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Shinko Motors

Larry Mitchell
Updated

This is the TI-3000JX option for Shinko motors with Tamagawa TS5778 Smart ABS serial encoders. The Shinko serial encoders listed in the next section are supported by this selection.

 

Types Supported

The following list shows the Tamagawa encoders that are currently supported by the TI-3000JX option.

 

Identification

The motors we have seen have very little identification on them. These motors may be used on robots, but we do not have very much information on them. The two Shinko motors that we have seen had a small nameplate on them. The two models were: V21145018, 4 KW, 3000 RPM and V211462002, 2 KW, 3000 RPM.

Another motor that was very similar electrically also had no nameplate, and we were told that it was a Kobelco robot motor.

The encoders are normally identified clearly as OAH74 TS5778. This label is on the encoder, but for some motors, a cover needs to be removed to see the encoder.

 

Feedback Type Selection

Pressing the FBK TYPE key will provide the following selections for Shinko:

  1. P8 C16384 OAH74 – 8 pole with 16,384 incremental counts/rev using a TS5778 encoder
  2. P8 C08192 OAH74 – 8 pole with 8,192 incremental counts/rev using a TS5778 encoder

Select the appropriate type and connect the encoder cable for the type selected.

 

Debugging

After the type selection and cable connections have been made, a simple debugging sequence can verify that the motor is ready to run. Performing this debugging check can save a great deal of time and provide confidence in the setup. Skipping this debugging check can cost a great deal of time, and could cause damage to the amplifier or possibly even the motor.

The debugging sequence is as follows:

  1. Press the DEBUG key to put the TI-3000JX in DEBUG mode.

  2. Rotate the motor in the forward direction (CCW looking at the shaft for Shinko & Kobelco) and verify that the UVW pulses on the display are correctly moving through the commutation pattern as follows: HLL, HHL, LHL, LHH, LLH, and HLH. It is essential that these six commutation steps are generated on the TI-3000JX.

  3. Connect a bench power supply to the armature leads (amplifier not connected) with the polarity +U and –V. Verify that, at each rotor lockup position, this produces a commutation pattern of V =H, W=L and U at the position where it will toggle between H and L with a very small motion of the
    motor shaft.

  4. Move the minus lead of the power supply from the V to the W lead. Verify that, at each rotor lockup position, this produces a commutation pattern of U=L, V =H, W at the position where it will toggle between H and L with a very small motion of the motor shaft.

Passing the above debugging checks is a necessary condition for running the motor. If any of these checks failed, there is absolutely no point in trying to run the motor, and you risk damaging the amplifier or possibly the motor by doing so.

 

If it does not pass the Debug check, review your setup and correct any mistakes. Only attempt to run the motor after it passes the Debug check.

After the initial successful debugging, it is no longer necessary to go to debug mode before each run. However, it does provide a chance to check that the brake is released (if it has one) and that the motor is indeed ready to run.

 

Running

After a successful Debug check, perform the following sequence to run the motor.

  1. Connect the motor armature leads to the amplifier using the appropriate connectors.

  2. Press the RUN key to enable the amplifier. The following check list will appear on the display.
    a. Are hands and clothing clear of moving parts?
    b. Is the motor mounted securely?
    c. Is the speed pot set to the zero (stopped) position?

  3. Press the RUN key again after insuring that the check list is satisfied.

  4. The RED LED on the amplifier should change to GRN. If it does not, make sure that the cable from the TI-3000JX to the amplifier is connected correctly and that power has been applied to the amplifier.

  5. Turn the potentiometer either direction from the zero setting, and the motor should begin turning. The bottom line of the display should show the RPM reading.

  6. Returning the pot to zero and moving it the other direction from zero should reverse the direction of the motor. 

 

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