PROGRAMMING GUIDE
SINUS PENTA
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34.1.8. TORQUE CONTROL (VTC AND FOC ONLY)
VTC and FOC controls allow controlling the drive with a torque reference instead of a speed reference. To do so, set [1:
Torque or 2: Torque with Speed Limit [FOC only] in the relevant parameter (C011 for motor 1, C054 for motor 2, C097
for motor 3).
In this way, the main reference corresponds to the motor torque demand and may range from C047 to C048 (Limits
Menu) for motor 1 (minimum and maximum torque expressed as a percentage of the motor rated torque). For motors 2
and 3, the parameters relating to min. and max. torque (C090, C091 and C133, C134) are included in the Limits Menu 2
and Limits Menu 3.
Using a 0020 drive connected to a 15kW motor, C048 is factory-set to 120% of the motor rated torque. If the max.
reference is applied (C143 = REF), the torque reference will be 120%.
If a 7.5kW motor is connected, C048 may exceed 200%; torque values exceeding 200% may be obtained based on the
value set in C048.
The motor rated torque results from the following formula:
C=P/ω
where P is the rated power expressed in W and ω is the rated speed of rotation expressed in radiants/sec.
Example: the rated torque of a 15kW motor at 1420rpm is equal to:
15000
C = –––––––––––– = 100.9 Nm
1420⋅2π/60
The starting torque is:
rated torque * 120% = 121.1 Nm
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