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AX2550 Motor Controller User’s Manual 105
Fault Messages
Fault Messages
The AX2550 uses the LED display to report fault conditions. When these messages are
displayed, the motors are normally stopped.
No Control
This message is displayed in the R/C mode to indicate that no valid radio signal has been
detected at its inputs or that radio signal has been lost. When the controller is configured
in the mixed mode, signals on channel 1 and channel 2 must be present to enable the con-
troller. When the controller is configured in the separate mode, a signal received on either
channel will enable the controller. When enabled, the controller will display the normal
motor status described previously.
The “no control” message is displayed using the following sequence of digits.
Forward Reversed
Reversed Reversed
MOSFET Transistors are
OFF
Motors are freewheeling
Signals a temporary Off condition in
case of Overvoltage, undervoltage or
Overtemperature condition (see
page 38), of if Dead-man switch is
activated (see page 52)
Rapidly Flashing
MOSFET Transistors are
OFF
Motors are freewheeling
Controller is permanently Off after an
Encoder Error, Short Circuit detection
or Emergency Stop activation. Con-
troller must be restarted.
TABLE 18. Motor Commands and resulting display
Possible Display Motor 1 Motor 2 Comment