YASKAWA HV600 Technical Reference page 344

5.8 L: Protection Functions
0 : During Run, w/ L8-11 Off-Delay
The drive turns on the fan when a Run command is active.
1 : Always On
The fan turns on when you supply power to the drive. When you release the Run command and the delay time set in
L8-11 [HeatsinkCoolingFan Off DelayTime] is expired, the fan stops. his setting extends the fan lifetime.
2 : On when Drive Temp Reaches L8-64
The fan turns on when the drive detects that the main circuit is overheating.
■
L8-11: Heatsink Fan Off-Delay Time
No.
Name
(Hex.)
L8-11 Heatsink Fan Off-Delay
Time
(04B7)
■
L8-12: Ambient Temperature Setting
No.
Name
(Hex.)
L8-12 Ambient Temperature
Setting
(04B8)
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 544
ambient temperature.
■
L8-15: Drive oL2 @ Low Speed Protection
No.
Name
(Hex.)
L8-15 Drive oL2 @ Low Speed
Protection
(04BB)
Note:
Contact Yaskawa or your nearest sales representative for consultation before disabling this function at low speeds. Frequent operation of
drives under conditions of high output current in low speed ranges may shorten the service life of the drive IGBT due to heat stress.
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%.
■
L8-18: Software Current Limit Selection
No.
Name
(Hex.)
L8-18 Software Current Limit
Selection
(04BE)
0 : Disabled
When the output current is at the software current limit value, the drive does not restrict the output voltage.
Note:
The drive may detect an oC [Overcurrent] when loads are particularly heavy or the acceleration time is particularly short.
1 : Enabled
When the output current is at the software current limit value, the drive decreases output voltage to decrease output
current.
344
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].
Sets the ambient temperature of the drive installation area.
Sets the function to decrease drive overload at low speeds to prevent damage to the main circuit
transistor during low speed operation (at 6 Hz or slower) to prevent oL2 [Drive Overloaded].
Set the software current limit selection function to prevent damage to the main circuit transistor
caused by too much current.
Description
Description
for information about derating depending on
Description
Description
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
Default
(Range)
300 s
(0 - 300 s)
Default
(Range)
40 °C
(Determined by L8-35)
Default
(Range)
1
(0, 1)
Default
(Range)
0
(0, 1)