Dual rating

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 overload capacity, ambient temperature and switching frequency. As a result, the motor can be driven by a less powerful inverter. The selected load characteristic depends on the application.

NOTICE

Load characteristic "Light Duty"

In order to avoid irreversible damage to the inverter/motor:

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Based on the configuration document, check whether the inverter can be operated with the load characteristic "Light Duty".

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Comply with all data in the configuration document for this load characteristic and the corresponding mains voltage range. Among other things, this includes information on the type of installation and required fuses, cable cross-sections, mains chokes and filters.

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Set the parameters only in accordance with the following specifications .

Details

The following table compares the two load characteristics:

	Duty selection 0x2D43:001 (P306.01)
	"Heavy Duty [0]"	"Light Duty [1]"
Characteristics	High dynamic requirements	Low dynamic requirements
Typical applications	Main tool drives, travelling drives, hoist drives, winders, forming drives, and conveyors.	Centrifugal pumps, fans, general horizontal materials handling technology, line drives and centrifugal pumps.
Overload capacity	3 s/200 %, 60 s/150 % For details see configuration document	Reduced overload For details see configuration document

If the inverter is reset to the default setting, the load characteristic is set to "Heavy Duty [0]".

Parameter

Address	Name / setting range / [default setting]		Information
0x2D43:001 (P306.01)	Inverter load characteristic: Duty selection (Inv. load char.: Duty selection) – Setting can only be changed if the inverter is disabled.		Selection of the load characteristic. Further required settings: – Set the data of the motor used. – Set application-specific parameters such as current limits.
	0	Heavy Duty	Load characteristic for high dynamic requirements.
	1	Light Duty	Load characteristic for low dynamic requirements. – The device overload monitoring (i*t) is adapted. CAUTION! Observe the information in the configuration document for this load characteristic.