fut-e.htm, updated: 20 JAN 2002
schulze elektronik gmbh


future
the new generation of speed controllers for the brushless and sensorless motor generation

Just one full year after the successful launch of the future series we have again made a ”quantum leap” forward.
During this period we have used these speed controllers and governors extensively with a vast range of motors.
At the same time we have discussed our products with competition pilots and - not least - with many motor manufacturers, and the net result is that we have gained a tremendous amount of experience in controlling these motors.

We can now supply controllers which provide nearly the same smooth control of sensorless brushless motors as is usual with sensor-controlled brushless motors and conventional brushed motors.
Until now a learning phase was required when the battery was initially connected, to set up the future to match the type of motor in use, but this has now been eliminated.

Model car drivers will appreciate this feature in particular, but model aircraft pilots will also benefit, as the motor now gives full acceleration right from the start.

Helicopter pilots will also approve of the revised regulatory characteristics of these units.
The strict speed governing ability (virtually no significant speed change due to load changes) has been retained, but an occasional problem caused by mutual interference between the two regulatory systems (gyro and speed controller) has been reduced to a minimum. This only affected particular rotational speed ranges, but now the tail boom stays steady even when the gyro’s gain is ”turned up high”.

A further innovation is the timing adjustment facility, which is now included in most future types.
This enables the user to fine-tune the characteristics of the motor to suit particular applications, and can avoid the necessity to change the motor pinion or propeller (within limits).

Another new variant has been introduced, which is a derivation of the future-25be.
The future-20Le is specially designed for the LMH 110 helicopter and similar models without collective pitch.

In terms of configuration the ‘single-storey’ future types now share the features of the slim series, i.e. they include the intelligent programming system (ips), complete with gearbox option.
This means that the integral micro-processor uses the simplest possible method to set itself to match your radio control system:
Switching on the receiver configures the controller’s stop or full-throttle point, depending on the transmitter stick position, and thereby initialises operation with or without brake as preferred.
You can now also select gearbox mode in this way.

The future is a micro-processor controlled high-performance speed governor for 3-phase brushless motors with and without speed sensors.

It is an outstanding product reflecting the latest state of technology, and offers high performance at a moderate price.

The future exploits ultra-high density integrated technology to produce a very capable unit which is particularly small and light. Only three integrated circuits (ICs) are used for the control and monitor sections, and the reduced component count makes for a smaller unit with enhanced reliability. The micro-processor has been selected to suit this application very accurately, and its high clock speed, efficient code and internal hardware support help to push the maximum motor speed limit upwards by a huge margin.

The future is only a little wider than a 2000 mAh Ni-Cd cell. The future is assembled completely from SMT components, and its overall height and maximum length are mainly determined by the generously dimensioned blocking capacitors. These capacitors are essential for safe, reliable operation and their careful positioning makes possible the unit's extremely compact format.

The future's immense performance is due to the use of intelligent control algorithms, i.e. its ability to optimise its parameters automatically by analysing and adjusting the demands on it when actually in use. This means that the control circuit adjusts itself to the momentary load situation as well as to the motor in use. If you are using a motor with speed sensors, the future by-passes them and is capable of "tickling" more power out of the motor by compensating for incorrect timing.

  • From future-35 upward: Integral motor power sockets; matching plugs included.
  • ips (intelligent programming system) allows the future to self-learn the neutral point and full-throttle point; fixed stick travel with the competition-future, programmable stick travel in special versions of the future.
  • Power-On Reset and start-up surge safeguard
  • Direction of rotation can be reversed: simply swap over two motor power cables
  • Extremely fine and accurate motor speed control
  • Ultra-high rotational speed limit
  • Brake and no-brake modes
  • Excess current and excess temperature protection
  • Motor stall protection
  • Power reduction at low voltage
  • Opto-coupler for optimum interference rejection
  • LED monitor
  • High temperature heat-shrink sleeve
  • Two-layer, triple-thickness copper tracks on circuit boards: 2 x 105 µm for low conductor losses.

