102
Code Error name Cause/Action
C0 Excessive actual speed Cause: This alarm indicates that the motor speed exceeded the
maximum speed set in the applicable system parameter.
This alarm will not generate in normal operation, but may
occur in the following conditions:
(1) Large actuator slide resistance in certain area, or
(2) Instantaneous increase in load due to application of
external force, which may cause the load to decrease and
actuator to move rapidly before a servo error is detected.
Action: Check for abnormality in the assembly condition of
mechanical parts.
If the actuator is suspected to be the cause, please contact
IAI.
C1 Servo error This alarm indicates that after receiving a movement command the
motor is unable to operate for two seconds or more before reaching
the target position.
Cause: (1) Loose or disconnected motor-relay cable connector
(2) Brake cannot be released on a controller equipped with
brake.
(3) Large load due to application of external force
(4) Large slide resistance of the actuator itself
Action: (1) Check the wiring condition of the motor relay cable.
(2) Check the wiring condition of the brake cable, and also
turn on/off the brake release switch to see if the brake
makes “click” sounds.
(3) Check for abnormality in the assembly condition of
mechanical parts.
(4) If the load is normal, cut off the power and move the
actuator by hand to check the slide resistance.
If the actuator is suspected to be the cause, please contact
IAI.
C9 Excessive motor supply
voltage
This alarm indicates that the motor supply voltage is excessive (24V +
20%: 28.8V or more).
Cause: (1) High voltage of the 24-V input power supply
(2) Faulty part inside the controller
Action: Check the voltage of the input power supply.
If the voltage is normal, please contact IAI.
CA Overheating This alarm indicates that the temperature around the power transistor
in the controller is too high (95°C or higher).
Cause: (1) High temperature around the controller
(2) Faulty part inside the controller
Action: Reduce the temperature around the controller.
If the temperature around the controller is normal, please
contact IAI.
CC Abnormal control supply
voltage
This alarm indicates that the voltage of the 24-V input power supply is
excessive (24V + 20%: 28.8V or more).
Cause: (1) High voltage of the 24-V input power supply
(2) Faulty part inside the controller
Action: Check the voltage of the input power supply.
If the voltage is normal, please contact IAI.
CE Drop in control supply
voltage
This alarm indicates that the voltage of the 24-V input power supply
has dropped (24V – 20%: 19.2V or less).
Cause: (1) Low voltage of the 24-V input power supply
(2) Faulty part inside the controller
Action: Check the voltage of the input power supply.
If the voltage is normal, please contact IAI.
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