Parameter Details
12
12.9 L: Protection Functions
YASKAWA SIEPC71061737D GA800 Drive Technical Reference 1001
■ L8-10: Heatsink Fan Operation Selection
No.
(Hex.)
Name Description
Default
(Range)
L8-10
(04B6)
Heatsink Fan Operation
Selection
Sets operation of the heatsink cooling fan.
0
(0 - 2)
0 : During Run, w/ L8-11 Off-Delay
The drive turns on the fan when a Run command is active.
When you release the Run command and the delay time set in L8-11 [Heatsink Fan Off-Delay Time] is expired, the
fan stops. This setting extends the fan lifetime.
1 : Always On
The fan turns on when you supply power to the drive.
2 : Temperature-Dependent Fan Ctrl.
The fan turns on when the drive detects that the main circuit is overheating.
■ L8-11: Heatsink Fan Off-Delay Time
No.
(Hex.)
Name Description
Default
(Range)
L8-11
(04B7)
Heatsink Fan Off-Delay
Time
Sets the length of time that the drive will wait before it stops the cooling fan after it cancels the Run
command when L8-10 = 0 [Heatsink Fan Operation Selection = During Run, w/ L8-11 Off-Delay].
60 s
(0 - 300 s)
■ L8-12: Ambient Temperature Setting
No.
(Hex.)
Name Description
Default
(Range)
L8-12
(04B8)
Ambient Temperature
Setting
Sets the ambient temperature of the drive installation area.
40 °C
(-10 °C - +50 °C)
The drive automatically adjusts the drive rated current to the best value as specified by the set temperature. Set the
ambient temperature of the area where you install the drive to a value that is more than the drive rating.
Refer to Derating Depending on Ambient Temperature on page 505 for information about derating depending on
ambient temperature.
■ L8-15: Drive oL2 @ Low Speed Protection
No.
(Hex.)
Name Description
Default
(Range)
L8-15
(04BB)
Drive oL2 @ Low Speed
Protection
Sets the function to decrease the drive overload level at which the drive will trigger oL2 [Drive
Overload] during low speed operation (6 Hz or slower) to prevent damage to the main circuit
transistors.
1
(0, 1)
Note:
Contact Yaskawa or your nearest sales representative before disabling this function at low speeds. If you frequently operate drives with high
output current in low speed ranges, it can cause heat stress and decrease the life span of drive IGBTs.
0 : Disabled (No Additional Derate)
The drive does not decrease the overload protection level.
1 : Enabled (Reduced oL2 Level)
When the drive detects oL2 during low speed operation, it automatically decreases the overload detection level.
At zero speed, the drive derates the overload by 50%.
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