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Blinding
To make the H3's many parameters more manageable, Toshiba employs "blinded" parameters
and "blinded" groups.
BLINDED PARAMETERS
Item 9, VOLTAGE BOOST #1, is an example of a "blinded" parameter. A blinded parameter is
identified in the parameter charts (which start on page 8-1) by its gray shading. A "blinded"
parameter is preceded by a parameter that has a shaded choice in the Adjustment Range column
(like Item 8, VOLTS PER HERTZ PATTERN). Item 9, VOLTAGE BOOST #1, is visible to the
programmer only if item 8, VOLTS PER HERTZ PATTERN, is set to "1" or "2". Note how
Adjustment Range 1 and 2 are shaded to indicate this. There are many other blinded parameters
in the H3.
BLINDED GROUPS
Of the twenty groups in the H3, only three are accessible when the drive is programmed with
factory defaults. To adjust a parameter that is not in one of the three visible groups, that
parameter's group must first be added to the group list. This is done in GROUP: UTILITY
PARAMETERS, which is one of the visible groups.
Programming Example 2
Objective: Change ELECTRONIC THERMAL PROTECT LEVEL 1 in GROUP: PROTECTION
PARAMETERS to 89%.
Note 1: ELECTRONIC THERMAL PROTECT LEVEL 1 is in a group that is not one of the three
groups visible when the drive is programmed with factory defaults. Therefore, GROUP:
PROTECTION PARAMETERS will have to be added to the visible group list.
Note 2: GROUP: PROTECTION PARAMETERS is added to the visible group list by changing item
304, PROTECTION FUNCTION PARAMETERS BLIND in GROUP: UTILITY
PARAMETERS to "1". To change item 304, however, it must first be unblinded by setting
Item 298, BLIND FUNCTION SELECTION in GROUP: UTILITY PARAMETERS to "1".
Step 1: Press PRG and use up arrow to display GROUP: UTILITY PARAMETERS. Press READ/
WRITE key. Drive will display INDUSTRIAL APPLICATIONS because it is the first
parameter in the group.
Step 2: Instead of using the down arrow to go through all the parameters in GROUP: UTILITY
PARAMETERS, use the up arrow to make the drive display the last visible parameter in
GROUP:UTILITY PARAMETERS, which is item 298, BLIND FUNCTION SELECTION.
Step 3: Press READ/WRITE and adjust the "0" to a "1" using the arrow keys. Press READ/
WRITE again. Drive flashes WRT to confirm entry.
Step 4: Items 299-315 are now unblinded. Use the down arrow to display PROTECTION
FUNCTION PARAMETERS BLIND. Press READ/WRITE, use the up arrow to change the
"0" to a "1", and press READ/WRITE again. Drive flashes WRT to confirm entry.
Step 5: Press PRG twice to return to the group list. Use the arrows to verify that a fourth group,
GROUP:PROTECTION PARAMETERS is now a part of the group list.
Step 6: Press READ/WRITE to enter the group. Drive will display Item 142, DYNAMIC BRAKING
SELECTION because that parameter is the first in the group.
Step 7: Use the down arrow to reach Item 158, ELECTRONIC THERMAL PROTECT LEVEL 1.
Step 8: Press READ/WRITE. Using the arrows, adjust the value to "89". Press READ/WRT. Drive
flashes WRT to confirm entry.
Step 9: Press PRG to leave programming.
Search Function
When GROUP: PARAMETERS CHANGED FROM FACTORY DEFAULT is displayed and READ/
WRITE is pressed, the drive will display SEARCHING. Any displayed parameters have been
changed to a value different from Toshiba's default. Press READ/WRITE to see the value of the
parameter. The parameter can be modified with the up/down arrows. Pressing READ/WRITE
again resumes the drive's search.
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