Yaskawa iQpump Controller Programming Manual - Manual (Page 130)

130 YASKAWA TM.iQp.07 iQpump Controller Programming Manual
◆ L8-18 Soft CLA Selection
The Soft CLA (software current limit level) is an iQpump drive protection function that will limit the drive’s output current. The iQpump
drive limits the output current by reducing the output frequency whenever the current exceeds 110% of the inverter rated current If the
current level drops below the Soft CLA level, then normal operation will continue.
If the software current limit is disabled (L8-18 = “0: Disabled”), the iQpump drive may trip on an OC fault if the load is prohibitively
large or the acceleration is too short. For proper iQpump drive protection and operation leave the Soft CLA function enabled.
◆ L8-19 Overheat Frequency Reference Reduction Level
Setting Range: 0.0 ~ 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 and 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 drive.
Parameter L8-19 is set in percentage of maximum frequency (E1-04).
Setting Description
0 Disabled
1 Enabled ( factory default )