Inovance MD500T75G - Page 188

7. Description of Parameters MD500 User Manual
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Function Code Parameter Name Setting Range Setting
F0-03 Main frequency reference
setting channel selection
0: Digital setting (non-
retentive at power down)
1: Digital setting (retentive
at power down)
2: AI1
3: AI2
4: AI3
5: Pulse reference
6: Multi-reference
7: Simple PLC
8: PID
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F0-10 Max. frequency 5.00 to 500.00 Hz 50.00 Hz
Keep the same setting of this
parameter for the master and slave.
F0-17 Acceleration time 1 0.0 to 6500.0s Keep the same setting of this
parameter for the master and slave.
F0-18 Deceleration time 1 0.0 to 6500.0s Keep the same setting of this
parameter for the master and slave.
F8-15 Droop rate 0.00 to 10.00 Hz 1.00 Hz
A0-00 6SHHG7RUTXHFRQWUROVHOHFWLRQ 0: Speed control
1: Torque control
0
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Droop Control
The droop control function aims at balancing the load level of two motors that drive the same load. This function is required only
when both master and slave are in speed control.
A proper droop rate is gradually obtained during the drive running. Therefore, do not set F8-15 to a very large value. Otherwise, the
steady speed will decline obviously when the load is very large. You must set this parameter in both master and slave.
Figure 7-58 Relationship between the droop rate and output torque
Droop rate
(Hz)
Output
torque (%)
0
100%
ƕ Droop speed = rated motor frequency x output torque x droop rate
ƕ Actual AC drive frequency = frequency reference - droop speed
Suppose that F8-15 is set to 10%, the rated motor frequency is 50 Hz, and the output torque is 50%. The actual drive frequency = 50
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