Lenze i700 User Manual

Lenze · i700 servo inverter · reference manual · DMS 3.0 EN · 06/2016 · TD06 150
5 Motor control & motor settings
5.14 Parameterising the V/f characteristic control
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
5.14.2 Torque increase in the lower speed range ("Boost" function)
This function that can be activated is used if a comparatively high starting torque has to be provided
for. This function ensures that the required motor current is maintained in the lower speed range.
• The voltage vector control is activated by the selection of a current setpoint.
• For the automatic calculation of the control parameters, the "Calculate Imin controller" function
is provided via object 0x2822
(or 0x3022 for axis B).
0x2B04 | 0x3304 - VFC: Voltage vector control - setpoint current
0x2B05 | 0x3305 - VFC: Voltage vector control parameter
 Note!
The boost function described here adds to the voltage boost.
• Only utilise one of the two "Boost" functions.
Recommendation:
Torque increase in the lower speed range
Take into consideration that the increased current at low speeds also entails higher heat
losses of the motor.
Current setpoint for voltage vector control
• If "0.00 A" are set, the voltage vector control is deactivated.
• When the current setpoint is defined, provide a reserve of 20 % to prevent a motor stalling caused by sudden
additional loads.
• Example for starting torque = rated motor torque:
The current setpoint must be set to approx. 120 % of the load current.
Setting range (min. value | unit | max. value) Lenze setting
0.00 A 500.00 0.00 A
 Write access  CINH  OSC  P  RX  TX Scaling: 1/100 UNSIGNED_32
Sub. Name Lenze setting Data type
1 VFC: Voltage vector controller - gain 148.21 V/A UNSIGNED_32
2 VFC: Voltage vector controller - reset time 3.77 ms UNSIGNED_32
Subindex 1: VFC: Voltage vector controller - gain
Gain for voltage vector control
Setting range (min. value | unit | max. value) Lenze setting
0.00 V/A 750.00 148.21 V/A
 Write access  CINH  OSC  P  RX  TX Scaling: 1/100 UNSIGNED_32
Subindex 2: VFC: Voltage vector controller - reset time
Reset time for voltage vector control
Setting range (min. value | unit | max. value) Lenze setting
0.01 ms 2000.00 3.77 ms
 Write access  CINH  OSC  P  RX  TX Scaling: 1/100 UNSIGNED_32

Lenze i700 Specifications

General

Control Type	Vector control, V/f control
Safety	STO (Safe Torque Off)
Protection Class	IP20
Frequency	50/60 Hz
Communication Interfaces	CANopen
Cooling	Air cooled
Protection Features	Overvoltage, Undervoltage
Ambient Temperature	-10°C to +45°C
Frequency Range	0 Hz to 300 Hz
Supply Voltage	3-phase AC