iPAK2 User Guide
61
3
See Duty cycle limiter
9. Duty cycle limiter
Duty is calculated over a 2 second averaging time. The inverter rating applies at up to 20% duty. At
higher duties the maximum output current must be de-rated as shown by the curve below:
The iPAK2 protects against weld sequences that would exceed the allowable duty cycle. In this
event the inverter will
Stop at the end of a spot weld
Stop immediately in a seam weld
The READY signal will be de-asserted and an error message given. Further initiation is prohibited.
Perform a ‘RESET FAULT’ operation to clear.
0.00
0.20
0.40
0.60
0.80
1.00
1.20
0 102030405060708090100
% Du ty
De-rating factor
To Next Page
Loading...
