Inverter Load Characteristic - Lenze i55AE125B Manual

Basic setting

Inverter load characteristic

7.2 Inverter load characteristic
The inverter has two different load characteristics: "Light Duty" and "Heavy Duty". The load
characteristic "Light Duty" enables a higher output current with restrictions regarding over-
load capacity, ambient temperature and switching frequency. This enables the motor required
for the application to be driven by a less powerful inverter. The selected load characteristic
depends on the application.
NOTICE
Load characteristic "Light Duty"
In order to prevent irreversible damage of the inverter/motor:
▶ Based on the configuration document, check whether the inverter can be operated with the
load characteristic "Light Duty".
▶ Comply with all data in the configuration document for this load characteristic and the cor-
responding mains voltage range. Among other things, this includes information on the type
of installation and required fuses, cable cross-sections, mains chokes and filters.
▶ Set parameters only in accordance with the following specifications.
Details
The following table compares the two load characteristics:
Duty selection
"Heavy Duty [0]"
Characteristics High dynamic requirements
Typical applications Main tool drives, travelling drives, hoist drives, winders,
forming drives, and conveyors.
Overload capacity 3 s/200 %, 60 s/150 %
For details see configuration document
If the inverter is reset to the default setting, the load characteristic is set to
"Heavy Duty [0]".
Parameter Name / value range / [default setting]
0x2D43:001 Inverter load characteristic: Duty selection
(P306.01) (Inv. load char.: Duty selection)
• Setting can only be changed if the inverter is inhibi-
ted.
0 Heavy Duty
1 Light Duty
Related topics
4Motor data
^ 164
4Current limits
^ 220
146
0x2D43:001 (P306.01)
Info
Selection of the load characteristic.
Further required settings:
• Set the motor data according to the motor.
• Set further parameters (e. g. current limits) according to the applica-
tion.
Load characteristic for high dynamic requirements.
Load characteristic for low dynamic requirements.
• The device overload monitoring (i*t) is adapted.
Observe the information in the configuration document for this load
characteristic.
"Light Duty [1]"
Low dynamic requirements
Pumps, fans, general horizontal materials handling tech-
nology and line drives.
Reduced overload
For details see configuration document
CAUTION!