SSINVERTER SSI700, User Manual, Page: 76 / 148

SSI700 User Manual Description of Function Codes
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Property
Default Setting Range Parameter Name
Function
Code
Group P2: Vector Control Parameters
☆ 100% 50%–200% Vector control slip gain P2-07
In the vector control mode, the output of the speed loop regulator is torque current
reference. This parameter is used to filter the torque references. It need not be adjusted
generally and can be increased in the case of large speed fluctuation. In the case of motor
oscillation, decrease the value of this parameter properly.
If the value of this parameter is small, the output torque of the AC drive may fluctuate
greatly, but the response is quick.
Property
Default Setting Range Parameter Name
Function
Code
Group P2: Vector Control Parameters
☆
64 0–200
Vector control
overexcitation gain
P2-08
During deceleration of the AC drive, over-excitation control can restrain rise of the bus
voltage to avoid the overvoltage fault. The larger the over-excitation gain is, the better the
restraining effect is.
Increase the over-excitation gain if the AC drive is liable to overvoltage error during
deceleration. Too large over-excitation gain, however, may lead to an increase in output
current. Therefore, set this parameter to a proper value in actual applications.
Set the over-excitation gain to 0 in applications of small inertia (the bus voltage will not
rise during deceleration) or where there is a braking resistor.
Property
Default Setting Range Parameter Name
Function
Code
Group P2: Vector Control Parameters
☆
150% 0.0%–200.0%
Digital setting of torque
upper limit in speed
control mode
P2-09
☆
0
0: P2-10
1: AI1
2: AI2
3: Reserved
4: Pulse setting (DI5)
5: Communication setting
Torque upper limit
source in speed control
mode
P2-10
In the speed control mode, the maximum output torque of the AC drive is restricted by
P2-10. If the torque upper limit is analog, pulse or communication setting, 100% of the
setting corresponds to the value of P2-09, and 100% of the value of P2-09 corresponds to
the AC drive rated torque.
For details on the AI1, AI2 setting,see the description of the AI curves in group P4.
For details on the pulse setting, see the description of P4-28 to P4-32.
When the AC drive is in communication with the master, if P2-10 is set to 5
“communication setting”, P2-09 “Digital setting of torque upper limit in speed control
mode” can be set via communication from the master.
In other conditions, the host computer writes data -100.00% to 100.00% by the
communication address 0x1000, where 100.0% corresponds to the value of P2-09. The
communication protocol can be Modbus.
Default Setting Range Parameter Name
Function Code
2000 0~60000 Excitation adjustment proportional gain P2-13
1300 0~60000 Excitation adjustment integral gain P2-14
2000 0~60000 Torque adjustment proportional gain P2-15
1300 0~60000 Torque adjustment integral gain P2-16