Lenze 9400 Uživatelský manuál stáhnout pdf (Strana 108)

4 Drive interface

4.6 Device output power

108

Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06

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Reduced switching losses through switching frequency reduction

The advantage of a switching frequency reduction are the reduced switching losses in the

controller, which are monitored via an I x t evaluation.

• A reduced switching frequency enables a greater current-time area at the output than it would

be the case with a higher switching frequency. However, depending on the process, you always

have to make a compromise between the torque ripple and the output power.

4.6.2 Monitoring of the device utilisation

In C00064 the device utilisation (I x t) is displayed over the last 180 seconds in [%].

• If the value displayed in C00064

exceeds the warning threshold set in C00123, the error

message "device utilisation Ixt > C00123" is output and the fault response set in C00604

occurs

(default setting: "Warning").

• If the value displayed in C00064

exceeds 100 %, the error message "device utilisation Ixt

> 100 %" is output and the "Fault" error response occurs.

• The fault can only be reset if the value displayed in C00064

is < 95 % again.

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