Senlan Hope800 Series Manual page 67

Setting 11: Enabled
range Note: this parameter is automatically set to 00 after initialization.
F0-11 restores parameters to the factory settings (except the fault history, which can be cleared by
FP-20).
F0-12
Setting 0: V/F control without PG
range 3: Vector control with PG
Motor control mode:
F0-12＝0: open-loop V/F control. The torque output capacity can be improved by torque boost, and the
mechanical characteristics and speed control accuracy can be improved by slip compensation.
F0-12＝1: closed-loop V/F control. This mode has a high steady-state speed accuracy, and is especially
suited for applications where the encoder is not directly installed on the motor shaft and the accurate speed
control is needed.
F0-12＝2: speed sensor-less vector control. This mode has good mechanical characteristics. It can be
used for applications where there is a high demand for driving performance and it is not convenient to install
an encoder. Torque control can be achieved under this mode.
F0-12＝3: speed sensor vector control. This mode has the highest dynamic performance and steady-state
accuracy. It is mainly used for high-performance control such as high-accuracy speed control and simple servo
control. Torque control can be achieved under this mode, with high control accuracy both at low speeds and in
generating state.
F0-12＝4: voltage and frequency can be regulated separately.
Attentions for vector control
1. Vector control is usually used in cases where one inverter controls one motor. It also can be used to
control multiple motors that have the same model and parameters and are connected by a same shaft,
however, you should perform the parameter auto-tuning when these motors are connected together, or
you can manually input the equivalent parameters when these motors are connected in parallel.
2. Motor parameter auto-tuning or accurate motor parameter input is needed for motor dynamic modeling
and field-oriented control algorithm.
3. The capacity of the motor and inverter must match each other. The motor rated current should not less
than 1/4 of the inverter rated current; too low value would harm the control performance.
4. ASR parameters must be properly set to ensure the steady-state performance and dynamic performance
of speed control.
5. It is recommended that the motor pole number not be greater than eight, and vector control not be used
for double-cage motors, current-displacement motors or torque motors.
V/F control is required in following cases:
1. One inverter drives multiple motors simultaneously (the motors have uneven loads or different
parameters or capacities).
2. Load curren is less than 1/4 of the inverter rated current.
3. No load is connected to the inverter (e.g. during test).
4. Inverter output is connected to the transformer.
Danger
: in the control mode with PG, the PG parameters must be set correctly (see page 105 for
22: Enabled(except communication parameters)
Motor control mode
1: V/F control with PG
4: V/F separate control
6 Parameter Description
Default 0
2: Vector control without PG
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