YASKAWA T1000V Technical Manual page 210

5.9 n: Special Adjustments
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.
■ 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.
No.
n8-62
<1>
<1> Values shown here are for 200 V class drives. Double values when using a 400 V class unit.
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.
No.
n8-63
n8-68
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.
No.
n8-65 Speed Feedback Detection Control Gain during ov Suppression
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
No.
n8-74
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
No.
n8-75
<1> Setting range is determined as follows: (n8-74 + 0.1%) to (n8-50 - 0.1%).
210
Name
Output Voltage Limit
Name
Output Voltage Limit Gain 1
Output Voltage Limit Gain 2
Name
Name
Id No Load Start
Name
Id No Load End
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
Setting Range
0.0 to 230.0 Vac
Setting Range
0.00 to 100.00
0.50 to 1.50
Setting Range
0.00 to 10.00
≤
n8-75
Setting Range
0.0 to 250.0%
≤
n8-75
Setting Range
<1>
Default
200 Vac
Default
1.00
0.95
Default
1.50
≤
n8-50.
Default
30.0%
≤
n8-50.
Default
50.0%