Parameter List
3
3.11 L: Protection Functions
YASKAWA TOEPYAIGA8001B GA800 Drive Maintenance & Troubleshooting 233
No.
(Hex.)
Name Description
Default
(Range)
L8-09
(04B5)
Output Ground Fault
Detection
Sets the function to enable and disable ground fault protection.
0 : Disabled
1 : Enabled
Determined by o2-04
(0, 1)
L8-10
(04B6)
Heatsink Fan Operation
Selection
Sets operation of the heatsink cooling fan.
0 : During Run, w/ L8-11 Off-Delay
1 : Always On
2 : Temperature-Dependent Fan Ctrl.
0
(0 - 2)
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
(04B8)
Ambient Temperature
Setting
Sets the ambient temperature of the drive installation area.
40 °C
(-10 °C - +50 °C)
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.
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)
1
(0, 1)
L8-18
(04BE)
Software Current Limit
Selection
Set the software current limit selection function to prevent damage to the main circuit transistor
caused by too much current.
0 : Disabled
1 : Enabled
0
(0, 1)
L8-19
(04BF)
Freq Reduction @ oH Pre-
Alarm
Sets the ratio at which the drive derates the frequency reference during an oH alarm.
0.8
(0.1 - 0.9)
L8-20
(04C0)
Expert
Control Fault & Step Out
Detect
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
1
(0 - 2)
L8-27
(04DD)
Overcurrent Detection Gain
Sets the PM motor overcurrent detection level as a percentage of the motor rated current value.
Note:
Parameter A1-02 [Control Method Selection] selects which parameter is the motor rated current.
• A1-02 ≠ 8 [EZOLV]: E5-03 [PM Motor Rated Current (FLA)]
• A1-02 = 8: E9-06 [Motor Rated Current (FLA)]
300.0%
(0.0 - 1000.0%)
L8-29
(04DF)
Output Unbalance Detection
Sel
Sets the function to detect LF2 [Output Current Imbalance].
0 : Disabled
1 : Enabled
1
(0, 1)
L8-31
(04E1)
LF2 Detection Time
Sets the LF2 [Output Current Imbalance] detection time.
3
(1 – 100)
L8-35
(04EC)
Installation Method
Selection
Sets the type of drive installation.
0 : IP20/UL Open Type/Ex Heatsink
1 : Side-by-Side Mounting
2 : IP20/UL Type 1
3 : Finless
Determined by the drive
(0 - 3)
L8-38
(04EF)
Carrier Frequency Reduction
Sets the carrier frequency reduction function. The drive reduces the carrier frequency when the
output current is more than a specified level.
0 : Disabled
1 : Enabled below 6 Hz
2 : Enabled for All Speeds
Determined by A1-02, C6-
01 and o2-04
(0 - 2)
To Next Page
Loading...
