YASKAWA F7 Programming Manual page 141

L8-10 Heatsink Cooling Fan Operation Selection
Setting
0 Fan On-Run Mode (factory default)
1 Fan Always On
L8-11 Heatsink Cooling Fan Operation Delay Time
Setting Range: 0 to 300 Seconds
Factory Default: 300 Seconds
Parameters L8-10 and L8-11 allow the Drive programmer to customize the heatsink cooling fan operation. Parameter L8-10
determines whether the cooling fans are always ON whenever the Drive is powered (L8-10= "1: Fan Always On") or if the
cooling fans are only ON when the 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 when the Run command is removed, parameter L8-11 will cause the fans to continue cooling the Drive for the amount of
time programmed into L8-11 after the Run command is actually removed. The Drive can be programmed to allow the cooling
fan to run for up to 5 minutes (factory default) after the run command is removed.
Both parameters are intended to extend fan life while still providing sufficient cooling for proper Drive operation.
L8-12 Ambient Temperature Setting
Setting Range: 113 to 140
o
Factory Default: 113 F (45
Set parameter L8-12 to the temperature
ambient temperature of the Drive 113
allow the user to trade-off lighter drive loading for operation in a higher ambient temperature.
OL2 Fault Level
Description
Run
Command
Heatsink Fan
RUN
Fig. 97 Heatsink Cooling Fan Operation Timing Diagram
o o
F (45 to 60 C)
o
C)
o o
F ( C) of the area in which the Drive is mounted. If L8-12 exceeds the actual rated
o o
F (45 C), the OL2 fault level will be de-rated as shown in the figure below. This will
OL2 Rating
100%
80%
0
Fig. 98 Ambient Temperature Derating Curve
Programming 133
TIME
L8-11
o
o Ambient Temp.
113 F o
o 140 F
60 C
45 C
o
o
(60 C)
(45 C)
ON (CLOSED)
t
OFF (OPEN)
ON (CLOSED)
t
OFF (OPEN)
(L8-12)