, which allows hydraulic flow to continue to the solution pump and allows the solution pump to continue running. An external solution pump on-off switch allows the operator to shut off the solution pump.

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.

(Reference solution pump manufacturer Operator’s Manual for more information.)

	NH3	Liquid Fertilizer	Sprayers	Spreaders	Air Carts and Generic
Standard	X	X	X
Fast	X	X	X
Fast Close	X	X	X		X
PWM		X	X	X
PWM Close		X	X	X	X
Raven AccuFlow HP™ Plus	X

John Deere Rate Controller 2000 is compatible with:

• Standard, fast, fast close, PWM, and PWM close type valves.
• Valves that require 12 V to open.
• Valves that require less than 2.5 A.

Flow Control Valve Types

• Standard control valves are used in dual-valve systems 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. Once on-off valve is reopened, the standard control valve should need little to no adjustment, assuming the target flow rate has not changed dramatically.

• Fast close control valves are used in single-valve systems. Due to its quick response time, the fast close valve eliminates the need for an additional on-off valve. The fast close valve serves as the rate control valve and also completely closes 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 are used in dual-valve systems 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. Once on-off valve is reopened, the fast control valve should need little to no adjustment, assuming the target flow rate has not changed dramatically.

• PWM control valves are used in dual-valve systems in conjunction with an on-off valve. The on-off valve closes to stop flow and the PWM valve remains in its current position. Once on-off valve is reopened, the PWM valve should need little to no adjustment, assuming the target flow has not changed dramatically.

• 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 close valve serves as the rate control valve and also completely closes when it is necessary to stop product 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. The only difference is how the John Deere Rate Controller 2000 controls them.

Rate Sensors (Flowmeters and RPM Sensors)

• Rate Sensors with square wave signal type.
• Rate Sensors that require 5 V or 12 V power supply.

Pressure Sensors

NOTE: Select custom sensor if pressure sensor has 0 V output when no pressure is present. Otherwise, No Sensor Detected warning is displayed when pressure reading is zero.

• Pressure sensors that are voltage-based with an output voltage range of 0.5 V to 5 V.
• Pressure sensors that require 5 V or 12 V power supply.

Bin Level Sensors (required for bin chaining)

A bin level switch alerts operator when the bin is low. The optical switch senses the presence or absence of product in the bin. When the bin level switch output voltage is low, product is absent and the bin is nearly empty.

NH3 Boost Pump Compatibility

John Deere Rate Controller 2000 can control an anhydrous boost pump that is included with a Raven AccuFlow HP™ Plus cooler.

(Reference Specifications section for wiring and pin out information.)