YASKAWA GA800 Technical Reference page 622

11.11 L: Protection Functions
No.
Name
(Hex.)
L8-05 Input Phase Loss
Protection Sel
(04B1)
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)
L8-20 Control Fault & Step Out
Detect
(04C0)
Expert
622
V/f CL-V/f OLV CLV AOLV
Sets the function to enable and disable input phase loss detection.
Note:
The default setting and setting range is different for different models.
• 200 V Class and 400 V Class
Default: 1
Setting range: 0, 1
• 6-Phase/12-Pulse 400 V Class
Default: 4
Setting range: 0 - 4
The software version for 6-Phase/12-Pulse drive is PRG: 09015 and later. The "PRG"
column on the nameplate on the right side of the drive identifies the software version.
You can also use U1-25 [SoftwareNumber Flashr] to identify the software version.
0 : Disable
1 : Enabled
4 : Enabled, with Hardware Detection
V/f CL-V/f OLV CLV AOLV
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 in these conditions:
• The motor rated current is very small compared to the drive rating.
• The drive is operating a PM motor with a small load.
0 : Disabled
1 : Fault when one phase is lost
2 : Fault when two phases are lost
V/f CL-V/f OLV CLV AOLV
Sets the function to enable and disable ground fault protection.
0 : Disabled
1 : Enabled
V/f CL-V/f OLV CLV AOLV
Sets operation of the heatsink cooling fan.
0 : During Run, w/ L8-11 Off-Delay
1 : Always On
2 : Temperature-Dependent Fan Ctrl.
V/f CL-V/f OLV CLV AOLV
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].
V/f CL-V/f OLV CLV AOLV
Sets the ambient temperature of the drive installation area.
V/f CL-V/f OLV CLV AOLV
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.
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)
V/f CL-V/f OLV CLV AOLV
Set the software current limit selection function to prevent damage to the main circuit
transistor caused by too much current.
0 : Disabled
1 : Enabled
V/f CL-V/f OLV CLV AOLV
Sets the ratio at which the drive derates the frequency reference during an oH alarm.
V/f CL-V/f OLV CLV AOLV
Sets operation after the drive detects a CF fault when A1-02 = 4 [Control Method
Selection = Advanced Open Loop Vector].
0 : Disabled
1 : CF/STPo Detection Enabled
2 : CF ALM/Stop
Description
OLV/PM OLV/PM AOLV/PM CLV/PM EZOLV
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
YASKAWA SIEPC71061737D GA800 Drive Technical Reference
Default
Ref.
(Range)
Determined by o2-04 999
(0 - 4)
1 1000
(0 - 2)
Determined by o2-04 1000
(0, 1)
0 1001
(0 - 2)
60 s 1001
(0 - 300 s)
40 °C 506
(-10 °C - +50 °C)
1 1001
(0, 1)
0 1002
(0, 1)
0.8 1002
(0.1 - 0.9)
1 1002
(0 - 2)