KEB COMBIVERT F6 Programming Manual

Motor parameterization
© 2022 KEB Automation KG
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6.2.10.4 Torque limiting characteristic
6.2.10.4.1 Function
If the motor is overloaded, i.e. if a torque is required, beyond its limit torque, the
current controller reaches their voltage limit. Furthermore the maximum voltage
controller reduces the flux or the Id too strong and by way the maximum reachable
torque is also reduced.
Therefore the limiting characteristic becomes effective at higher speeds.
The maximum reachable torque is reduced approximately at asynchronous motors
to a 1/x ² function and at synchronous motors to a 1/x function. This is parameter-
ized in ds11.
This parameter is automatically adjusted with the setting in dr00 asynchronous mo-
tor or synchronous motor.
ds11
torque mode
0x240B
Bit
Function
Value
Plaintext
Notes
0…1
field weak curve
limit
0
1/x
Synchronous motor
1
1/x²
Asynchronous motor
6.2.10.4.2 DC link voltage dependence
The maximum achievable torque is dependent on the DC link voltage.
The DC link voltage is entered in dr28, valid for the limiting characteristic.
Index
Id-Text
Name
Function
0x221C
dr28
Uic reference voltage
Reference value of the DC link voltage for the definition of
the field weakening range and the limiting characteristic in
V.
With higher DC link voltages, the limiting characteristic would shift to higher
speeds, correspondingly lower DC link values lead to lower speeds.

KEB COMBIVERT F6 Specifications

General

Category	Controller
Series	COMBIVERT F6
Type	Frequency inverter
Output Voltage	0 to Input Voltage
Output Frequency	0 to 400 Hz
Frequency Range	0 to 400 Hz
Control Method	V/f control
Communication Interfaces	CANopen, PROFIBUS
Protection Class	IP20
Cooling	Natural cooling
Safety	Safe Torque Off (STO) according to EN 61800-5-2
Application	General industry, pumps, fans, conveyor systems
Protection Features	Overcurrent, overvoltage, undervoltage, overheating
Ambient Temperature	-10°C to +40°C
Enclosure Rating	IP20