YASKAWA F7 User Manual page 199

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Parameter Parameter Name
No. Digital Operator Display
Output Phase Loss
L8-07 Protection
Ph Loss Out Sel
Output Ground Fault
L8-09 Detection Selection
Ground Fault Sel
Heatsink Cooling Fan
L8-10 Operation Selection
Fan On/Off Sel
Heatsink Cooling Fan
L8-11 Operation Delay Time
Fan Delay Time
Ambient Temperature
L8-12 Setting
Ambient Temp
OL2 Characteristic
L8-15 Selection at Low Speeds
OL2 Sel @ L-Spd
Soft CLA Selection
L8-18
Soft CLA Sel
Cooling Fan OH1
L8-32
Detection
<3021>
OH1 Detect Sel
Hunting Prevention
n1-01 Selection
Hunt Prev Select
Hunting Prevention Gain
n1-02 Setting
Hunt Prev Gain
Speed Feedback
Detection Control
n2-01
(AFR) Gain
AFR Gain
Speed Feedback
Detection Control (AFR)
n2-02
Time Constant
AFR Time
Speed Feedback
Detection Control (AFR)
n2-03
Time Constant 2
AFR Time 2
Denotes that parameter can be changed when the Drive is running.
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Table A.1 F7 Parameter List (Continued)
Description
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
Enables and disables the Drive's output ground fault detection.
0: Disabled
1: Enabled
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.)
This parameter sets the delay time for the cooling fan turn off after
the run command is removed when L8-10 = 0.
When the Drive is installed in an ambient temperature exceeding its
rating, the Drive overload (OL2) protection level is adjusted.
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)
Enables and disables the software current limit function. Consult
the factory before disabling.
0: Disabled
1: Enabled
0: Disabled (FAN minor fault detection)
1: Enabled (OH1 major fault detection)
Hunting Prevention
If the motor vibrates while lightly loaded, hunting
prevention may reduce the vibration.
0: Disabled
1: Enabled
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.
AFR Tuning
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.
Sets the time constant to control the rate of change in the speed
feedback detection control.
Sets the time constant to control the amount of change in the speed
at low speed.
Parameters A - 34
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Control Method
Setting Factory
V/F
Range Setting
V/F
w/PG
0 to 1 1 A
0 to 1 1 A
0 to 1 0 A
0 to 300 60sec A
45 to 60 45°C A
0 to 1 0 A
0 to 1 1 A
0, 1 1 A
0 to 1 1 A
0.00 to
1.00 A
2.50
0.00 to
1.00 -
10.00
0 to 2000 50ms -
0 to 2000 750ms -
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Open
Flux
Loop
Vector
Vector
A A A
A A A
A A A
A A A
A A A
A A A
A A A
A A A
A - -
A - -
- A -
- A -
- A -