User manual

DPSI RV Family Operating Instructions Version 2.1
page 37 of 44
8. Error Indications
DPSI systems use an internal microcontroller that constantly monitors
all voltages. An intelligent algorithm ensures that low voltage of the
connected batteries is detected not only by the short-term drop in
voltage during movement of all servos. The internal resistance of the
battery cells, which is indeed different for different types of batteries,
thus has relatively little influence. The algorithm was especially
designed for operation in RC model airplanes (thus a cyclical load of
the batteries), i.e. not for permanent load of the batteries. Safe
detection of low voltage is therefore possible.
The internal piezo buzzer indicates various types of errors:
1. Overload (short circuit):
⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯
Error signal: Continuous beep
If the power consumption of the DPSI becomes too high, a continuous
buzz tone is emitted. In this case there is an external short circuit,
which can lead to destruction of the DPSI (depending on the duration
of the short circuit). In this case, turn it off immediately or remove the
batteries. This type of error has the highest priority. Once the short
circuit (during operation) has been corrected, the buzzer stops buzzing
after a de-qualification time of about 4 seconds.
2. Batteries empty:
⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯
Error signal: continuous 0.1 second beep / 0.1 second
pause
If the voltage at the receiver (or at the servos) drops below a value of
about 4.3 volts, this error will be emitted. In this case, the batteries
(regardless of which type is being used) are completely discharged and
safe operation is no longer possible. This error is extremely critical,
since the entire RC system can completely “abort” at any time (due to
the low voltage).