The few setup requirements for the TI-3000JX can be taken care of in the TI-3000JX utility menu. This menu is accessed by pressing the MENU key. The menu may be exited at any time by pressing the MENU key again. The ARROW keys allow for positioning of the flashing cursor beside the desired function. When the desired function is selected via the ARROW keys and cursor, the function may be executed by pressing the ENTER key. Any menu function that is executing may be exited and returned to the menu display by pressing the MENU key.
As of this version, the Main Menu will appear with "Manage License", “Set Contrast”, and “Test Hardware” selections. The "Manage License" selection is only for legacy customers and will soon be removed from the menu. The "Set Contrast" allows setting the contrast of the OLED display on a scale of 0 - 10. The "Test Hardware" provides a procedure for testing the drive when problems are encountered. It is sometimes difficult to isolate the exact cause of the problem, and this utility helps determine whether the drive itself is working properly or not.
Set Contrast
The newer OLED displays used on the TI-3000JX are much easier to read than the legacy LCD screens used on older TI-3000 models. However, we still provide the ability to adjust the contrast of the display to best suit your requirements. Within this function you may set the OLED contrast value from 0 to 10. Use the left and right arrow keys to adjust the value.
Test Drive
The Drive Test utility will help determine whether an AMC drive has a faulty phase or some other problem by analyzing the behavior of the RED/GRN LED on the drive. This utility is included in TI-3000JX V3.4 Beta13 and higher software revisions.
Background-
The LED on the drive is useful in determining whether a drive problem exists, but the LED indication must be analyzed carefully to determine what it means. Basically a GRN LED means the following:
The drive has been enabled.
The Hall effect inputs are not all HI or all LO.
The particular phase polarity energized at the time is working properly (providing that the speed pot is not set right on zero).
If any of the above items are not true, the LED will be RED. If it is RED, then some investigation is required to determine which items or combination of items caused it to be RED.
These AMC drives use 6 step commutation. The drive has motor 3 phase lines which are energize on pair at a time with either positive or negative polarity. That amounts to 6 possible ways to energize the lines. There are 6valid Hall effect states, each of which corresponds to one of the ways to energize the phase lines. If the pot is turned in the direction to run the motor in the forward direction (moving from 0 toward 1), the FWD polarities apply. It is set to run in the reverse direction (moving from 0 toward 0), then the REV polarities apply. The following table shows the 6 steps with corresponding Hall effect states and phase line voltages. The TI-3000JX display shows these patterns during the drive test.
For each phase, there is a power transistor available to apply positive voltage and one for negative voltage to that phase. When the drive fails, it is often one of these 6 transistors that has failed. Often the test can be used to determine which transistor (or associated components) has probably failed. For instance, if the positive transistor for the U phase has failed, the LED will probably turn RED for steps 1 and 2 when the pot is in the forward direction or steps 4 and 5 in the negative direction, because those are the steps that apply phase power through the positive driver for phase U.
When the components in the drive fail, it could be risky connecting a motor to the drive because a high current might be applied to the windings depending upon the nature of the failure. The information seems to be presented by the LED even though the phase lines are unloaded, the test should be done with nothing connected to the phase lines.
Running the Test-
Instructions for starting the test:
Verify that the TI-3000JX and drive are properly connected as per the TI-3000JX User Manual.
Verify that nothing is connected to the drive armature leads.
Verify that the speed pot is set to 0.
From the Stop display, press the MENU key to access the Main Menu.
Use the Down Arrow key to move the cursor down to selection ‘2 Test Drive’.
Press the ENTER key to select the Drive Test Utility.
The screen will display the following warning:
After verifying that the drive armature leads are not connected to anything, press the RUN key to start the test.
The LED on the drive should change from RED to GRN. Not changing to RED could mean that the drive is not being enabled, or it could mean that the particular drive phase polarity selected has a problem.
This should cause the following display to appear:
The first column shows the step number which can be changed from 1 through 6.
The second column shows the HI and LO states of the U,V, and W Hall signals currently applied to the drive from the TI-3000JX connector J10 pins 1, 2, and 3 respectively. You can verify these signals with a scope or voltmeter connected to each of these pins and referenced to J10 pin 7 or 8. The TI-3000JX cable normally has a bare wire between pins 7 and 8 to which the reference lead of the scope or meter can be connected. If the voltage on pins 1, 2, and 3 do not agree with the display, then a TI-3000JX problem, drive problem or cable problem are the most likely possibilities.
The third column shows the voltage polarities the drive is applying to the U, V, and W armature leads when the speed pot is moved in the forward direction (from 0 toward 1) and in the reverse direction when the speed pot is moved in the reverse direction (from 0 toward 9). The test always begins with this display on step 1.
Turn the speed pot from 0 to 1 (forward direction). This should apply the voltage polarity of +U–V, shown with the FWD heading. The LED should remain GRN. If it turns RED, there is likely a problem with this phase polarity on the drive. This kind of problems requires repair from the manufacturer, AMC.
Note: It is difficult to measure these voltages. Any oscilloscope used must be isolated to prevent damage to the drive or scope and prevent danger to the user. Many meters will not read the PWM(pulse width modulation) used to generate these voltages, and the scope trace can be very confusing to interpret. Noting the color of the LED is the goal of these steps.
Press the Up Arrow key to move to step 2. Repeat the observations made for commutation step 1 insteps 8 and 9 of this test.
Continue with checking the drive with commutation steps 3 through 6, if no problems have been found. If problems have been found, then you may not wish to continue checking additional commutation steps.
Turn the speed pot back through 0 to 9 (reverse direction). Perform the checks that were done for the forward pot setting for commutation steps 1 though 6.
If the LED remained GRN though out the checkout, there is probably nothing wrong with the TI-3000JX,drive, and cabling. If you were having trouble running a motor, perhaps it was due to a mistake in the TI-3000JX setup. Check the TI-3000JX User Manual, and make sure that you properly fill out the worksheet for any motor being run using the Generic Encoder or Generic Resolver selections.
Press the MENU key to terminate the test. This should cause the drive LED to change from GRN to RED because the drive will be disabled.
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