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Electric Retract Sequencer

Electric Retract Sequencer for 1 Servo & 1 Electric Retract unit

The Electric Retract Sequencer allows you to control 1 servo and 1 electric retract unit in sequencer for opening the doors and for dropping the wheels in a controlled way. The speed and position of the servo arm and the servo direction are fully adjustable.

This unit differs from the standard retract sequencer in that it has a user adjustable delay between the servo and electric retract unit operation. This allows for the slow speed of electric retracts.

£21.20

Features

  • Retract “door” and retract “wheel” servos are controlled in sequence by the retract switch.
  • Door Servo endpoints (travel) can be individually set between +150% and –150%.
  • Servo reverse is available on both servo and retract.
  • The transmitter switch operating direction can be selected.
  • The apparent transit time of both servos can be set between about 1 and 16 seconds.

Instructions

It is probably best to make initial adjustments to servo direction and servo travel before fitting the servos into the model. In addition, as the door servo transit speed depends on the travel end points selected, set the travel end points before adjusting the speed.

Plug the receiver flying lead on the Retract Sequencer into the gear (retract) channel on your receiver.   Plug the “door” servo into the door connector and the “electric retract” into the wheel connector. Switch the transmitter and receiver on and switch the gear (retract) switch to your chosen “GEAR DOWN” position. The servos will move to the down position. Switch the gear (retract) switch to “GEAR UP” and note which servo moves first. The servo that moves first should be the “retract-wheel” servo. Switch the gear (retract) switch to “GEAR DOWN “ and note that the other servo moves first. The sequence is – Door down then wheels down, wheels up then door up. If the servos move in the wrong order, the transmitter switch direction must be reversed.

Transmitter Switch Direction

To reverse the transmitter switch operating direction, press the “-” key and switch the unit on. The switch direction is toggled from forward to reverse or from reversed to forward each time the operation is performed. The LED lights while the key is pressed to confirm the action and goes out when the key is released.

Electric retract Direction

To reverse the electric retract operating direction, press the “+” key and switch the unit on. The retract direction is toggled from forward to reverse or from reversed to forward each time the operation is performed. The LED lights while the key is pressed to confirm the action and goes out when the key is released.

Door Travel adjustment

The servo end point positions can be anywhere on the travel range from +150% to -150% so a separate reverse function is not needed.

Press the “+” and “-” keys simultaneously for about a second to enter the door travel set-up. The LED will flash rapidly while the keys are pressed and will light continuously when the keys are released to indicate that the door travel set-up is active. The door servo will respond to the gear (retract) switch at full speed. Move the gear (retract) switch to “GEAR UP” and use the “+” key to move the servo in one direction and the “-” key to move it in the other to give the required “GEAR UP” position. Do the same with the gear (retract) switch in the “GEAR DOWN” position. Note that the selected position can be on either side of neutral, ANYWHERE on the travel range.

To exit set-up, press the “+” and “-” keys simultaneously for about a second. The LED will flash rapidly while the keys are pressed and go out when they are released to confirm that the new settings have been stored. The servos will move to the position set by the gear (retract) switch.

DO NOT FORGET TO EXIT THE TRAVEL SETUP

Servo speed

Please note that the travel time of a “electric retracts” is fixed and cannot be controlled by an external unit. The Electric Retract Sequencer introduces a user adjustable delay that substitutes for the transit (speed) control. The “wheel” transit time should be set to be longer than the actual transit time to allow the electric retract to reach the “up” position before the “door” servo starts to move.

To enter the procedure for setting the servo transit speed, press and hold the “+” and “-” keys and then switch the receiver on. The LED will flash evenly when the keys are pressed and flash asymmetrically when they are released to confirm that the speed set-up procedure is active.

To adjust the door servo transit time (speed), press and hold the “+” key. The LED will flash up to 8 times and then pause. Count the LED flashes from the pause and release the key when the required number of flashes have been seen. A single flash will give the maximum speed and a servo transit time of about a second. More flashes will give more delay (less speed) and with 8 flashes, the servo transit time is about 16 seconds. If you accidentally go past the required number of flashes, release the key and start again. The count always starts from one when the key is pressed.

‘The pseudo wheel retract transit time (speed) is adjusted in the same way by pressing the “-” key.

To exit the speed set-up, press the “+” and “-” keys simultaneously until the LED flashes rapidly to indicate that set-up is complete. The servos will operate at the selected speed.

DO NOT FORGET TO EXIT THE SPEED SETUP

The unit remembers all settings and it is only necessary to adjust the servos initially and when making modifications.

Reset

To reset the unit to the factory defaults, plug it into an analogue channel. Switch the transmitter and receiver on and move the analogue stick from one extreme to the other while pressing the “+” key. The LED will flash as the stick passes through neutral to confirm the reset.

SAFETY

Please ensure that the set-up keys cannot be pressed accidentally while the unit is in use.

Additional Information

Dimensions 35 x 18 x 8 mm