Mitsumi electronic FR-F520-0.75K, 55K Speed display Pr , Pr, 144 4, 6, 8, 10 104, 106, 108

PARAMETERS

4.2.17 Speed display (Pr. 37, Pr. 144)

Pr. 37 "speed display"

Pr. 144 "speed setting switch-over"

Related parameters

Pr. 52 "DU/PU main display data selection"

Pr. 53 "PU level display data selection"

The units of the running speed monitor display of the PU (FR-DU04/FR-PU04), the running speed setting in the PU operation mode, and the parameter setting used for frequency setting can be changed from the frequency to the motor speed or machine speed.

Parameter	Factory	Setting Range	Remarks
Number	Setting
37	0	0, 1 to 9998	0: Frequency setting added
144	4	0, 2, 4, 6, 8, 10, 102,
		104, 106, 108, 110

<Setting>

•To display the machine speed, set in Pr. 37 the machine speed for 60Hz operation.

•To display the motor speed, set the number of motor poles (2, 4, 6, 8, 10) or the number of motor poles plus 100 (102, 104, 106, 108, 110) in Pr. 144.

•When values have been set in both Pr. 37 and Pr. 144, priority is as follows:

Pr. 144 = 102 to 110 > Pr. 37 = 1 to 9998 > Pr. 144 = 2 to 10

Hence, the half-tone screened settings in the following list become valid.

•When the running speed monitoring has been selected, the parameter setting unit and the running speed setting unit in the PU operation mode depend on the combination of the Pr. 37 and Pr. 144 settings as indicated below:

Running Speed	Parameter Setting Unit	Pr. 37 Setting	Pr. 144 Setting
Monitor Display	Running Speed Setting Unit
Speed of 4-pole motor (r/min)		0	0
	Hz	0	2 to 10
Motor speed (r/min)		1 to 9998	102 to 110
	r/min	0	102 to 110
Machine speed	Hz	1 to 9998	0
	r/min	1 to 9998	2 to 10

Note: 1. In the V/F control mode, the motor speed is converted from the output frequency and does not match the actual speed.

2.When the running speed display has been selected with "0" set in Pr. 37 and "0" in Pr. 144, the monitor display shows the speed reference for a 4-pole motor (1800r/min is displayed at 60Hz).

3.To change the PU main monitor (PU main display) or PU level meter (PU level display), refer to Pr. 52 and Pr. 53.

4.As the operation panel display is 4 digits, "----" is displayed when the monitored value exceeds "9999".

CAUTION

Make sure that the running speed and number of poles set are correct. Otherwise, the motor might run at extremely high speed, damaging the machine.

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