Notes On Special Applications; Hoist/Lifter; Fan In Sensorless Operating Modes - Lenze L-force 9400 Guía Para La Puesta En Marcha

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Notes on special applications

6.1

Hoist/Lifter


Danger!
The use in lifts is only permissible if safety is ensured by approved external
components!
When using the controllers in goods lifts or similar, use appropriate barriers (e.g.
protective grids and photoelectric barriers) to ensure that no person may be
under hanging loads.
For applications with hanging loads only the V/F control (VFCplus) with
secondary minimum current control is permissible as encoderless operating
mode! In this case oversizing of the drive is compulsory and the permissible
power range is limited to devices of up to 55 kW!
6.2

Fan in sensorless operating modes

Usually, fan applications in sensorless operating modes must be provided with the flying
restart circuit, for which the following two points must be observed:
 The flying restart process may not be carried out if the motor rotates with an extremely
high speed (above the rated speed) in reverse parameterised search direction.
 During the flying restart process, the current controller is activated. Therefore, the
current controller must also be adapted to the motor in case of the encoderless
operating modes as described in the following sections.
Adaptation of the current controller to a Lenze motor:
1. Select motor in the »Engineer«.
2. Optimise the switching performance of the inverter
3. Activate flying restart mode.

Software manual 9400 HighLine:
• Chapter "Motor interface"  Parameterisable additional function
EDB94AXX6954 DE/EN/FR/ES/IT 4.0
9400 HighLine | Commissioning guide
L
Notes on special applications
Hoist/Lifter
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