SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.
SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.
SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.
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Chapter 4 Explanation of Functions<br />
4.2.86 Automatic user-parameter setting<br />
The automatic user-parameter setting function allows you to make the<br />
inverter automatically store the parameters you readjusted sequentially<br />
as user parameters "U001" to "U012". You can use the stored data as a<br />
readjustment history. To enable this function, select "01" (enabling<br />
automatic user-parameter setting) for the automatic user-parameter<br />
setting function enable (b039).<br />
The setting data entered in (displayed on) the digital operator is stored when the STR key is pressed. Also<br />
the monitor screen code (d***) is stored at the same time.<br />
User parameter "U001" retains the latest update of setting; user parameter "U012", the oldest update.<br />
A functional parameter can be stored as only a single user parameter. After all the 12 user parameters<br />
have been used to store functional-parameter settings, new functional-parameter settings will be stored as<br />
user parameters on a first-in, first-out basis (that is, the next parameter will be written to "U012", storing the<br />
oldest update, first).<br />
Item Function code Data Description<br />
Automatic user-parameter setting<br />
00 Disabling automatic user<br />
b039<br />
function enable<br />
01 Enabling automatic user<br />
4.2.87 Stabilization constant setting<br />
The stabilization constant setting function allows you to adjust the inverter<br />
to stabilize the motor operation when the motor operation is unstable.<br />
If the motor operation is unstable, check the motor capacity setting (H003/H203) and motor pole setting<br />
(H004/H204) to determine whether the settings match the motor specifications. If they do not match,<br />
readjust the settings. If the primary resistance of the motor is less than the standard motor specification, try<br />
to increase the setting of "H006/H206/H306" step by step. Try to reduce the setting of "H006/H206/H306" if<br />
the inverter is driving a motor of which the capacity is higher than the inverter rating.<br />
You can also use the following methods to stabilize the motor operation:<br />
1) Reducing the carrier frequency (b083) (See Section 4.2.11.)<br />
2) Reducing the V/f gain setting (A045) (See Section 4.2.17.)<br />
Item Function code Data Description<br />
Stabilization constant<br />
H006/H206/<br />
Increase or reduce the setting to stabilize<br />
0. to 255.<br />
H306<br />
the motor.<br />
V/f gain setting A045 20. to 100. (%) Reduce the setting to stabilize the motor.<br />
Carrier frequency setting b083 0.5 to 15.0 (kHz) Reduce the setting to stabilize the motor.<br />
4.2.88 Selection of operation at option board error<br />
You can select how the inverter operates when an error results from<br />
a built-in option board between two modes. In one mode, the<br />
inverter trips. In the other mode, the inverter ignores the error and<br />
continues the operation.<br />
When you use the feedback option board (SJ-FB) as option board 1,<br />
specify "01" for "P001". When you use the SJ-FB as option board 2,<br />
specify "01" for "P002".<br />
Related code<br />
b039: Automatic user-parameter<br />
setting function enable<br />
U001 to U012: User parameters<br />
Related code<br />
H006/H206/H306: Motor stabilization<br />
constant, 1st/2nd/3rd motors<br />
A045: V/f gain setting<br />
b083: Carrier frequency setting<br />
Related code<br />
P001: Operation mode on expansion card 1<br />
error<br />
P002: Operation mode on expansion card 2<br />
error<br />
Item Function code Data Description<br />
Operation mode on<br />
00 TRP: Alarm output<br />
expansion card 1 and 2 P001/P002<br />
RUN: Continuation of operation<br />
01<br />
errors<br />
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