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Frequently Asked Questions about the Tachometer

Question number FAQ-0926

Example of Setting for TM-3100 Series Tachometer - 1: "Setting Procedure for Rotation Measurement Using MP-981 Rotation Detector"

<Caution regarding operational instructions>

The menu items in setting mode are "INPUT → MEASURE → FUNCTION → DISPLAY → OUTPUT → OTHER." The settings for each menu item are shown in a flowchart, with selections indicated by a □ red frame and setting values noted as subscripts. For items without a □ red frame, press the [SET/NEXT] button to pass. Please perform button operations following the arrows in the flow. The explanation of button operations is omitted, as you can refer to the section <Basic Button Operations> below.

Measurement Conditions

detectorMP-981
detection gear120 P/R
Decimal point and display unit○○○○ r/min
BCD outputContinuous update output
Analog Output0 ～ 10V / 0 ～ arbitrary r/min
comparatorArbitrary settings

<Example of the rear panel for the TM-3100 series>

Wiring Method

Please be careful >

To ensure EMC compliance, please download the 'TM3100 Installation Manual' and be sure to follow the instructions for housing in a metal panel, using line filters and surge protectors for power wiring, and handling signal shielded cables.

EMC Compliance Configuration and Wiring Diagram

Basic Button Operations

  • Press the 'MENU' button to enter the settings mode.

  • Pressing the 'MENU' button briefly will return to the previous item.

  • By long-pressing the 'MENU' button, you can switch to measurement mode (display of measurement values) from any position.

Settings

  • INPUT (Input Settings)
    In [INPUT], settings related to the acquisition of input signals are configured. Here, we will assume the following settings.

    INPUT TYPEDC
    LOW PASS FILTEROFF

  • After finishing the settings, press the [SET/NEXT] button.

  • MEASURE (Setting of Measurement Function)
    In [MEASURE], you will set the measurement method, measurement items, and their conditions. Here, we will assume that the number of teeth on the detection gear is set to 120, as follows.

    MEASURE MODENORMAL
    MAIN OBJECTROTATION
    ROTATION UNITr/min
    PULSE120 (number of teeth of the detection gear)
    FACTOR1.00000 × 10E+0

  • FUNCTION (Display method and measurement start/stop)
    In [FUNCTION], you will configure the display method and measurement start/stop settings. Here, we will assume the following settings.

    AUTO ZERO TIMEOFF
    MOVING AVERAGEOFF

  • DISPLAY (Display Screen Settings)
    In [DISPLAY], settings related to the number of display digits and display updates are configured. Here, we will set it as follows.

    DISPLAY1 LINE
    D.P. POSITIONOFF
    DIGIT FIXED TO 0OFF
    DISPLAY UPDATE1.0s
    BRIGHTNESSMID

  • OUTPUT (Settings for BCD, COMP, and ANALOG outputs)
    In [OUTPUT], settings related to BCD output, comparator output, and analog output are configured. Here, we will assume the following settings.

    BCD OUTPUTMAIN (display value)
    BCD MODECONTINUE (Continuous Update)
    COMP MODEUPPER LOWER
    (Optional settings for each COMP1, 2, 3
    UPPER: Measured value ≧ Set value
    LOWER: Measured value < Set value)
    COMP UPPER （LOWER）Set arbitrary judgment values for COMP1, COMP2, and COMP3.
    ANALOG OUTPUT MODEVOLTAGE
    ANALOG VOLTAGE RANGE0 ～ 10V
    ANALOG ZERO000000
    ANALOG FULLSet the desired display value to 10V.
    ANALOG UPDATE10ms
    (If the signal is slow due to periodic operation, the voltage change will be delayed)

  • OTHER (Panel Condition Save)
    In [OTHER], settings for saving/loading conditions, RS-232C, and options list are configured. The setting values are saved in backup memory, but for safety, they will be saved in COND1.

    About saving settings.
    • Backup Memory
      The menu settings are saved in the backup memory. When the power is ON, the settings from the backup memory are automatically read.
    • CLEAR
       Restores the contents of the backup memory to the default settings (factory settings).
    • CONDITION
      The settings of the backup memory can be stored (SAVE) to COND1.
      You can read from the backup memory with the LOAD operation.

  • Return to measurement
    Press and hold the [MENU] button. You will return to the measurement screen and start measuring.

Last updated date: 2009-07-21