YASKAWA HV600 Technical Reference page 638

9.11 L: Protection Functions
No.
Name
(Hex.)
L8-07 Output Phase Loss
Protection Sel
(04B3)
L8-09 Output Ground Fault
Detection
(04B5)
L8-10 Heatsink Fan Operation
Selection
(04B6)
L8-11 Heatsink Fan Off-Delay
Time
(04B7)
L8-12 Ambient Temperature
Setting
(04B8)
L8-15 Drive oL2 @ Low Speed
Protection
(04BB)
L8-18 Software Current Limit
Selection
(04BE)
L8-19 Freq Reduction @ oH
Pre-Alarm
(04BF)
L8-35 Installation Method
Selection
(04EC)
L8-38 Carrier Frequency
Reduction
(04EF)
L8-41 High Current Alarm
Selection
(04F2)
L8-97 Carrier Freq Reduce
during OH
(3104)
638
Sets the function to enable and disable output phase loss detection. The drive starts output
phase loss detection when the output current decreases to less than 5% of the drive rated
current.
Note:
The drive can incorrectly start output phase loss detection when te motor rated current
is very small compared to the drive rating.
0 : Disabled
1 : Fault when one phase is lost
2 : Fault when two phases are lost
Sets the function to enable and disable ground fault protection.
0 : Disabled
1 : Enabled
Sets operation of the heatsink cooling fan.
0 : During Run, w/ L8-11 Off-Delay
1 : Always On
2 : On when Drive Temp Reaches L8-64
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.
Note:
The setting range changes when the L8-35 [Installation Method Selection] setting
changes.
• When L8-35 = 0 or 2 [IP20/UL Open Type or IP20/UL Type 1]: -10 °C～+60 °C
• When L8-35 = 1 or 3 [Side-by-Side Mounting or IP55/UL Type 12]: -10 °C～+50 °C
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].
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)
1 : Enabled (Reduced oL2 Level)
Set the software current limit selection function to prevent damage to the main circuit
transistor caused by too much current.
0 : Disabled
1 : Enabled
Sets the ratio at which the drive derates the frequency reference during an oH alarm.
Sets the type of drive installation.
0 : IP20/UL Open Type
1 : Side-by-Side Mounting
2 : IP20/UL Type 1
3 : IP55/UL Type 12
Sets the carrier frequency reduction function. The drive decreases the carrier frequency
when the output current is more than a specified level.
1 : Enabled below 6 Hz
2 : Enabled for All Speeds
3 : Enable at Overload
Sets the function to cause an HCA [High Current Alarm] when the output current is more
than 150% of the drive rated current.
0 : Disabled
1 : Enabled
Sets the function to decrease carrier frequency during oH pre-alarm.
0 : Disabled
1 : Enabled
Description
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
Default
Ref.
(Range)
1 343
Determined by o2-04 343
(0, 1)
0 343
(0 - 2)
300 s 344
(0 - 300 s)
40 °C 344
(Determined by L8-35)
1 344
(0, 1)
0 344
(0, 1)
20.0% 345
(10.0 - 100.0%)
2 345
(0 - 3)
Determined by o2-04 345
(1 - 3)
0 346
(0, 1)
0 346
(0, 1)