Yaskawa iQpump Drive User Manual - Manual (Page 121)

5.1 iQpump Basic Programming Parameters
YASKAWA TM.iQp.01 iQpump Drive User Manual 121
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L8-19 Overheat Frequency Reference Reduction Level
Setting Range: 0.0 to 100.0% of maximum frequency
Factory Default: 20.0% of maximum frequency
When the heatsink temperature reaches the OH Pre-alarm level (L8-02) and the Overheat Pre-Alarm Operation Selection parameter is set
for Alarm and Reduce (L8-03 = “4: OH Alarm & Reduce”), the L8-19 parameter sets the amount of speed decrease that will be applied to
the Speed Command in order to lower the heatsink temperature. The decrease in speed will lower the current being switched and
conducted by the heat producing output transistors of the iQpump drive.
Parameter L8-19 is set in percentage of maximum frequency (E1-04).