YASKAWA AC Drive-A1000 User Manual

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n8-55: Load Inertia (OLV/PM)
Note:
PM motor control modes are not available on 600 V class drives, CIMR-Ao5oooooooo.
Sets the ratio between motor inertia and the inertia of the connected machinery. If this value is set too low, the motor may not
start very smoothly and trigger an STo (Motor Step-Out) fault.
Increase this setting for large inertia loads or to improve speed control response. A high setting with low inertia load may
cause oscillation.
No. Name Setting Range Default
n8-55 Load Inertia 0 to 3 0
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n8-57: High Frequency Injection (AOLV/PM)
Note:
PM motor control modes are not available on 600 V class drives, CIMR-Ao5oooooooo.
Injects a high frequency into the motor to detect motor speed.
No. Name Setting Range Default
n8-57 High Frequency Injection 0, 1 0
Setting 0: Disabled
Disable n8-57 with SPM motors. The speed control range will be limited to approximately 1:20.
Setting 1: Enabled
Enable n8-57 with IPM motors. This allows precise speed detection in a speed control range of approximately 1:100.
Note: 1. This function generates some audible noise in the motor up to a certain speed.
2. Set E1-09 to 0.0 when using zero speed control.
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n8-62: Output Voltage Limit
Sets the output voltage limit to prevent voltage saturation. Do not set this value higher than the actual input voltage.
No. Name Setting Range Default
n8-62 Output Voltage Limit 0.0 to 661.3 Vac 575 Vac
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n8-65: Speed Feedback Detection Control Gain during ov Suppression (OLV/PM)
Note:
PM motor control modes are not available on 600 V class drives, CIMR-Ao5oooooooo.
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. Name Setting Range Default
n8-65
Speed Feedback Detection Control Gain during ov Suppression
(OLV/PM)
0.00 to 10.00 1.50
5.9 n: Special Adjustments
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
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Parameter Details

YASKAWA AC Drive-A1000 Specifications

General

Brand	YASKAWA
Model	AC Drive-A1000
Category	Controller
Language	English