Hitachi SJ700-2 Automatic user-parameter setting, Stabilization constant setting

Related code

b039: Automatic user-parameter setting function enable

U001 to U012: User parameters

Chapter 4 Explanation of Functions

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	b039	00	Disabling automatic user
function enable		01	Enabling automatic user
4.2.87 Stabilization constant setting				Related code
			H006/H206/H306: Motor stabilization
The stabilization constant setting function allows you to adjust the inverter			constant, 1st/2nd/3rd motors
			A045: V/f gain setting
to stabilize the motor operation when the motor operation is unstable.			b083: Carrier frequency setting

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/	0. to 255.	Increase or reduce the setting to stabilize
	H306		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

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".

Related code

P001: Operation mode on expansion card 1 error

P002: Operation mode on expansion card 2 error

Item	Function code	Data	Description
Operation mode on	P001/P002	00	TRP: Alarm output
expansion card 1 and 2		01	RUN: Continuation of operation
errors

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