Yaskawa iQpump Drive User Manual - Manual (Page 120)

5.1 iQpump Basic Programming Parameters
120 YASKAWA TM.iQp.01 iQpump Drive User Manual
■
L8-07 Output Phase Loss Protection
<0033>
The output phase loss detection circuit monitors the DCCT and activates when one or more of the output phases are lost. The detection
circuit calculates the RMS current value (I
RMS
) for each of the phases and compares it with an internal output detection level. If I
RMS
decreases to or below the detection level for 10 seconds, an output phase loss (LF) fault occurs and the motor coasts to a stop.
■ L8-09 Output Ground Fault Detection Selection
The iQpump drive has a ground fault detection circuit that activates when the current to ground exceeds 50% of the iQpump Drive’s rated
output current. The current to ground is determined by comparing the measured current on each of the output phases. If the current to
ground is determined to be above 50% of the Drive’s rated output current the digital operator will display a GF and the iQpump Drive
will coast to stop.
■
L8-10 Heatsink Cooling Fan Operation Selection
Refer to L8-11 description.
■ L8-11 Heatsink Cooling Fan Operation Delay Time
<0033>
Figure 5.30
Setting Range: 0 to 300 sec
Factory Default: 300 sec
Figure 5.31
Parameters L8-10 and L8-11 allow the iQpump drive programmer to customize the heatsink cooling fan operation. Parameter L8-10
determines whether the cooling fans are always ON whenever the iQpump drive is powered (L8-10 = “1: Fan Always On”) or if the
cooling fans are only ON when the iQpump drive is in a Run condition (L8-10 = “0: Fan On-Run Mode”).
Parameter L8-11 is a delayed OFF for the cooling fan if L8-10 = “0: Fan On-Run Mode”. When the cooling fans are set to turn OFF is
when either the Run command is removed or the drive is in baseblock. The iQpump parameter L8-11 will cause the fans to continue
cooling the iQpump drive for the amount of time programmed into L8-11 after the Run command is actually removed or baseblocked
enabled. The iQpump drive can be programmed to allow the cooling fan to run for up to 5 minutes (factory default) after the run
command is removed or baseblock enabled.
Both parameters are intended to extend fan life while still providing sufficient cooling for proper iQpump drive operation.
Figure 5.32
Figure 5.49 Heatsink Cooling Fan Operation Timing Diagram
Setting Description
0 Disabled
1 Enabled (factory default)
Setting Description
0 Disabled
1 Enabled (factory default)
Setting Description
0 Fan On-Run Mode (factory default)
1 Fan Always On