Hitachi SJ700-2 Data to be written Description, Recalculating the motor constants

Chapter 4 Explanation of Functions

(5) Enter command (storing the updates of register data)

Neither the command (06h) to write data to a register nor the command (10h) to write data to multiple registers can store the updates they made in the internal memory of the inverter. Turning the inverter power off without storing the updates deletes them and restores the original register settings. If you intend to store register updates in the internal memory of the inverter, issue the Enter command as described below.

If you have updated a control constant, you must recalculate the motor constants. In such cases, use register "0900h" for recalculation as described below.

How to issue the Enter command

With the command (06h) to write data to registers, write all register data to the internal memory. To recalculate the motor constants, use the same command to write the data shown in the following table to register "0900h":

Data to be written	Description
0000	Recalculating the motor constants
0001	Storing the register data
Other than the above	Recalculating the motor constants and storing the register data

Notes:

-Execution of the Enter command requires considerable time. To check whether data writing is in progress, monitor the status of the signal (coil No. 001Ah) that indicates whether data writing is in progress.

-The internal memory device of the inverter is subject to a limitation on the number of rewriting operations (about 100,000 times). Frequent use of the Enter command may shorten the inverter life.

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