Timpdon Electronics Tel 0161 -980 7804 Issue 1–March2011
Web www.timpdon.co.uk
When satisfied, press and hold bothswitches S1 and S2 together until
the LED illuminates continuously, after about two seconds. Then
release both switches.
5At this point only, programming is complete. All new settings will now
be saved in non-volatile memory, and applied to SCS3operation. The
unit will then automatically exit programming mode, theLED will
extinguish and the SCS3is ready for normal operation.
Cautionary Notes
1The current consumption of a servo, when in motion, increases with the
rotation speed. At high rotation speeds, the current on a single standard
servo can reachas much as 500 mA.
Most small batteries [eg AA cells] used by many modellers to power
servos can not supply this level of current without a very significant
voltage drop, in the order of one or two volts, at the battery terminals.
With 4.8V supplies, or with partially discharged batteries, this may well
result in erratic servo operation if the battery terminal voltage falls below
the minimum specified servo operating voltage.
If you experience such erratic operation, either reduce the servo rotation
speed or improve your power supply arrangements before assuming that
the SCS3 is faulty and returning it for repair.
2Although the rotation speed of the SCS3can 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 SCS3when moving betweeneach programmed position,
and vice versa.
If this occurs, and you have bounce levels programmed, the actual
bounce levels achieved in normal operation may vary considerably from
those programmed, or even be lost completely. This problem is likely to
be more apparent if you have programmed large angles of rotation.
