Monitor Display And Monitor Output Signal; Speed Display And Speed Setting (Pr. 37) - Mitsubishi Electric FR-E720-0.1K(SC) Instruction Manual

Fr-e700 series

Table of Contents

4.12 Monitor display and monitor output signal

Purpose

Display motor speed

Set speed

Change PU monitor display data

Change the monitor output from

terminal FM

Set the reference of the monitor

output from terminal FM

Adjust terminal FM outputs

4.12.1 Speed display and speed setting (Pr. 37)

The monitor display and frequency setting of the PU (FR-PU04/FR-PU07) can be changed to the machine speed.

Parameter

Name

Number

Speed display

The above parameters can be set when Pr. 160User group read selection = "0". (Refer to page 188)

∗ The maximum value of the setting range differs according to the Pr. 1 Maximum frequency (Pr.18 High speed maximum frequency) and it can be calculated from the

following formula.

Maximum setting value of Pr. 37

Note that the maximum setting value of Pr. 37 is 9998 if the result of the above formula exceeds 9998.

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

For example, when Pr. 37 = "1000", "1000" is displayed on the output frequency and set frequency monitor when the

running frequency is 60Hz. When running frequency is 30Hz, "500" is displayed.

Output Frequency

Pr. 37 Setting

0 (initial value)

0.01 to 9998

Machine speed

∗1

Machine speed conversion formula ......... Pr. 37 × frequency/60Hz

∗2

Hz is displayed in 0.01Hz increments and machine speed is in 0.001.

NOTE

Under V/F control, the output frequency of the inverter is displayed in terms of synchronous speed, and therefore,

displayed value = actual speed + motor slip. The display changes to the actual speed (estimated value calculated based

on the motor slip) when Advanced magnetic flux vector control was selected or slip compensation was valid.

Refer to Pr. 52 when you want to change the PU main monitor (PU main display).

Since the panel display of the operation panel is 4 digits in length, the monitor value of more than "9999" is displayed "----".

When the machine speed is displayed on the FR-PU04/FR-PU07, do not change the speed by using an up/down key in

the state where the set speed exceeding 65535 is displayed. The set speed may become arbitrary value.

While the machine speed is displayed on the monitor, values of other parameters related to speed (Pr. 1 , etc.) are in

frequency increments. Set other parameters (Pr. 1, etc) related to speed in increments of frequency.

Due to the limitations on the resolution of the set frequency, the indication in the second decimal place may differ

from the setting.

When frequency or set frequency is monitored from network option card except for FR-A7NC E kit, frequency is

displayed for monitor description regardless of Pr. 37 setting.

Make sure that the running speed setting is correct.

Otherwise, the motor might run at extremely high speed, damaging the machine.

Parameters referred to

Pr. 1 Maximum frequency, Pr.18 High speed maximum frequency

Pr. 52 DU/PU main display data selection

Pr. 800 Control method selection

Speed display and speed setting

DU/PU main display data selection

Cumulative monitor clear

Terminal FM function selection

Terminal FM standard setting

Terminal FM calibration

Initial

Setting Range

Value

0.01 to 9998∗

16777.215 × 60 (Hz)

Setting value of Pr. 1 (Pr.18) (Hz)

Set Frequency

Monitor

Machine speed

∗1

CAUTION

Refer to page 154

Refer to page 84