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Timpdon Electronics

 

Tel    0161 - 980 7804 

Issue 2 – October 2010 

 

Web

 

www.timpdon.co.uk 

 

EMail  [email protected]  

 
 
 
 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

Features 

 

 

Controlled motion between two servo positions with a  single switch, using a 

standard RC servo. 

 

 

Fully user programmable for independent servo end positions, rotation 
speed and end of travel bounce. Programmed settings retained when power 
removed. 

 

 

Sense output at end of throw, in both directions – permits daisy chaining of 

units with sequential operation, or external indication of servo position. 

 

 

Ideal for control of crossing gates, points and semaphore signals. 

 

 

Digital microprocessor controlled. 

 

 

Small size – 50mm x 25mm x 16mm. 

 

 

4.8 V to 6 V d.c. supply. 

 

 

Screw terminals for connections to supply, control switch and sense output. 
3 pin plug for direct servo connection. 

Timpdon

 

Electronics

 

 ServoSwitch 

Model 

SCS2

 

 

Summary of Contents for SCS2

Page 1: ...nce Programmed settings retained when power removed Sense output at end of throw in both directions permits daisy chaining of units with sequential operation or external indication of servo position Ideal for control of crossing gates points and semaphore signals Digital microprocessor controlled Small size 50mm x 25mm x 16mm 4 8 V to 6 V d c supply Screw terminals for connections to supply contro...

Page 2: ...witch input terminal and the 0V supply as shown Note that the Reset position of the servo as described below corresponds to the switch open condition and the Set position to switch closed 3 The sense output will switch from 5V to 0V on completion of a Set operation and will switch back from 0V to 5V on completion of a Reset operation This output may be connected to the switch input of another SCS2...

Page 3: ...ther direction of travel program the relevant bounce level to zero bounce 3 Once the servo has reached its programmed end position and after a further 1 second delay the sense output will switch to the opposite state For Set the output will switch from 5V to 0V and for Reset from 0V to 5V If this output is connected to the switch input of another servo controlled switch the second unit will start ...

Page 4: ...bered by the SCS2 and need not be set again Programming Programming or re programming may be performed at any time using push button switches S1 and S2 with indication provided by the LED indicator Programming is performed in five steps in order Set Position Reset Position Rotation Speed Reset Bounce Level and Set Bounce Level No new programmed settings will be saved unless all five programming st...

Page 5: ...e servo will rotate continuously between the two end positions which have already been programmed at the current rotation speed There are sixteen steps of rotation speed varying from about 0 25 s to 20 s for 90 degree rotation Press and release S2 to increase the speed by one step or press and release S1 to decrease it by one step Please read the Cautionary Notes below before attempting to use ver...

Page 6: ...ogramming step 5 the servo will rotate continuously between the programmed Set position and the position represented by current Set Bounce level at the programmed rotation speed There are sixteen steps of bounce level varying from zero to approximately 20 of the programmed servo range between Set and Reset Press and release S2 to increase the bounce level by one step or press and release S1 to dec...

Page 7: ...arrangements before assuming that the SCS2 is faulty and returning it for repair 2 Although the rotation rate of the SCS2 can be programmed to a maximum speed of 0 25 seconds for 90 degree rotation many servos can not achieve this speed If you program a rotation speed higher than the servo can actually achieve the servo will not be able to keep up with the programmed output of the SCS2 when moving...

Page 8: ...o uk Other Timpdon ServoSwitches Model SCS1 User Notes Identical in performance and operation to SCS2 but without the sense output Recommended for use for control of single signals or points or at the end of a series of daisy chained SCS2 units where no further sequential operation of servos is required ...

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