14
Troubleshooting
■ Servos do not respond to a serial signal.
□ The ID or the Baud Rate may be incorrect.
Always set the ID as 0 and the RATE as 115200 when connecting an RCB-3HV control board.
■ Servos do not respond to a PWM signal.
□ The PWM signal may be incompatible.
This product is designed for use in robotics equipment, and may not be compatible with some radio
controlled receivers.
□ Serial Signal is checked.
■ Servos lose power during operation.
□ The temperature limiter may have triggered to prevent overheating.
Switch the power off and wait for the servos to cool down. Then re-start and check for full power.
You can change the threshold at which servos go into temperature limitation mode through the ICS
menu. However, lowering this value (and consequently raising the temperature threshold) increases
the possibility of a servo failure.
□ Servo movement mode may have been changed during serial operation.
Sharp drops in voltage can cause the servos to change between serial and PWM modes.
Switching the power off and then on again will return the servos to the correct mode.
When operating servos in serial mode, please ensure you have selected Serial Signal as on in the ICS menu.
This isn t really a problem when operating using PWM movement.
■ Servos move erratically.
□ The serial movement baud rate may be unsupported.
Servos may move erratically when they receive a signal baud rate that is not supported.
□ Servos that were assigned the same ID may be connected in a daisy-chain.
Daisy-chaining servos assigned the same ID on the same output line will result in problems with the signal and
erratic servo movement. To control servos of the same ID on a single signal, set one as a master servo and the
rest as slave servos through the ICS menu.
□ The received signal may be incompatible with the movement mode.
Inputting incompatible signals when using serial or PWM movement modes can result in erratic
movement of servos.
□ There may be a faulty connection or broken wire.
Part of the wiring to the servos may be frayed or severed and coming in and out of contact.
■ Diminished servo power.
□ Servos may have detected a locked out condition and have gone into protection mode.
If the servos are indeed locked out, extricate them from that position and remove the load from the servos.
You can set the time threshold the servos will wait before going into protection mode via the ICS menu.
■ A chemical-like smell is being emitted from the servos during operation.
□ The motor coils may be starting to burn out.
Immediately turn off the power and allow the servos to cool before operating again.
