5.9 n: Special Adjustments
210
YASKAWA ELECTRIC
SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
Setting 2: Between 1:30 and 1:50
The inertia ratio between the motor and the load is between 1:30 and 1:50. Set n8-55 to 2 if a STo fault occurs as a result
of impact load or sudden acceleration/deceleration when n8-55 = 1.
Setting 3: Beyond 1:50
The inertia ratio between the motor and the load is higher than 1:50. Set n8-55 to 3 if a STo fault occurs as a result of
impact load or sudden acceleration/deceleration when n8-55 = 2.
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n8-62: Output Voltage Limit (for PM OLV)
Sets the output voltage limit to prevent output voltage saturation. This value should not be set higher than the actual input
voltage.
■
n8-63/ n8-68: Output Voltage Limit Gain 1/2
n8-63 determines the gain level applied to the input voltage set in units of 0.01.
n8-68 determines a second gain level applied to the input voltage.
These parameters rarely need to be changed.
Note:
These parameters are valid form the software versions 6002 or later.
■
n8-65: Speed Feedback Detection Control Gain during ov Suppression (OLV/PM)
Sets the gain for internal speed feedback detection control when overvoltage suppression is active. Although this setting
rarely needs to be changed, adjustment may be necessary under the following conditions:
• Increase this setting if motor oscillation or hunting occurs when ov suppression is active.
• Decrease this setting in increments of 0.05 to decrease the drive responsiveness during ov suppression.
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n8-74: Id No Load Start (for PM OLV)
Sets Id current level 1 for light loads.
Note: 1.
This parameter is valid from software version 6002 or later.
2.
An Operator Programming Error (oPE) occurs if the setting value deviates from the following condition: n8-74
≤
n8-75
≤
n8-50.
■
n8-75: Id No Load End (for PM OLV)
Sets Id current level 2 for light loads.
Note: 1.
This parameter is valid from software version 6002 or later.
2.
An Operator Programming Error (oPE) occurs if the setting value deviates from the following condition: n8-74
≤
n8-75
≤
n8-50.
No.
<1> Values shown here are for 200 V class drives. Double values when using a 400 V class unit.
Name
Setting Range
Default
Output Voltage Limit
0.0 to 230.0 Vac
200 Vac
No.
Name
Setting Range
Default
n8-63
Output Voltage Limit Gain 1
0.00 to 100.00
1.00
n8-68
Output Voltage Limit Gain 2
0.50 to 1.50
0.95
No.
Name
Setting Range
Default
n8-65
Speed Feedback Detection Control Gain during ov Suppression
0.00 to 10.00
1.50
No.
Name
Setting Range
Default
n8-74
Id No Load Start
0.0 to 250.0%
30.0%
No.
<1> Setting range is determined as follows: (n8-74 + 0.1%) to (n8-50 - 0.1%).
Name
Setting Range
Default
n8-75
Id No Load End
50.0%
