YASKAWA CR700, Техническое руководство, Страница: 877 / 886

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 Load Share Configuration
Use Load Share on the master with SA-01 = 1. Set the torque signal type with SA-03.
For the master, the Load Share output frequency can be monitored with U9-07, and the
torque reference signal can be monitored with U9-08. Load Share uses these values for the
slave. Use analog outputs or MEMOBUS/Modbus communications to input the values to the
slave.
The following diagram shows the configuration of Load Share for the master.
Figure 3.5 Master Control Block Diagram in Load Share
Use Load Share on the slave with SA-01 = 2. Set the torque signal type (SA-03) to the
same value as the master.
For the slave, Load Share slip compensation can be monitored with U9-09, Load Share
regulator output can be monitored with U9-10, and Load Share regulator input can be
monitored with U9-11.
Load Share automatically adjusts the output frequency on the slave based on the frequency
and torque signal input from the master to balance the load between the master and slave.
The torque signal input from the master is also used as the torque limit on the slave.
The following diagram shows the configuration of Load Share for the slave.
Figure 3.6 Control Block Diagram of Load Share Slave
Frequency
reference
Load Share SFS Output
Load Share Torque Output
Torque Signal Select
Internal torque
reference
Motor q-axis
current
Load Share
SFS Output
(Master: U9-07)
(Master: U9-08)
Load Share
Torque Output
Torque Signal
Select
Torque Filter
Time
Load Share Regulator
Input
Load Share Regulator
Load Share frequency
reference calculation
Load Share Regulator
Output
Internal
frequency
reference
Internal
torque limit
Load Share Slip Compensation
Load share output Filter Time
SA-05
Torque limit calculation
Torque limit
1 (Enabled)
0 (Disabled)
Torque Limit Select
Slip calculation