Mitsumi electronic 55K Intelligent mode selection Pr, Pr intelligent mode selection

PARAMETERS

4.2.26 Intelligent mode selection (Pr. 60)

Pr. 60 "intelligent mode selection"

Related parameters

Pr. 0 "torque boost"

Pr. 7 "acceleration time" Pr. 8 "deceleration time" Pr. 13 "starting frequency"

Pr. 19 "base frequency voltage"

The inverter automatically sets appropriate parameters for operation.

•If you do not set the acceleration and deceleration times and V/F pattern, you can run the inverter as if appropriate values had been set in the corresponding parameters. This operation mode is useful to start operation immediately without making fine parameter settings.

•If the intelligent operation mode has been selected, entry of the jog signal or RT (second function selection) signal during an inverter stop starts ordinary operation, with priority given to jog operation or second function selection. After a start in the intelligent operation mode, neither the JOG signal nor the RT signal is accepted.

Parameter	Factory	Setting Range
Number	Setting
60	0	0, 3, 4, 9

<Setting>

Pr. 60	Operation Mode	Description	Automatically Set
Setting			Parameters
0	Ordinary operation		
	mode
	Optimum	Optimum operation can be carried out by fully utilizing the inverter
		capabilities in the continuous rating range.
	acceleration/
3		Self-learning automatically sets the corresponding parameters so that the	Pr. 0, Pr. 7, Pr. 8
	deceleration mode
		average current during acceleration/deceleration is equal to the rated current.
	(Note 2, 3)
		Appropriate for applications where the load will not vary by a large amount.
	Energy-saving	Tunes the output voltage online to minimize the inverter output power during
4		constant-speed operation.	Output voltage
	mode (Note 4)
		Appropriate for energy-saving applications such as fan and pump operation.
				4
	Optimum excitation	Optimizes the exciting current as an energy-saving technique to maximize
9	control mode	the motor efficiency. Appropriate for further energy-saving applications such	Output voltage
	(Note 4)	as machines which are large in J and long in acceleration/deceleration time.

Note: 1. When more accurate control is required for your application, set the other parameters as appropriate.

2.Because of the learning system, this control is not valid at the first time in the optimum acceleration/deceleration mode (operation starts from the second cycle). Also, this mode is only valid for frequency setting of 30.01Hz or more.

3.If an overvoltage (OV3) trip has occurred during operation in the optimum acceleration/deceleration mode (setting "3"), re-set Pr. 8 "deceleration time" to a larger value and restart operation in this mode.

4.When "4" (energy-saving mode) or "9" (optimum excitation control mode) has been set to decelerate the motor to a stop, the deceleration time may be longer than the preset value. Also, overvoltage is more likely to occur in this mode when compared to the constant-torque load characteristics, therefore set the deceleration time to a longer value.

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