    Variants

    Brushless "SPEED 400" motors are on the horizon, and our 18A and 25A miniature controllers fits best with all small motors (Astro, Aveox, Lehner...).

    Low voltage types:

    future-18be or -25be: The smallest future item. Contains a 5 V / 1.5 A BEC system. This version can only be used with 6 - 10 cells due to the limited ability of the BEC system to dissipate excess power. This controller can be configured using the ips facility.

    future-20Le or -20He: special versions for LMH 110 (future-20Le) or helicopters with constant RPM (future-20He).

    future-45bo: This controller is primarily designed for use in electric gliders or non excessive half throttle use in other models with 6 to 17 Ni-Cd / Ni-MH cells, and can be configured using the ips facility.

    future-45be: Identical to the future-45bo, but with the addition of a BEC system. This version can only be used with 6 - 12 cells due to the limited ability of the BEC system to dissipate excess power. This controller can also be configured using the ips facility.

    future-45Ko: The controller for longer durating half throttle as used in sport models, aerobatic models or ducted fan models. Battery range 6 - 17 cells; finned heat-sink; ips. Naturally the unit is suitable for use in model boats provided that it is protected from contact with water by our water shielding conformal coating.

    future-45Ho or ...He: The controller for the use in helicopters. Extreme soft start and longer durating half throttle use. Battery range 6 - 10/17 cells (>10 cells no bec); finned heat-sink; Fixed throttle stick positions for idle and full throttle.
    AND: all futures run very efficient and cool under half throttle conditions.
    FOR THIS REASON you will have longer flight times under half throttle conditions and especially when using constant speed regulation mode.

    future-58bo: This version can be used with 7 to 17 Ni-Cd cells in any model where the capacity of the 45A version is marginal, and where the 90A type would represent a sledgehammer to crack a nut. With its improved efficiency it is also a good choice in models where cooling can be problematic. The intended applications therefore include pylon racers as well as small hotliners and small ducted-fan models. Can also be configured using the ips facility.

    future-58Co or ...Ce: This version can be used with 6 to 10 Ni-Cd cells in a 10th scale car. ips-car/boat: Learns neutral point, fixed stick range for full throttle and brake. Fixed accelleration an brake settings. reverse gear (V15 and higher). finned heat sink

    future-45Wo/ -45We/ -62Wo/ -88Wo/ -105Wo/ -35Wo/ - 55Wo: These versions can be used in a boat. Learns neutral point (full stick travel uns or half stick travel).
    Fixed stick range for full throttle. No brake. Heat sink for water cooling (except -88Wo). Splash-water resistant sealing

    future-70Po and -88Po: Especially designed for 7-cell pylon racers. Leightweight, short and low.
    Six different working modes for optimal timing in combination with different motors and propellers.
    (prog-adapt-2/3 cable necessary for changing these modes).
    Can be used with 7 - 10 cells. Fixed stick travels, brake cannot be disabled.
    future-88Po for 5FD contest.

    future-88Fo: The thoroughbred speed controller for 10-cell glider competition work. Also an excellent choice for 7-cell pylon racers. Can be used with 7 - 17 cells. Fixed stick travels, brake cannot be disabled.

    future-111Fo: For those who require even more than 90 A in 10-cell competition work. Can be used with 7 - 17 cells. Fixed stick travels, brake cannot be disabled.

    High voltage types:

    future-35bo: The controller for high cell counts, for example as used in ducted-fan models. Battery range 16 - 30 cells; finned heat-sink; ips.

    future-35Ho: The controller for the use in helicopters with higher cell count. Extreme soft start and longer durating half throttle use. Opto-coupler. Battery range 16-30 cells; finned heat-sink; Fixed throttle stick positions for idle and full throttle. constant rpm or use as a normal controller.

    future-55bo: The high-current controller for high cell numbers. Battery range 16 - 30 cells; finned heat-sink; ips.

    future-55Wo: The high-current controller for high cell numbers. Battery range 16 - 30 cells; tubed heat-sink; ips-car/boat.

    future-80Fo: The thoroughbred controller for 27-cell competition gliders. Recommended for motor runs > totally 50 sec with 27 x 1000 cells, or motor runs > totally 60 sec with 26 x 1250 cells. Runtime is limited for 5 seconds followed by 15 seconds pause. Battery range 16 - 28 cells; fixed stick travels; brake cannot be disabled; heat-sink; 72 FETs.
    future-102Fo: Similar to the future-80Fo, but for lower cell counts and higher currents: 18*RC2400, 19*RC2000 oder 24*CP1700 cells.

