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PARAMETERS
82
4.2.17 Speed display (Pr. 37, Pr. 144)
Pr. 37 "speed display"
Pr. 144 "speed setting switch-over"
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
Number
Factory
Setting
Setting Range Remarks
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
Monitor Display
Parameter Setting Unit
Running Speed Setting Unit
Pr. 37 Setting Pr. 144 Setting
Speed of 4-pole motor (r/min) 0 0
0 2 to 10Hz
1 to 9998
102 to 110Motor speed (r/min)
r/min 0
102 to 110
Hz 1 to 9998 0
Machine speed
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.
Pr. 52 "DU/PU main display data
selection"
Pr. 53 "PU level display data selection"
Related parameters