6-19
6-6 To Save the Change to the Holding Register (Enter Command)
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
6
Communication Function
6-6 To Save the Change to the Holding
Register (Enter Command)
If a holding register write command (06h) or consecutive holding register write command (10h)
is used, the new register value will become effective but it will not be stored in the Inverter's
EEPROM memory. Accordingly, once the Inverter power is cut off the status will return to the
one effective before the holding register was changed.
To store the change to the holding register in the Inverter's EEPROM memory, issue an Enter
command according to the method specified below. When the control parameters are
changed, the motor parameters must be re-calculated.In this case, also perform recalculation
with the Enter command.
Issuing Method for the Enter Command
Use a Holding Register Write command (06h) to write into the holding register for Enter
command (0900h). At this time, the value to be written into the holding register (0900h) is as
follows.
Note. If any of the following parameters is changed, the motor parameters must be recalculated. In this
case, the motor parameters can be recalculated by writing 0000h or 0002h into the Enter command
holding register.
Parameter List Requiring Motor Parameter Recalculation
Note 1. The Inverter returns a response to the host when it receives an Enter command, and then executes
EEPROM memory write. You can check whether the data is being written by monitoring the data
writing signal (coil number 0049h).
Note 2. Since the Inverter's EEPROM memory has a limit for the number of rewrites (approx. 100,000
times), the Inverter life may be shortened if Enter commands are frequently used.
Set value Description
0000 Motor parameter recalculation
0001 Set value storage
0002 to FFFF Motor parameter recalculation and set value storage
Parameter No. Function name Parameter No. Function name
A003/A203 Base Frequency H003/H203 Motor Capacity
A004/A204 Maximum Frequency H004/H204 Motor Pole Number
A044/A244 Control Method H005/H205 Speed Response
A082/A282 Motor Incoming Voltage
Selection
H020/H220 to H024/H224 Motor Parameters
b112 Free V/f Frequency 7 H030/H230 to H034/H234 Motor Parameters
(Auto-tuning)
H002/H202 Motor Parameter
To Next Page
Loading...
Need help?
General