Monitor Display And Monitor Output Signal; Speed Display And Speed Setting (Pr. 37, Pr. 144, Pr. 505, Pr. 811) - Mitsubishi Electric FR-A720-0.4K Instruction Manual

Monitor display and monitor output signal

4.16 Monitor display and monitor output signal

Purpose
Display motor speed
Set speed
Change PU monitor display data
Change of the monitor output
from terminal FM and AM
Set the reference of the monitor
output from terminal FM and AM
Adjust terminal FM, AM outputs

4.16.1 Speed display and speed setting (Pr. 37, Pr. 144, Pr. 505, Pr. 811)

You can change the PU (FR-DU07/FR-PU04/FR-PU07) monitor display or frequency setting to motor speed or machine speed.
Pr.36
page 154
Parameter
Pr.41
Number
page 235
Pr.143 37 Speed display
page 171
Pr.145
144 Speed setting switchover
page 372
505 Speed setting reference
811 Set resolution switchover
⋅ To display the machine speed, set in Pr. 37 the machine speed for operation with frequency set in Pr. 505.
For example, when Pr. 505 = "60Hz" and Pr. 37 = "1000", "1000" is displayed on the running speed monitor when the
running frequency is 60Hz. When running frequency is 30Hz, "500" is displayed.
⋅ When displaying the motor speed, set the number of motor poles (2, 4, 6, 8, 10) or number of motor poles + 100
(102, 104, 106, 108, 110) in Pr. 144.
⋅ When "1, or 11" is set in Pr. 811, the setting increments of speed setting from the PU, speed setting from RS-485
communication or communication options (other than FR-A7ND, FR-A7NL) and running speed monitor is 0.1r/min.
⋅ When both Pr. 37 and Pr. 144 have been set, their priorities are as given below.
Pr. 144, 102 to 110 > Pr. 37, 1 to 9998 > Pr. 144, 2 to 10
⋅ When the running speed monitor is selected, each monitor and setting are determined by the combination of Pr. 37
and Pr. 144 as listed below. (The units within the thick frame are the initial values.)
Pr. 37 Pr. 144
Setting Setting
0
(initial 2 to 10
value)
102 to 110
1 to 9998 2 to 10
102 to 110
Motor speed r/min conversion formula............ frequency × 120/number of motor poles (Pr. 144)
*1
Machine speed conversion formula ...................Pr. 37 × frequency/Pr. 505
For Pr. 144 in the above formula, the value is "Pr. 144-100" when "102 to 110" is set in Pr. 144 and the value is "4" when Pr. 37 = 0 and Pr. 144 = 0.
*2 The increments for Hz are 0.01Hz, machine speed are 1m/min, and r/min are 1r/min.
*3 Pr. 505 is always set as frequency (Hz).
240
Speed display and speed
setting
DU/PU main display data
selection
Cumulative monitor clear
Terminal FM, AM function
selection
Setting of reference of
terminal FM and AM
Terminal FM, AM
calibration
Initial
Name
Value
0
4
60Hz
0
Output Frequency
Monitor
0 Hz
Hz
r/min
*1
0 Hz
Machine speed
*1
Hz
Parameter that must be Set
Pr. 37, Pr. 144, Pr. 505, Pr. 811
Pr. 52, Pr. 170, Pr. 171, Pr. 268, Pr. 891
Pr. 54, Pr. 158, Pr. 291, Pr. 866, Pr. 867
Pr. 55, Pr. 56, Pr. 291, Pr. 866, Pr. 867
Setting
Range
0 Frequency display, setting
1 to 9998 Set the machine speed at Pr.505.
0, 2, 4, 6, 8,
10, 102, 104, Set the number of motor poles when displaying the motor speed.
106, 108, 110
1 to 120Hz Set the reference speed for Pr. 37.
Speed setting and running
speed monitor increments from
the PU, RS-485 communication
or communication option.
0 1r/min
1 0.1r.min
10 1r/min
11 0.1r.min
Set Frequency
Monitor
Hz
Hz
r/min
*1
Hz
Machine speed
*1
Hz
Pr. 900, Pr. 901
Description
Torque limit setting increments
Pr.22, Pr.812 to Pr.817
0.1%
0.01%
Running Speed Frequency Setting
Monitor Parameter Setting
r/min
*1
r/min
*1
r/min
*1
Machine speed
*1
Machine speed Machine speed
*1
r/min
*1
Refer to Page
240
242
242
247
250
Hz
Hz
r/min
*1
Hz
*1
Hz