    Highlights common to all units:

    Ultra-small, ultra-light units. A crucial point for all modellers who require maximum performance combined with minimum weight.
    Better than 250-step resolution over the whole control range for extremely fine speed control.
    Controllers work reliably right down to the last scrap of energy in the battery pack.
    “Auto-arm” function and “power on reset”.
    “ips” (intelligent programming system) with no pots! The speed controller automatically configures itself every time to the stick travel when you switch your receiver on respectively you connect your battery pack. The brake can also be disabled in the same way if required.
    “ips” also includes a special setup variant for geared motor systems. Fixed stick travel between braking point and full-throttle point, softstart for throttle and brake. It is normally essential to apply full-throttle at the start of the flight. This variant only learns one stick position (brake point) when in use. Fine-tuning the system to match the transmitter’s stick travel is still possible, but must be done by adjusting the travel at the transmitter.
    During the configuration process the motor acts as a loudspeaker to give you audible confirmation of the procedure.

    Specifications:

      Throttle-Type
    pv programmable variable (softstart) with push button or PC (flysoft/carsoft)
    pt programmable variable (minimum, softstart) with push button or PC (flysoft/carsoft)
    g long soft-start (for gear)
    n normal soft-start
    m short soft-start (medium)
    k very short soft-start
    h helicopter-specific: very soft smooth start; soft rpm-changes
    very quick constant speed regulation

      Brake-Type
    ss switch function (short "soft"start)
    sn switch function (normal), can be switched off
    sg softswitch function with very smooth start (for belt-gear), can be switched off
    p/r proportional brake / reverse gear
    p/- no brake in boat mode / proportional brake in car mode (ips car/boat)
    ps programmable, different switch functions (strength) with push button or PC (flysoft/carsoft)
    pb programmierbare Proportionalbremse (min/max) über Taste/PC
    pp programmable proportional brake functions (softstart) with key or PC (flysoft/carsoft)
    g proportional reverse current brake = reverse gear
    - no brake

