Generic Pulse Motor Selection

Generic Pulse feedback is a special case. Rather than try to categorize or list all the various manufacturers of Hall effect motors, Hall effect feedback motors are simply listed as a generic type.

Setup

The FBK MFG key must be pressed until the top line of the display shows Generic Pulse. The FBK TYPE key allows selection of 120 degree Hall effect feedback or the less common 60 degree feedback.

The TI-3000JX needs 2 pieces of information to run the Hall effect feedback based motor:

1. Use the FBK TYPE key to selection either 120 degree or 60 degree Hall effect feedback depending upon which type of motor you are trying to run (see further explanation below).

2. Press the SETUP key to use the Setup menu for selection the number of poles for the motor that you wish to run. 

Generic pulse motors with Hall feedback or encoder with Hall type pulses are the simplest type. There is really no setup entry required to run them other than selecting 120 degree or 60 degree type. However, for the RPM reading to be accurate, the TI-3000JX must know the number of poles for the motor. This can be entered by pressing the SETUP key. The entry is made similarly to the resolver motors. After the entry has been made, press the SETUP key to exit setup mode.

The commutation pulses from the motor do not necessarily have to be from Hall effect pickups. Many incremental encoders now provide U, V, and W commutation pulses so that Hall effect pickups are not required. The Generic Pulse selection can be used to run these kinds of motors as well, as long as the commutation pulses are timed with the line-to-line armature voltages. On many of these motors, the commutation pulses from the encoder are timed with the line-to-neutral armature voltages, and these will be 30 electrical degrees off when run as Generic Pulse. Running motors this far off timing is generally not very productive as it does not help you decide whether the timing is set correctly.

The line to neutral timing often occurs with motors that are called “AC servo motors”. These motors typically use the U, V, and W pulses only for starting and then use the encoder count for commutation after the count is indexed by the Z pulse. It is better to run encoder feedback motors with line to neutral timing as Generic Encoder Feedback or Manufacturer Specific motors. See the following sections for more information on these categories.

Debugging

Debugging is a quick and essential step that must be accomplished before trying to run the motor. If there are any problems in the setup, correct debugging should find them. If the correct setup has not been verified by debugging, there is nothing to be accomplished by attempting to run the motor. 

Section 2.2.3 provides general information about debugging the TI-3000JX setup. You will want to be familiar with that material.

When you believe that the TI-3000JX is properly set up (as described in the previous section), perform the following steps to debug the setup:

1. Press the DEBUG key to enter DEBUG mode.

2. Rotate the shaft and verify that the U, V, W line states 1) each toggle between HI and LO and 2)there are no positions in which all 3 Hall effect signals are simultaneously HI or LO. In a correct sequence, you will always have 2 lines in one state and the remaining line in the opposite state. The pattern of line states should repeat as many times as there are pole pairs.

3. Verify that the armature leads are not connected to the drive. From the lockup power supply, connect the + lead to the U phase and the–lead to the V phase.

4. On the TI-3000JX display, you will typically see V = H and W = L. When you wiggle the shaft slightly, you should see U change or toggle between H and L. This is very important. If this does not happen, the motor cannot run properly, and you have a mistake in your setup that must be corrected.
   
   Note: Some Hall effect motors are aligned such that the Hall effect signal is LO (instead of HI which is more typical) when the corresponding phase voltage is positive when back driving the motor. For these motors you will see V =L, W=H and U toggling. When you find motors aligned in this manner, you must determine whether this is correct or whether someone aligned the motor incorrectly.

5. Switch off the lockup power supply and move the–lead from phase V to phase W. This will provide a valuable cross-check for verifying proper operation.

6. Switch on the power supply and note which way the motor jogs. This should agree with the forward direction you know is correct for this motor.

7. On the TI-3000JX display, you should see U = Land V = H. When you wiggle the shaft slightly, you should see W change or toggle between H and L. This is very important. If this does not happen, the motor cannot run properly, and you have a mistake in your setup that must be corrected.
   
   Note: As described in 4 above, some Hall effect motors are aligned such that the Hall effect signal is LO (instead of HI which is more typical) when the corresponding phase voltage is positive when back driving the motor. For these motors you will see U = H, W = Land W toggling.

Those specific setup checks should help insure that your Hall effect motor will run correctly. For more general information on debugging your setup, see Section 2.2.3.

Running

Section 2.2.4 provides general information about running motors with the TI-3000JX. You will want to be familiar with that material.

Section 2.2.5 provides safety information to be observed when running motors with the TI-3000JX. Please read this section carefully and exercise all safety considerations.