Lenze i550

4.2 Inial switch-on and funconal test
Drive behaviour by default
By default, the V/f characterisc control with a linear characterisc is preset as motor control
for asynchronous motors. The V/f characterisc control is a motor control for convenonal
frequency inverter applicaons. It is based on a simple and robust control mode for the opera-
on of asynchronous motors with a linear or square-law load torque characterisc (e.g. fan).
Because of the minimal parameterisaon eort, such applicaons can be commissioned easily
and quickly.
The default sengs of the parameters ensure that the inverter is ready for operaon imme-
diately and the motor works adequately without further parameterisaon if an inverter and
an asynchronous motor* Hz asynchronous machine with matching performances are
assigned to each other.
* Depending on the device/mains frequency either 50-Hz asynchronous motor or 60-Hz asyn-
chronous motor.
Funconal test
Target: the motor connected to the inverter should rotate as quickly as possible.
Requirements:
•
The connected motor matches the inverter in terms of power.
•
The parameter sengs correspond to the state upon delivery.
1.Preparaon
1. Wire the power connecons. See the mounng and switch-on instrucon for more
details.
2. Wire digital inputs X3/DI1 (start/stop), X3/DI3 (reversal) and X3/DI4 (frequency preset
20 Hz).
3. Do not connect terminal X3/AI1 (analog setpoint selecon) or connect it to GND.
Start/
Stop
1 DI 3 DI 4 DI
24V
X3
20 Hz
2.Switch on mains and check readiness for operaon
1. Switch on mains voltage.
2. Observe LED status displays "RDY" and "ERR" on the front of the inverter:
a) If the blue "RDY" LED is blinking and the red "ERR" LED does not light up, the inverter
is ready for operaon. The controller is inhibited.
You can now start the drive.
b) If the red "ERR" LED is lit permanently, a fault is pending.
Eliminate the fault before you carry on with the funconal test.
Commissioning
Inial switch-on and funconal test
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