Hitachi SJ700D-004L, Instruction Manual

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Chapter 4 Explanation of Functions
4-79
4.2.86 Automatic user-parameter setting
The automatic user-parameter setting function allows you to make the
inverter automatically store the parameters you readjusted sequentially as
user parameters "U001" to "U012". You can use the stored data as a
readjustment history. To enable this function, select "01" (enabling automatic
user-parameter setting) for the automatic user-parameter setting function
enable (b039).
The setting data entered in (displayed on) the digital operator is stored when the STR key is pressed. Also the monitor
screen code (d***) is stored at the same time.
User parameter "U001" retains the latest update of setting; user parameter "U012", the oldest update.
A functional parameter can be stored as only a single user parameter. After all the 12 user parameters have been used
to store functional-parameter settings, new functional-parameter settings will be stored as user parameters on a
first-in, first-out basis (that is, the next parameter will be written to "U012", storing the oldest update, first).
Item Function code Data Description
Automatic user-parameter setting
function enable
b039
00 Disabling automatic user
01 Enabling automatic user
4.2.87 Stabilization constant setting
The stabilization constant setting function allows you to adjust the inverter to
stabilize the motor operation when the motor operation is unstable.
If the motor operation is unstable, check the motor capacity setting (H003/H203) and motor pole setting (H004/H204)
to determine whether the settings match the motor specifications. If they do not match, readjust the settings. If the
primary resistance of the motor is less than the standard motor specification, try to increase the setting of
"H006/H206/H306" step by step. Try to reduce the setting of "H006/H206/H306" if the inverter is driving a motor of
which the capacity is higher than the inverter rating.
You can also use the following methods to stabilize the motor operation:
1) Reducing the carrier frequency (b083) (See Section 4.2.11.)
2) Reducing the V/f gain setting (A045) (See Section 4.2.17.)
Item Function code Data Description
Stabilization constant H006/H206/H306 0. to 255.
Increase or reduce the setting to stabilize
the motor.
V/f gain setting A045 20. to 100. (%) Reduce the setting to stabilize the motor.
Carrier frequency
setting
b083
CT mode : 0.5 to 15.0 (kHz)
<0.5 to 10.0(kHz)>
VT mode : 0.5 to 12.0 (kHz)
<0.5 to 8.0(kHz)>
Reduce the setting to stabilize the motor.
(note) <>:applied for 75 to 150kW
4.2.88 Selection of operation at option board error
You can select how the inverter operates when an error results from a
built-in option board between two modes. In one mode, the inverter
trips. In the other mode, the inverter ignores the error and continues
the operation.
When you use the feedback option board (SJ-FB) as option board 1, specify
"01" for "P001". When you use the SJ-FB as option board 2, specify "01" for
"P002".
Item Function code Data Description
Operation mode on
expansion card 1 and 2
errors
P001/P002
00 Alarm output
01 Continuation of operation
b039: Automatic user-parameter
setting function enable
U001 to U012: User parameters
Related code
P001: Operation mode on expansion card 1 error
P002: Operation mode on expansion card 2 error
Related code
H006/H206/H306: Motor stabilization
constant, 1st/2nd/3rd motors
A045: V/f gain setting
b083: Carrier frequency setting
Related code