Gearshift Setup

Gear Position Order

0: N123456

1: RN123456

2: 1N23456

This settings allows the ECU can determine the correct shift and half-shift sequence

Option 1: RN123456.

In some transmissions neutral is located half-way between R and 1st. To allow Neutral to be selected, the “Half-Shift” setting should be enabled.

NOTES:

** 1st -> Neutral will require a Half-Shift. (Downshift Solenoid will be modulated)

** Reverse -> Neutral will require a Half-Shift (Upshift Solenoid will be modulated)

** Neutral to reverse Half-Shift is not required as reverse gear is located at the end of the shift drum.

Option 2: 1N23456

In this configuration neutral is located half-way between 1st and 2nd. To allow Neutral to be selected, the “1st -> N Half-Shift” setting should be enabled.

NOTES:

** 1st -> Neutral will require a Half-Shift (Upshift Solenoid will be modulated)

** N -> 1st upshift request, the ECU will activate the downshift solenoid

** Neutral to 1st Half-Shift is not required as 1st gear is located at the end of the shift drum.

Gear Position Tracking

0: OFF

1: RPM/Speed Ratio

2: Gear Detection Voltage 2

3: InputShaft /Output Shaft Speed Ratio

Gearshift tracking feature helps reduce transmission damage by cross referencing two independent Gear positions at the start of a gearshift. The ECU uses the Main and Tracking Gear Positions to achieve this.

It is HIGHLY recommended to use this feature.

1) Main/Primary Gear Position: The Gear Position Voltage 1 Input channel is used.

2) Tracking Gear Position: This is selectable under this setting.

When the Main and Tracking Gear positions don’t match the actual Gear Position cannot be determined with absolute certainty. This can be caused by a sensor entering a Fault condition or an absolute tracking error.

To prevent transmission damage the following precautions are used:

1) The ECU requires the clutch to be depressed before a shift can occur. The ECU checks this condition by looking at the Clutch Switch Status or Clutch Pressure. The ECU will NOT upshift or downshift until the clutch is depressed.

2) The Gearshift runs in open-loop mode. The gearshift time is calculated from the “Fault Mode Cut Time” table and does not use the “next gear stable” strategy.

3) Rev-matching is disabled.

In the event the Main Gear position enters a Fault condition, the Tracking Gear position will be loaded as the main Gear Position.

NOTE: Gear Position Gear Tracking is always locked out in the following gears : R, N, 1st

Gear Tracking Clutch Pressure Threshold

When a Gear Position tracking error occurs the clutch pressure MUST exceed this setting before the ECU will allow a downshift or upshift.

NOTE: Clutch Pressure or Clutch Switch can be used but MUST be configured.

1st -> N Half-Shift Enable

0: OFF

1: ON

1) Neutral Gear Ordering RN12345 - Neutral placed half-way between R and 1st.

This setting allows the ECU to “Half-Shift” when selecting 1st -> Neutral. It does this by appling a PWM signal to the downshift solenoid with a user adjustable duty cycle and ramp rate

2) Neutral Gear Ordering 1N2345 - Neutral placed half-way between 1st and 2nd.

This setting allows the ECU to “Half-Shift” when selecting 1st -> Neutral. It does this by appling a PWM signal to the upshift solenoid with a user adjustable duty cycle and ramp rate

1st -> N Half-Shift Start Duty Cycle

Start Duty Cycle in Half Shift Mode applied to the gear solenoid. The solenoid used will depend on the Gear Position Order.

NOTE: The “Next Gear Timeout” can be overwritten in Half-Shift Mode by holding the Downshift Paddle. For a maximum of 2 seconds the Half-Shift mode will operate until the paddle is released. The Half-shift mode will switch OFF when next stable is reached overriding any paddle input.

Freq fixed at 20Hz

Typical Value = 50 %DC

Resolution 2.0%

1st -> N Half-Shift Ramp Rate

The Duty Cycle will be increased by this amount per cycle.

Typical Value = 4 %DC

Resolution 2.0%

Example:

Half-Shift Start Duty Cycle = 50.0%

Half-Shift Ramp Rate = 6.0%

1st PWM Pulse = 50% DC

2nd PWM Pulse =56% DC

3rd PWM Pulse = 62% DC

The PWM will be switched OFF when the next gear has been detected or when the paddle is released.

Maximum Time limited to 2 seconds.

1st -> N Half-Shift Max Duty Cycle

Maximum duty cycle allowed on the solenoid during Half-Shift operation.

Resolution 2.0%

1st -> N Half-Shift Duty Cycle - Opposite

Fixed Duty Cycle to be used on the opposing gearshift solenoid. This can be used as a “brake” and help prevent over rotation of the shift drum. This PWM runs in-phase with the “1st -> N: Half-Shift Start Duty Cycle” PWM signal.

0 = OFF

Typical Value = 10 %DC

Resolution 2.0%

Rev -> N Half-Shift Enable

0: OFF

1: ON

1) Neutral Gear Ordering RN12345 - Neutral placed half-way between R and 1st.

This setting allows the ECU to “Half-Shift” when selecting Reverse -> Neutral. It does this by appling a 20Hz PWM signal to the upshift solenoid with a user adjustable duty cycle and ramp rate.

Rev -> N Half-Shift Start Duty Cycle

Start Duty Cycle in Half Shift Mode applied to the gear solenoid. The solenoid used will depend on the Gear Position Order.

Freq fixed at 20Hz

Typical Value = 50 %DC

Resolution 2.0%

Rev -> N Half-Shift Ramp Rate

The Duty Cycle will be increased by this amount per cycle.

Typical Value = 4 %DC

Resolution 2.0%

Example:

Half-Shift Start Duty Cycle = 50.0%

Half-Shift Ramp Rate = 6.0%

1st PWM Pulse = 50% DC

2nd PWM Pulse =56% DC

3rd PWM Pulse = 62% DC

The PWM will be switched OFF when the next gear has been detected or when the paddle is released.

Maximum Time limited to 2 seconds.

Rev -> N Half-Shift Max Duty Cycle

Maximum duty cycle allowed on the solenoid during Half-Shift operation.

Resolution 2.0%

Rev -> N Half-Shift Duty Cycle - Opposite

Fixed Duty Cycle to be used on the opposing gearshift solenoid. This can be used as a “brake” and help prevent over rotation of the shift drum. This PWM runs in-phase with the “Rev -> N: Half-Shift Start Duty Cycle” PWM signal.

0 = OFF

Typical Value = 10 %DC

Resolution 2.0%