Omron RX Series - Base Frequency; Maximum Frequency

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7 Detailed Functions
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
7-3 Basic Functions (Group A)
7
Set the inverter output (frequency and voltage) according to the motor rating. Note in particular that
setting the base frequency to lower than 50 Hz may cause motor burnout.
Be sure to set the rated frequency of the motor.
• In the Base Frequency (A003/A203/A303) and Motor Rated Voltage Selection (A082), set the inverter
output (frequency and voltage) to the motor rating.
• Setting the base frequency to 60 Hz or higher is regarded as a special motor setting. This may
require the use of a larger inverter capacity because the maximum applicable motor for the inverter is
different.
• Set the Motor Rated Voltage Selection (A082) according to the motor specifications. Note in
particular that setting the parameter to a value higher than specified in the motor specifications may
cause motor burnout.
• Set the maximum output frequency.
• The value set here is defined as the maximum value for external analog input (frequency reference)
(for example, 10 V if the setting range is 0 to 10 V).
• The maximum output voltage of the inverter from the base frequency to the maximum frequency is
the voltage set in the Motor Rated Voltage Selection (A082).
• The inverter cannot produce output voltage over the incoming voltage.
Base Frequency
Parameter No. Function name Data Default data Unit
A003 1st Base Frequency 30. to 1st Maximum Frequency (A004)
60. Hz
A203
2nd Base Frequency
*1
*1. To enable the switching to the 2nd/3rd control, allocate one of the Multi-function Input S1 to S8 Selection (C001
to C008) to 08 (SET) or 17 (SET3) and turn ON that terminal.
30. to 2nd Maximum Frequency (A204)
A303
3rd Base Frequency
*1
30. to 3rd Maximum Frequency (A304)
Related functions A004, A204, A304, A081, A082
Maximum Frequency
Output voltage
Output frequency [Hz]
Motor rated
voltage
selection
(A082)
Base frequency
(A003/A203/A303)