Yaskawa F7 Drive User Manual - Manual (Page 199)

Parameters A - 34
L8-07
Output Phase Loss
Protection
Ph Loss Out Sel
Selects the detection of output current open-phase.
When applied motor capacity is too small for Drive capacity,
output phase loss may be detected inadvertently. In this case, set to
0.
0: Disabled
1: 1-phase Loss Detection
2: 2/3-phase Loss Detection
0 to 1 1 A A A A
L8-09
Output Ground Fault
Detection Selection
Ground Fault Sel Enables and disables the Drive’s output ground fault detection.
0: Disabled
1: Enabled
0 to 1 1 A A A A
L8-10
Heatsink Cooling Fan
Operation Selection
Fan On/Off Sel
Controls the heatsink cooling fan operation.
0: Fan On-Run Mode - Fan will operate only when the Drive is
running and for L8-11 seconds after RUN is removed.
1: Fan Always On - Cooling fan operates whenever the Drive is
powered up.)
0 to 1 0 A A A A
L8-11
Heatsink Cooling Fan
Operation Delay Time
Fan Delay Time
This parameter sets the delay time for the cooling fan turn off after
the run command is removed when L8-10 = 0.
0 to 300 60sec A A A A
L8-12
Ambient Temperature
Setting
Ambient Temp
When the Drive is installed in an ambient temperature exceeding its
rating, the Drive overload (OL2) protection level is adjusted.
45 to 60 45°C A A A A
L8-15
OL2 Characteristic
Selection at Low Speeds
OL2 Sel @ L-Spd
This parameter assists in protecting the output transistors from
overheating when output current is high and output frequency is
low (6Hz and less).
0: Disabled
1: Enabled (L8-18 is active)
0 to 1 0 A A A A
L8-18
Soft CLA Selection
Soft CLA Sel
Enables and disables the software current limit function. Consult
the factory before disabling.
0: Disabled
1: Enabled
0 to 1 1 A A A A
L8-32
<3021>
Cooling Fan OH1
Detection
OH1 Detect Sel
0: Disabled (FAN minor fault detection)
1: Enabled (OH1 major fault detection)
0, 1 1 A A A A
Hunting Prevention
n1-01
Hunting Prevention
Selection
Hunt Prev Select
If the motor vibrates while lightly loaded, hunting
prevention may reduce the vibration.
0: Disabled
1: Enabled
0 to 1 1 A A - -
n1-02
Hunting Prevention Gain
Setting
Hunt Prev Gain
Sets the gain for the Hunting Prevention Function.
If the motor vibrates while lightly loaded and n1-01=1, increase the
gain by 0.1 until vibration ceases.
If the motor stalls while n1-01=1, decrease the gain by 0.1 until the
stalling ceases.
0.00 to
2.50
1.00 A A - -
AFR Tuning
n2-01
Speed Feedback
Detection Control
(AFR) Gain
AFR Gain
Sets the internal speed feedback detection control gain in the
automatic frequency regulator (AFR).
Normally, there is no need to change this setting.
Adjust this parameter as follows:
• If hunting occurs, increase the set value.
• If response is low, decrease the set value.
Adjust the setting by 0.05 units at a time, while checking the
response.
0.00 to
10.00
1.00 - - A -
n2-02
Speed Feedback
Detection Control (AFR)
Time Constant
AFR Time
Sets the time constant to control the rate of change in the speed
feedback detection control.
0 to 2000 50ms - - A -
n2-03
Speed Feedback
Detection Control (AFR)
Time Constant 2
AFR Time 2
Sets the time constant to control the amount of change in the speed
at low speed.
0 to 2000 750ms - - A -
Denotes that parameter can be changed when the Drive is running.
Table A.1 F7 Parameter List (Continued)
Parameter
No.
Parameter Name
Digital Operator Display
Description
Setting
Range
Factory
Setting
Control Method
V/F
V/F
w/PG
Open
Loop
Vector
Flux
Vector