Hitachi SJ700-2 - Manual (Page 142)

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
00 Disabling automatic user Automatic user-parameter setting
function enable
b039
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 0.5 to 15.0 (kHz) Reduce the setting to stabilize the motor.
4.2.88 Selection of operation at option board error
Data
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 Description
00 TRP: Alarm output Operation mode on
expansion card 1 and 2
errors
P001/P002
01
RUN: Continuation of operation
b039: Automatic user-parameter
setting function enable
U001 to U012: User parameters
Related code
H006/H206/H306: Motor stabilization
constant, 1st/2nd/3rd motors
A045: V/f gain setting
b083: Carrier frequency setting
Related code
P001: Operation mode on expansion card 1
error
P002: Operation mode on expansion card 2
error
Related code