Safety Rules for Using Motors

Motor Handling Notes

1. When moving, wiring, maintaining motors, confirm that the controller power has been shut down.
2. Take care not to damage or crush motor cables or let them undergo much stress or heavy load.
3. When a motor is running, never reach out towards the rotating part.
4. Do not touch a motor and its peripheral devices when the motor power is on and for a while after it is cut off, since they are HOT.
5. When carrying a motor, hold the motor body not the cables, shafts or encoders.
6. Do not put heavy materials on motors or hang them onto motors.
7. Avoid letting motors undergo strong shock or impact.
8. If an earthquake or any other disaster happens, confirm the installation conditions of motors and machines for safety before starting motors.
9. Do not disassemble or modify motors.

Precautions for Installing Motors

1. Install specified extended-joint motors. Do not install motors other than specified ones.
2. The robot controller and extended-joint motors will operate in combination. According to the specified capacity, select the proper motors.
3. When hooking up motors to an extended-joint support robot controller, be sure to check the motor models and joint numbers which are labeled on motors.
4. When routing motor cables, observe the following to prevent them from undergoing stress.
• Protect the cable clamps and connector pins from excessive stress due to bending or cable weight.
• When installing extended-joint motors on moving mounts, be sure to fasten their cables to those mounts at the connector ends and route the relay cables through cable bearers to minimize excessive bending stress.
• Make the radius of each cable loop as large as possible.
5. Observe the following notes relating to the allowable loads of motor output shafts.
• Design mechanisms so that the radial or thrust load that will apply to motor shafts at installation or in operation will be kept within the allowable range specified for each motor model.
• To keep radial load that would be caused by a slight runout of the center within the allowable range, use flexible couplings exclusively designed for servo motors and as rigid as possible.
• When using rigid couplings, mount them with extra care. If applied in installation, excessive bending load will break motor shafts or shorten the service life of bearings.
6. When mounting or removing a coupling to/from the end of a motor shaft, do not apply any direct impact onto the motor shaft with a hammer. An encoder fitted on the other end of the shaft will be damaged.
   Perform centering sufficiently. Misalignment will produce vibration, resulting in damaged bearings.
7. Never use motors in an environment where they may be subjected to corrosive gases, or inflammable gases. Do not use them in the vicinity of the inflammable. (Extended-joint motors have not been designed to withstand explosions.)
   Ingress protection code of the motor is IP67 (cable tip excluded).
8. Be sure to install and set up motors so that they will never cause a fire or bodily injury even if an earthquake or any other disaster occurs.

Motor Storage Notes

1. Do not store motors in an environment where they may be subjected to rain, water splash, harmful gases or liquids.
2. Shield motors from direct sunlight and store them within the specified temperature/humidity range.