3 overcurrent operation for servo drives 9400, 11 drive dimensioning – Lenze DSD User Manual

Page 349

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Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23

349

11

Drive Dimensioning

11.6

Inverters

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11.6.1.3

Overcurrent operation for Servo Drives 9400

The inverters are designed for two overcurrent modes:

• Cycle of 5 s

• Load period of 0.5 s with peak current 
• Recovery time of 4.5 s with limited current 

• Cycle of 3 min

• Load period of 1 min with peak current 
• Recovery time of 2 min with limited current 

After a load period with a peak current a recovery time has to follow. During the recovery time the

current may not exceed the value specified.
The values specified refer to the rated output current I

N,out

.

[11-20] Overcurrent capability for Servo Drives 9400 at 45 °C

Cycle of 5 s

 Peak current for 0.5 s
 Max. current during the recovery time for 4.5 s

Cycle of 180 s

 Peak current for 60 s
 Max. current during the recovery time for 120 s

t

0

100

2

0

1

3

0.5 s

4.5 s

60 s

120 s



‚

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