    The RPM limitation is specified for a 4-pole motor (... P4).
    For other number of poles use following multiplication factor for the RPM: P2= *2; P4= *1; P6= *0,67; P8= *0,5; P10= *0,4.
    Type
    [Unit]    		 Current
    [A]    		 NiCd-
    [Cells]    		 Size
    [mm]    		Weight
    [g]    		 Cable
    [mm2]    		Throttle
    [mO]    		 Swit-
    ching
    freq.
    [kHz]    		 Throt
    -tle
    [Type]    		 Brake
    [mO]    		 Brake
    [Type]    		 BEC
    [V/A peak]    		 Umin-
    Pro-
    tect.    		 RPM limit P4 Usage Comment
    Aircraft common
    future-18be 18/24 6-10 50*25*10 16-21 1,5 6,5+7 9 n/g 6,5/3 sn/sg BEC 5V/1,5A 5V63000 Plane -
    future-25be 25/33 6-10 50*25*12 18-23 1,5 4+4,7 9 n/g 4/3 sn/sg BEC 5V/1,5A 5V63000 Plane -
    future-45bo 45/60 6-17 74*24*12 25-35 2,5 2,2*2 9,19,38 n/g 2,2/3 sn/sg opto-coupler 5V63000 Plane -
    future-45be 45/60 6-12 74*24*17 30-42 2,5 2,2*2 9,19,38 n/g 2,2/3 sn/sg BEC 5V/3A 5V63000 Plane -
    future-45Ko 45/60 6-17 74*24*14 28-38 2,5 2,2*2 9,19,38 n/g 2,2/3 sn/sg opto-coupler 5V63000 Sport, aero-
    batic     		Long duration half throttle
    future-58bo 58/77 7-17 74*24*12 25-35 2,5 1,4*2 9,19,38 n/g 1,4/3 sn/sg opto-coupler 5V63000 Plane small hotliners
    future-35bo 35/45 16-30 81*24*14 29-39 2,5 4,0*2 9,19,38 n/g 4,0/3 sn/sg opto-coupler 12V63000 Plane Ducted fans
    future-55bo 55/70 16-30 81*24*19 40-50 2,5 2,0*2 9,19,38 n/g 2,0/3 sn/sg opto-coupler 12V63000 Plane Ducted fans, big gliders
    Type
    [Unit]    		 Current
    [A]    		 NiCd-
    [Cells]    		 Size
    [mm]    		Weight
    [g]    		 Cable
    [mm2]    		Throttle
    [mO]    		 Swit-
    ching
    freq.
    [kHz]    		 Throt
    -tle
    [Type]    		 Brake
    [mO]    		 Brake
    [Type]    		 BEC
    [V/A peak]    		 Umin-
    Pro-
    tect.    		 RPM limit P4 Usage Comment
    FAI- contest
    future-88Fo 88/130 7-17 74*24*14 27-44 4,0 0,7*2 19 k 0,7/3 ss opto-coupler 5V120000 F5D, F5B 7/10 cells
    future-111Fo 111/1487-17 74*24*16 33-50 4,0 0,7*2 19 k 0,7/3 ss opto-coupler 5V120000 F5B10 cells
    future-80Fo 80/110 16-28 81*24*19 38-50 2,5 2,0*2 19 k 2,0/3 ss opto-coupler 12V120000F5B 27 cells
    future-102Fo 102/136 16-24 81*24*19 37-57 4,0 0,8*2 19 k 0,8/3 ss opto-coupler 12V120000F5B 18-24 cells
    Pylon
    future-70Po 70/120 7-10 69*24*10 21-31 2,5 1,4*2 19 k 1,4/3 sn/sg opto-coupler 5V84000 Plane Pylonracer
    future-88Po 88/130 7-10 69*24*11 24-41 4,0 0,7*2 19 k 0,7/3 sn/sg opto-coupler 5V84000 Plane F5D contest
    Type
    [Unit]    		 Current
    [A]    		 NiCd-
    [Cells]    		 Size
    [mm]    		Weight
    [g]    		 Cable
    [mm2]    		Throttle
    [mO]    		 Swit-
    ching
    freq.
    [kHz]    		 Throt
    -tle
    [Type]    		 Brake
    [mO]    		 Brake
    [Type]    		 BEC
    [V/A peak]    		 Umin-
    Pro-
    tect.    		 RPM limit P4 Usage Comment
    Heli- copter
    future-18Le 18/24 6-8 50*25*10 16-21 1,5 6,5+7 9 m - - BEC 5V/1,5A 5V63000 Hornet -
    future-18He 18/24 6-8 50*25*10 16-21 1,5 6,5+7 9 h - - BEC 5V/1,5A 5V63000 Piccolo with collec-
    tive pitch
    future-20Le 20/33 6-10 50*25*12 18-23 1,5 4+4,7 9 m - - BEC 5V/1,5A 5V63000 LMH 110controller
    future-20He 20/33 6-8 50*25*14 20-25 1,5 6*2 9 h - - BEC 5V/1,5A 5V63000 Heli controller & governor
