Retract & Valve Sequencer

Retract & Valve Sequencer

Retract Sequencer

Valve Sequencer

The Retract & Valve Sequencer is an electronic unit for sequencing the operation of retracts and doors. Special features include a switch to select open doors or closed doors with retracts down, the ability to safely reverse operation mid sequence, reversing switches for the servos/valves, and two levels of servo travel. The delay between each operation is adjustable in steps of 0.5 seconds from 1 to 8.5 seconds.

The unit is ideal for scale models requiring sequenced operation of doors and retracts. Another use is as a bomb release system. Setting the unit for open doors with wheels down causes the bomb bay doors to open and bomb release after an appropriate delay. Flicking the switch back after release closes the doors.

Specifications

Size: 75 x 22 x 11 mm

Weight: 20 grams

Voltage: 4 or 5 cells, reverse polarity protected

Centre Pulse Width: 1.5 mS

Up Position Input: Greater than 1.8 mS

Down Position Input: Less than 1.2 mS

Delay Range: 1- 8.5 seconds, adjustable via a sixteen position rotary switch

Retract Sequencer Outputs: Each directly drives a servo

Valve Sequencer Outputs: 300 mA each maximum. The valve solenoid coil must include a suppressor diode

Instruction Sheet - Servo Output