YASKAWA TM.iQp.07 iQpump Controller Programming Manual 129
◆ L8-11 Heatsink Cooling Fan Operation Delay Time <0033>
Setting Range: 0 ~ 300 s
Factory Default: 300 s
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 1.105
Figure 109. Heatsink Cooling Fan Operation Timing Diagram
◆ L8-12 Ambient Temperature Setting
Setting Range: 113 ~ 140 °F (45 ~ 60 °C)
Factory Default: 113 °F (45 °C)
Set parameter L8-12 to the temperature °F (°C) of the area in which the iQpump drive is mounted. If L8-12 exceeds the actual rated
ambient temperature of the iQpump drive 113 °F (45 °C), the OL2 fault level will be de-rated as shown in Figure 110. below. This will
allow the user to trade-off lighter drive loading for operation in a higher ambient temperature.
Figure 1.106
Figure 110. Ambient Temperature Derating Curve
◆ L8-15 OL2 Characteristic Selection at Low Speeds
At very low speeds (6 Hz and below) and very high current levels it can be possible to damage output transistors. Therefore the factory
default setting of L8-15 is to shorten the time before an OL2 fault will occur during low speed / high load situations (L8-15 = “1:
Enabled”).
Setting Description
0Disabled
1 Enabled (L8-18 is active) (
factory default)
TIME
OFF (OPEN)
ON (CLOSED)
OFF (OPEN)
ON (CLOSED)
OR
BaseBlock
OFF (OPEN)
ON (CLOSED)
o
o
Ambient Temp.
L8-12
OL2 Fault Level
113
o
F
(45
o
C)
(60
o
C)
140
o
F
(522 pages)
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