Toshiba Tosvert VF-AS1 - Manual (Page 77)

E6581301
E-11
5
5.6 Selecting control mode
RV : V/f control mode selection
[Parameter setting]
Title Function Adjustment range Default setting
RV V/f control mode selection
 : Constant torque characteristics
 : Voltage decrease curve
 : Automatic torque boost
 : Sensorless vector control 1
 : Sensorless vector control 2
 : V/f 5-point setting
 : PM control
 : PG feedback vector control 1
 : PG feedback vector control 2

1) Constant torque characteristics (Normal way of use)
Setting of V/f control mode selection RV= (Constant torque characteristics)
This is applied to loads with equipment like conveyors and cranes that require the same torque at low speeds as at
rated speeds.
Base frequency voltage 1
XNX
Output frequency [Hz]
XD
Base frequency XN
0
Ou
tp
u
t vol
ta
ge
[V]/[%]
* To increase the torque further, increase the setting value of the manual torque boost parameter XD.
⇒ For more details, refer to Section 5.7.
• Function
With “VF-AS1,” the V/f controls shown below can be selected.
0: Constant torque characteristics
1: Voltage decrease curve
2: Automatic torque boost *1
3: Sensorless vector control 1 *1
4: Sensorless vector control 2
5: V/f 5-point setting
6: PM control
7: PG feedback vector control 1
8: PG feedback vector control 2
(*1) “Automatic control” parameter automatically sets this parameter and auto-tuning 1 at a time.