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Tachometer Frequently Asked Questions

Question number FAQ-0929

TM-3100 Series Tachometer Setup Example - 3: "Setting Procedure for Line Speed Measurement Using RP-7400-120P/R Roller Encoder"

<Notes on operation instructions>

The menu items in settings mode are "INPUT → MEASURE → FUNCTION → DISPLAY → OUTPUT → OTHER". The settings for each menu item are shown in the flowchart, with selections indicated by a red square and the setting value indicated by a subscript. For items without a red square, press the [SET/NEXT] button to skip them. Follow the arrows in the flowchart to operate the buttons. Explanations of button operations are omitted here; please refer to the <Basic Button Operations> section below.

■Measurement conditions

detectorRP-7400-120P/R (Output pulse count: 120P/R, Roller diameter: 63.7 mm)
Decimal point and display unit○○.○○ m/min
BCD outputContinuous update output
Analog output0 to 10V/0 to arbitrary m/min
ComparatorOptional settings

<Example of TM-3100 series rear panel>

<Wiring method>

<Please note>

To ensure EMC compliance, download the "TM3100 Installation Manual" instruction manual and be sure to follow the instructions to house the unit in a metal enclosure, install line filters and surge suppressors for power wiring, and process the signal shielding wires accordingly.


EMC compliance configuration and wiring diagram

■Basic button operation

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

  • A short press of the "MENU" button will return you to the previous item.

  • Press and hold the "MENU" button to switch to measurement mode (display of measured values) from any position.

■Settings

  • INPUT (Input settings)
    The [INPUT] section is used to configure settings related to input signal acquisition. Here, we will configure it as follows:

    INPUT TYPEDC
    LOW PASS FILTEROFF

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

  • MEASURE (Settings for measurement functions)
    In [MEASURE], you set the measurement method, measurement items, and their conditions. Here, we will assume that the roller diameter of the RP-721-120P/R is 66.7 mm and the output pulse count is 120 P/R, and set it as follows.

    MEASURE MODENORMAL
    MAIN OBJECTROTATION
    LSPEED UNITm/s
    PULSE120
    DIAMETER63.7mm
    FACTOR1.00000 × 10E + 0

  • FUNCTION (Display method and measurement start/stop)
    In [FUNCTION], you configure the display method and settings related to starting and stopping measurements. Here, we will configure the settings as follows:

    AUTO ZERO TIMEOFF
    MOVING AVERAGEOFF

  • DISPLAY (Display screen settings)
    In [DISPLAY], you can configure settings related to the number of digits displayed and the display update. Here, we will set it as follows:

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

  • OUTPUT (BCD, COMP, ANALOG output settings)
    The [OUTPUT] section allows you to configure settings for BCD output, comparative output, and analog output. Here, we will configure them as follows:

    BCD OUTPUTMAIN (Displayed Value)
    BCD MODECONTINUE (Continuous updates)
    COMP MODEUPPER LOWER
    (Optional settings for each of COMP1, 2, and 3)
    UPPER: Measured value ≥ Set value
    LOWER: (Measured value < Set value)
    COMP UPPER （LOWER）Set the judgment value arbitrarily for each of COMP1, 2, and 3.
    ANALOG OUTPUT MODEVOLTAGE
    ANALOG VOLTAGE RANGE0 ～ 10V
    ANALOG ZERO000000
    ANALOG FULLYou can set the display value to 10V as you like.
    ANALOG UPDATE10ms
    (Due to the periodic nature of the calculation, if the signal is slow, the voltage change will also be slow.)

  • OTHER (Panel condition preservation)
    In [OTHER], you configure settings related to saving/loading configuration conditions, RS-232C, and the option list. The settings are saved in backup memory, but for safety, they are also saved in COND1.

    [Regarding saving settings]
  • Backup memory
    Menu settings are saved in backup memory. When the power is turned on, the settings from backup memory are automatically read.
  • CLEAR
     This will restore the contents of the backup memory to their initial settings (factory default).
  • CONDITION
    The backup memory settings can be saved to COND1.
    You can load the data into backup memory using the LOAD operation.

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

Last updated: 2019-09-03