Hitachi SJ300 Series - Manual (Page 34)

Chapter 4 – Adjustment
4.2 Setting and Adjustment of Motor Constants
When using vector control, the motor parameters shown below must be entered into the inverter
to obtain optimal performance. This is normally done via the auto-tuning procedure described in
Appendix A, whereby the key parameters are measured automatically. This procedure must be
performed before initial operation of the elevator. For elevator applications the specific auto-tune
procedure used depends on whether or not the cable can be disconnected from the motor. Once
auto-tuning is completed, certain of the parameters must be manually fine tuned to obtain the
smoothest possible ride characteristics. The procedure in Appendix A is the preferred method to
use.
Manual Procedure for Setting Motor Constants
If for any reason, auto-tuning cannot be used, then the following manual procedure can be used
to achieve suitable performance.
1. Motor Base Frequency (A003) and motor maximum frequency(A004)
Set the Motor base frequency and maximum frequency setting.
2. Motor AVR Voltage and Output Voltage Gain.
Set the motor AVR voltage and gain setting to match the motor nameplate data.
Some inverter duty motors may have special voltage ratings. Set the parameters
as follows:
Motor AVR votage (A082) x Output voltage gain (A045) = Motor rated voltage
Caution: Setting the incorrect voltage may result in motor overheating.
3. Motor Capacity（H003）
Select appropriate kilowatt capacity for the connected motor.
4. Motor Poles (H004)
Select the motor poles. For the default motor setup, items 5 to 9 below are
automatically configured depending on the settings of items 3 and 4 above.
5. Motor Constant R1 (H020 or H030)
Input the primary resistance per phase based on a Y-connection. Motor constants
for a delta connection should be converted dividing by
3
.
6. Motor Constant R2 (H021 or H031)
Input the secondary resistance per phase based on a Y-connection. Motor
constants for a delta connection should be converted dividing by
3
.
7. Motor constant L (H022 or H032)
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