Instructions for Bouncing Semaphore Controller
Electrical set up
The Bouncing Semaphore Controller is powered from 12 Volts DC. There are screw terminals for these connections which are labelled + and 0. To change the signal arm between the clear and danger positions an on/off switch is wired to the board. This connects terminals S and 0. The servo motor has a short electrical lead with a connector which pushes onto a three way plug on the Bouncing Semaphore Controller.
Mechanical set up
The Servo motor is usually mounted beneath the base board. We have a bracket which can be used to secure it into position. A small hole is required in the baseboard for the wire linkage. When first powered up the servo motor arm will be near its mid-position. The motor arm can move nearly 90 degrees either side of this. You will get more precision in setting the signal arm movement by fixing the wire to an inner hole on the servo arm. If you use an outer hole the amount of rotation will be less and play in the linkage will be more significant.
Push button adjustments
With the on/off switch in its open position (ie terminal S disconnected from terminal 0 lever towards A) the adjust1 and adjust2 push buttons are used to move the signal arm to its danger (horizontal) position. These pushbuttons move the signal arm slowly. One moving it upwards and the other downwards.
When the adjustment to danger is achieved the on off switch is closed (ie terminal O is connected to terminal S lever to position B) The Bouncing Semaphore Controller will now remember the danger setting of the signal and the adjust1 and adjust2 push buttons are used to move the signal to its clear position. Returning the on off switch to its open position will cause the Bouncing Semaphore Controller to remember the clear position in its memory. Note the memory remembers the settings when power is switched off.
The signal will now move between danger and clear positions when the on off switch is thrown.
The speed of the arms movement as it travels from danger to clear is now adjusted with the raise speed pushbutton. Each time this push button is pressed the speed increases. Eight different speeds can be selected. On reaching the eighth (fastest) speed the next press of the push button returns the speed to the slowest setting. Above the pushbutton is a red LED. This gives a series of flashes from one to eight corresponding to the speed.The fall speed push button adjusts the speed the signal returns from clear to danger in the same way as the raise speed button. The green LED gives an indication of the speed setting.
The bounce push button gives an adjustment of the amount of bounce of the signal arm when it returns to danger. In the first setting there is no bounce and each subsequent press of the push button increases the amount of bounce. The bounce increases in 1/32nds of the amount of movement between clear and danger. The current setting is shown by the number of yellow LED flashes.
The overshoot push button adjusts the amount the signal arm passes the clear position when the signal arm moves from danger to clear. The overshoot is switched off in the first setting. subsequent settings increase the amount of overshoot. The setting is shown by the number of flashes of the blue LED above it. All these settings once made are remembered when power is switched off.
Resetting to Mid Position
In the event of becoming confused you can reset the servo motor to its mid position. This is simply done by holding down the raise speed button until it resets. This takes about 5 seconds.
Servo Motors
There are two types of servo motor, analogue and digital. This is not related to model railway control systems but to the internal workings of the servo motor. Both types work with the Bouncing Semaphore Controller but the analogue type jitters (the servos arm makes a rapid movement and may travel beyond the normal settings for the signal) on power up whilst its internal circuitry settles down. The digital type of servo do not have this problem and so these are the type we now stock.
Automating Bouncing Semaphore Controller controlled signals
If you wish the signals to change automatically when trains approach and pass this can be done in several ways. You can position an IRDOT-3D before the signal and when the train reaches this the signal will change to clear and the IRDOT-3D will begin timing. When the timing ends the signal will return to danger. The IRDOT-3D uses its contacts to operate the Bouncing Semaphore Controller in the same way as the on off switch. The IRDASC-2 or IRDASC-3 boards can also be similarly connected. Aternatively the Bouncing Semaphore Controller could be operated by contacts on points or point motors so that the signal changes to danger when the point is set against the path of the train.
Power supply
The Bouncing Semaphore Controller is powered from 12 Volts DC.
Heathcote Electronics, 1 Haydock Close, Cheadle, Staffordshire, England, ST10 1UE
Telephone and Fax 01538 756800,
web site