    future-45Ho 45/60 6-17 74*24*14 28-38 2,5 2,2*2 9,19,38 h - - opto-coupler 5V63000 Heli controller & governor
    future-45He 45/60 6-10 74*24*17 32-44 2,5 2,2*2 9,19,38 h - - BEC 5V/3A 5V63000 Heli controller & governor
    future-35Ho 35/45 16-30 81*24*14 29-39 2,5 4,0*2 10 h - - opto-coupler 12V63000 Heli controller & governor
    Type
    [Unit]    		 Current
    [A]    		 NiCd-
    [Cells]    		 Size
    [mm]    		Weight
    [g]    		 Cable
    [mm2]    		Throttle
    [mO]    		 Swit-
    ching
    freq.
    [kHz]    		 Throt
    -tle
    [Type]    		 Brake
    [mO]    		 Brake
    [Type]    		 BEC
    [V/A peak]    		 Umin-
    Pro-
    tect.    		 RPM limit P4 Usage Comment
    Car
    future-58Co 58/77 6-10 69*24*18 36-46 2,5 1,4*2 9,19 k 1,4/3 p/r opto-coupler 5V63000 Car 1:10
    future-58Ce 58/77 6-10 69*24*21 43-55 2,5 1,4*2 9,19 k 1,4/3 p/r BEC 5,7V/3A 5V63000 Car 1:10
    future-88Co 88/130 6-10 69*24*18 36-53 4,0 0,7*2 9,19 k 0,7/3 p/r opto-coupler 5V63000 Car 1:10
    future-88Ce 88/130 6-10 69*24*21 43-62 4,0 0,7*2 9,19 k 0,7/3 p/r BEC 5,7V/3A 5V63000 Car 1:10
    future-102Co102/136 16-2481*24*31 56-73 4,0 0,8*2 9,19 k 0,8/3 p/r opto-coupler 5V63000 Car 1:10
    Type
    [Unit]    		 Current
    [A]    		 NiCd-
    [Cells]    		 Size
    [mm]    		Weight
    [g]    		 Cable
    [mm2]    		Throttle
    [mO]    		 Swit-
    ching
    freq.
    [kHz]    		 Throt
    -tle
    [Type]    		 Brake
    [mO]    		 Brake
    [Type]    		 BEC
    [V/A peak]    		 Umin-
    Pro-
    tect.    		 RPM limit P4 Usage Comment
    Boat (Water)
    future-45Wo 56/65 6-17 74*24*18 44-54 2,5 2,2*2 9 k - - opto-coupler 5V63000 Boat splash water protection
    future-45We 56/65 6-12 74*24*24 46-58 2,5 2,2*2 9 k - - BEC 5V/3A 5V63000 Boat splash water protection
    future-62Wo 62/82 7-22 74*24*18 44-54 2,5 1,5*2 9 k - - opto-coupler 5V63000 Boat splash water protection
    future-88Wo 88/130 7-17 74*24*14 29-46 4,0 0,7*2 9 k - - opto-coupler 5V63000 Boat splash water protection
    future-105Wo 105/130 7-17 74*24*18 41-58 4,0 0,7*2 9 k - - opto-coupler 5V63000 Boat splash water protection
    future-157Wo 157/209 7-17 74*24*16 33-50 4,0 0,3*2 9 k - - opto-coupler 5V63000 Boot spritzwasser-
    geschützt
    future-35Wo 42/50 16-30 81*24*18 41-51 2,5 4,0*2 9 k - - opto-coupler 12V63000 Boat splash water protection
    future-55Wo 65/80 16-30 81*24*23 53-63 2,5 2,0*2 9 k - - opto-coupler 12V63000 Boat splash water protection
    future-102Wo 102/13616-2481*24*16 40-57 4,0 0,8*2 9 k - - opto-coupler 12V63000 Boot spritzwasser-
    geschützt

    future-18be, future-20Le, future-25be
    future-18be/ -20Le/ -25be     		future-20He
    future-20He

    future-45bo/ -88Fo/ -88Wo
    future-45bo     		future-45Ko, future-45Ho
    future-45Ko/Ho

    future-45bo/ -88Fo/ -88Wo side view
    future-45bo     		future-70Po/ -88Po side view
    future-70Po/-88Po

    future-58Ce/ -88Ce (...Co)
    future-58Ce/Co     		future-102Co
    future-102Co

    future-111Fo
    future-111Fo     		future-55bo/ -80Fo /-102Fo
    future-55_o

    future-45Wo/ -62Wo/ -105Wo
    future-45Wo     		future-55Wo
    future-55Wo



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