Omron RX - 2, Руководство пользователя

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7 Advanced Settings
7 - 14 High-function General-purpose Inverter RX2 Series User’s Manual
Precautions for Correct Use
• When the revolution of the motor is hindered by such causes as the braking or the motor lock
caused by foreign objects, such hindrance may cause over current or the like. When no such
adjustment as ones mentioned above improves the state, checking the portion around the
motor may sometimes improves it.
• If an application of load results in a great amount of change in the inverter’s output frequency
monitor [dA-01], a function to automatically change the frequencies for the overload limiting
function, the momentary-stop non-stop function, the over voltage suppression function may
work depending upon the settings of the functions.
This function is used to adjust a motor that is hunting and vibrating. It searches a set range for a point
where the hunting stops and makes an adjustment.
When a single inverter drives multiple motors, setting the stability constant at 0 may improve the state.
When a load with large inertia such as a fan is rotated, decrementing the stabilization constant,
1st-motor [HA110] by 10% each time may improve the state.
When the motor capacity is smaller than the rated capacity of the inverter, incrementing the set value by
10% each time may improve the state. In contrast, when the motor capacity is larger than the rated
capacity of the inverter, decrementing the set value by 10% each time may improve the state.
Precautions for Correct Use
• If the motor is hunting and vibrating, check if appropriate settings are provided for the motor
capacity, the number of motor poles, the base frequency, the rated voltage, and the rated cur-
rent.
• Then conduct the auto-tuning to check if the hunting ends, and adjust the stability constant.
• Exemplar methods of reducing the hunting include the following methods:
1. Adjust the carrier speed setting, 1st-motor [bb101] by gradually decrementing it down to 2
kHz.
2. Adjust the output voltage gain, 1st-motor [Hb180] by gradually decrementing it down to
80%.
If no effect can be observed, restore the original values.
Precautions for Correct Use
Do not conduct a steady operation with a setting for the output voltage gain, 1st-motor [Hb180]
that exceeds 100%.
The motor may be burned.
7-2-7 Stabilization of Motor Rotation