Lenze 8200 series User Manual

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Commissioning

5-14 UOMu_^MVMO

3.Set the Vmin boost

(C016).

D Load-independentboost of the motor voltage for field frequencies below the

U/f-rated frequency. You can thus optimize the torque performance of the inverter

drive.

D It is absolutely necessar y to adapt the asynchronous motor used, since otherwise,

the motor can be destroyed by overtemperatue:

Adjustment

Please note the thermal characteristic of the connected motor under small field

frequencies:

D Usually, standard asynchronous motors with insulation class B can be operated for a

short time with rated current and frequencies between 0Hz

≤ f

≤25Hz.

D Please ask the motor manufacturer for the exact setting values for the motor

current.

A Operate the motor in idle running with a slip frequency of f

≈:

-P

mot

≤7.5 kW: f

≈5Hz

-P

mot

>7.5 kW: f

≈2Hz

B Increase V

min

until you reach the following motor current:

- Motor in s hort-term operation at 0Hz

≤f

≤ 25Hz:

with self-ventilated motors: I

motor

≤ I

N motor

with forced-ventilated motors: I

motor

≤ I

N motor

- Motor in permanent operation at 0Hz ≤f

≤ 25Hz:

with self-ventilated motors I

motor

≤ 0.8 ¡I

N motor

with forced-ventilated motors: I

motor

≤ I

N motor

4.Set slip compensation

(

)

Rough setting by means of the motor data:

(C021).

ë =

êëóå

− å

êëóå

⋅ NMMB

êëóå

Çê

⋅ SM

s Slip constant (C021)

rsyn

synchronous motor speed [min

-1

]

rated speed to motor nameplate [min

-1

]

rated frequency to motor nameplate [Hz]

p Number of pole pairs

Precise setting:

Change C021 under constant load until the speed is near the synchronous speed.

If C021 is set to too high values, the drive may become instable (overcompensation).

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Questions and Answers:

C
callahananneAug 22, 2025
Why does my Lenze 8200 Inverter display 'OC1'?
- E
  elliottelizabethAug 22, 2025
  The Lenze Inverter displays 'OC1' due to a short circuit. Find the cause of the short circuit and check the cable. It can also be caused by excessive capacitive charging current of the motor cable. Use a motor cable which is shorter or of lower capacitance.

Lenze 8200 series Specifications

General

Category	Inverter
Output voltage range	0 V to input voltage
Control modes	vector control
Communication interfaces	RS485, CANopen, Profibus, Ethernet
Protection features	Overcurrent, overvoltage, undervoltage, short circuit, overtemperature
Relative humidity	95 % (non-condensing)
Protection class	IP20