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2020-08-26

GCU7 Manual

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Gear Control Unit

GCU7 Manual

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Содержание GCU7

Страница 1: ...2020 08 26 GCU7 Manual 1 Gear Control Unit GCU7 Manual...

Страница 2: ...IRMWARE 5 IV GAUGES OVERVIEW 6 V GENERAL SENSORS 7 VI H PADDLE SHIFTER ACTUATORS SETUP 11 VII H PADDLE SHIFTER ACTUATORS SETUP ADVANCED 13 VIII UP 14 IX DOWN 18 X CLUTCH 21 XI MISC LOGGING 25 XII SEQU...

Страница 3: ...ake car will start moving II CONNECTING TO THE GCU GCU7 uses CAN BUS to connect to the computer so special interface is needed GCU Interface uses FTDI drivers which are usually already installed by de...

Страница 4: ...2020 08 26 GCU7 Manual 4 Remove the two screws Insert a jumper Please note all GCU interfaces come with jumpers installed so if you re connecting to the existing CAN BUS you need to remove the jumper...

Страница 5: ...to a file let s call this file before dat Open upgrade window click open and select firmware bin file that matches the version of the software Click connect to device and turn the device off and on s...

Страница 6: ...ted speed under the RPM along with the calculated rpm based on the current gear THROTTLE POSITION SENSOR TPS 0 100 of the throttle pedal pressed AIR PRESSURE Air pressure in bar if air pressure transd...

Страница 7: ...gearbox with up down movement Only two valves 1 two way actuator is used in this configuration Gearbox type Type H Synchro or H Gearboxes H Paddle is MME Motorsport actuator assembly that controls 8...

Страница 8: ...TPS value from CAN BUS No calibration is needed Type Integrated DBW This option is only supported in GCU versions that have 2 CAN BUS connectors and a LED indicator on top These GCU can control the D...

Страница 9: ...on sensor is only available in Sequential mode There are 3 types of Gear Position Sensor available Type Potentiometer This is standard 3 pin potentiometer found on almost every sequential gearbox When...

Страница 10: ...s switch is activated when clutch is pressed either manually or automatically For most applications Type Switch is used If switch is on when it should be off mechanically you can Invert it If switch i...

Страница 11: ...Paddle Shifter actuator region Before configuring the shift patterns make sure your Number of gears parameter is correct GENERAL SENSORS For each gear you need to set the position of each actuator Ver...

Страница 12: ...g on power on if it s in correct position either 1 2 3 or 4 depending on the number of positions This allows you to have direct shift ready when you start the car If this actuator is not locked when s...

Страница 13: ...2020 08 26 GCU7 Manual 13 VII H PADDLE SHIFTER ACTUATORS SETUP ADVANCED Here you can program the valves for each shift More info on setting up these parameters coming soon...

Страница 14: ...Sequential mode Enabled in H Paddle Shifter mode Before the shift Min between shifts the time in milliseconds allowed between shifts Typical value 150 ms Delay after cut how many milliseconds after w...

Страница 15: ...illiseconds after the gear is engaged we re still pushing in Typical value 50 ms Keep cut after shift how many milliseconds after the gear is engaged we re still cutting the power Typical value 0 ms L...

Страница 16: ...must be configured that when this happens ECU goes into the launch mode Limit the RPM Procedure to start Holding Autoshift button for more than 2 seconds activates the Launch control GCU sends active...

Страница 17: ...While TPS is over it will automatically shift up If Autoshift switch is deactivated autoshift is disabled External cut External cut enabled If enabled it allows to cut the engine via external switch...

Страница 18: ...utton must also be pressed Typical value Disabled in sequential mode Enabled in H Paddle Shifter mode Max engine RPM Specifies the maximum rpm engine is allowed to reach after a downshift Exact downsh...

Страница 19: ...o set the travel mechanically If MME TBC is used you can set custom for each gear using the Custom for each gear Typical value Enabled on a dogbox Enabled on synchro with DBW Disable blip if RPM If RP...

Страница 20: ...value 50 ms Lever return actuator one some sequential gearboxes when actuators are mounted the return spring is too soft to return the gear lever back into the position fast enough What this does is i...

Страница 21: ...n clutch engaging and it reaches X percent throttle closes in Y milliseconds This allows smooth transition of clutch throttle Duration is only available if TBC module is used Bite point duration per 1...

Страница 22: ...ration depends on how much the rpm difference between current and target gear is Example value 100ms shifting from 3rd to 2nd gear at 5000 rpm rpm rises to 7000 rpm RPM difference is 2000 rpm which me...

Страница 23: ...result Stop bite point when rpm diff if at any time rpm difference while starting is less than Stop bite point when rpm diff clutch returns to zero in Release duration at 100 throttle time Release dur...

Страница 24: ...eneral rules start with 0 1 0 1 0 P I D for both PID and PID2 if you add throttle and car is slow on starting to move and rpm gets too high P is too low and you need to increase it Do it in 0 1 steps...

Страница 25: ...KE SWITCH REVERSE SWITCH Inverted defines if ECU CUT BRAKE SWITCH is inverted Used as reverse switch if enabled EXT CUT pin is used as a reverse gear indicator and will select R gear when pressed acti...

Страница 26: ...ting 5 cylinder not in correct position 6 throttle too high 7 shift too early 8 pressure too low 9 shift from NR not allowed 10 shift from 1N not allowed 11 rpm too high 12 neutral not detected 13 clu...

Страница 27: ...pressing the output tests Please note that if you re using engine ECU to do Ignition CUT and Blip you need to connect wires G2 White black for the Ignition CUT and J2 Yellow Pink for the throttle bli...

Страница 28: ...lip and set Max blip duration to 150ms If you have MME TBC put 30 into Amount and leave the custom for each gear unchecked Set Delay before activating the valve to 10ms Set the Disable blip if RPM to...

Страница 29: ...ected inputs are working correctly In the top right corner you can see if GCU7 sees the signals Inputs to look for and UP paddle DOWN paddle Neutral Clutch Verify the Ignition CUT Blip if present outp...

Страница 30: ...able blip if RPM to 1000 for a synchromesh or 3000 for a dogbox and Close blip to 0ms If you use MME TBC you can also adjust the blip for each gear Good value for every gear to start is 30 Uncheck if...

Страница 31: ...is value is read only so the only way to see it is to load the settings from the GCU and it change Send the settings to the GCU and try releasing the brake car should start moving For more info about...

Страница 32: ...N BUS and measure resistance between CAN and CAN Existing network should have reading between 50 60 ohms while no CAN BUS should have 100 ohms with jumper inserted Please note that you need to measure...

Страница 33: ...operly Please note that GCU waits 15s after power on to turn on the compressor If the Output status in the GCU software shows Compressor is active and compressor still isn t running and air bottle is...

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