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AI-Tek Instruments TACHTROL20 T77250-10 Manual

Rate meter
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152 Knotter Dr.
Cheshire CT 06410 USA
PH: 203-271-6000 Fax: 203-271-6200
www.aiteksensors.com
20
TACHTROL
RATE METER
GENERAL DESCRIPTION
20
The TACHTROL
accommodate virtually any rate measuring application. The meter has the ability to scale for direct
readout in terms of the units being measured. Whether a machine produces bottles, cloth, wire, or
beverage mix, operation is enhanced when the rate readout is expressed directly in bottles/min.,
feet/min., gallons/min., or whatever units are needed in plant applications.
20
The TACHTROL
can accommodate magnetic pickups, logic sensors, and NPN open collector sensors.
The pulses are received and scaled, so the desired display can be achieved. The meter is programmed
through both the front panel buttons and DIP switches. Once the programming is complete, the front
panel buttons can be disabled by a DIP switch setting.
The meter has been specifically designed for harsh industrial environments. With a NEMA 4X/IP65 sealed
bezel and extensive testing to meet CE requirements, the meter provides a tough, yet reliable application
solution.

SAFETY SUMMARY

All safety related regulations, local codes and instructions that appear in the literature or on equipment
must be observed to ensure personal safety and to prevent damage to either the instrument or equipment
connected to it. If equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.
CAUTION: Risk of Danger
Read complete instructions prior to
installation and operation of the unit.
TM5-250_B
LP0859X 10/10
• RATE INDICATION
• 6-DIGIT 0.56" (14.2 mm) HIGH RED LED DISPLAYS
• INPUT RATES UP TO 25KHz
• ACCEPTS A WIDE VARIETY OF SENSORS
• PROGRAMMABLE SCALING
• PROGRAMMABLE UPDATE TIME
• PROGRAMMABLE DECIMAL POINTS
• NEMA 4X / IP65 SEALED FRONT BEZEL
Rate Meter, Model T77250-10, provides the versatility and flexibility needed to
MODEL T77250-10
CAUTION:
Risk of Electric shock
1

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Summary of Contents for AI-Tek Instruments TACHTROL20 T77250-10

  • Page 1: Safety Summary

    152 Knotter Dr. Cheshire CT 06410 USA PH: 203-271-6000 Fax: 203-271-6200 www.aiteksensors.com TACHTROL RATE METER MODEL T77250-10 • RATE INDICATION • 6-DIGIT 0.56" (14.2 mm) HIGH RED LED DISPLAYS • INPUT RATES UP TO 25KHz • ACCEPTS A WIDE VARIETY OF SENSORS •...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Safety Summary…………………………………………………………..1 General Meter Specifications………………………..……………..2 Installing the Meter……………………………………………………….5 Setting the Switches……………….…………………………….….….6 Wiring the Meter…………………………………………………….……..7 Reviewing the Front Buttons and Display…………………...9 Scaling the Meter ………………………………………………….……..9 Programming the Meter………………………………….……….….11 GENERAL METER SPECIFICATIONS 1. DISPLAY: 6-digit, 0.56" (14.2 mm), 7-segment red LED. Decimal points are programmed by front panel keys.
  • Page 3 8. ENVIRONMENTAL CONDITIONS: Operating Temperature: 0° to 60°C Storage Temperature: -40° to 60°C Operating and Storage Humidity: 0 to 85% max. relative humidity (non- condensing) Vibration According to IEC 68-2-6: Operational 5 to 150 Hz, in X, Y, Z direction for 1.5 hours, Shock According to IEC 68-2-27: Operational 30 g, 11 msec in 3 directions.
  • Page 4 10. CONNECTIONS: High compression cage-clamp terminal block. Wire Gage Capacity: 30-14 AWG copper wire. Wire Strip Length: 0.3" (7.5 mm). Clamp screw Torque: 4.5 inch-lbs (0.51 N-m) max 11. CONSTRUCTION: This unit is rated for NEMA 4X/IP65 outdoor use. IP20 Touch safe. Installation Category II, Pollution Degree 2.

  • Page 5: Installing The Meter

    INSTALLING THE METER INSTALLATION The TACHTROL meets NEMA 4X/IP65 requirements when properly installed. The unit is intended to be mounted into an enclosed panel. Prepare the panel cutout to the dimensions shown below. Remove the panel latch from the unit. Slide the panel gasket over the rear of the unit to the back of the bezel. The unit should be installed fully assembled.

  • Page 6: Setting The Switches

    SETTING THE SWITCHES The meter has DIP switches that must be checked and/or changed prior to applying power. To access the power switch, remove the meter base from the case by firmly squeezing and pulling back on the side rear finger tabs. This should lower the latch below the case slot (which is located just in front of the finger tabs).

  • Page 7: Wiring The Meter

    WIRING THE METER WIRING OVERVIEW Electrical connections are made via screw-clamp terminals located on the back of the meter. All conductors should conform to the meter's voltage and current ratings. All cabling should conform to appropriate standards of good installation, local codes and regulations. It is recommended that the power supplied to the meter (DC or AC) be protected by a fuse or circuit breaker.
  • Page 8 POWER WIRING AC power connections: DC power connections Terminal 1: AC (L1) Terminal 3: DC OUT/IN (DC+) Terminal 2: AC (L2) Terminal 4: COMM (DC-) INPUT WIRING Magnetic Pickup AC Inputs From Tach Two Wire Proximity, Current Generators, Etc. Source Current Sinking Output Current Sourcing Output Interfacing With TTL...

  • Page 9: Reviewing The Front Buttons And Display

    REVIEWING THE FRONT BUTTONS & DISPLAY DISPLAY MODE OPERATION PROGRAMMING MODE OPERATION Access Programming Mode Store selected parameter & index to next parameter No Function Increment selected digit of parameter value ▲ No Function Select digit position in parameter value ▼...
  • Page 10 RATE DISPLAY OVERFLOW The rate of the input signal along with the programmed scaling values can cause the calculated rate display to exceed the meter's 6-digit capacity. If this occurs, the display will show "OLOLOL" to indicate an overflow condition. INPUT FREQUENCY CALCULATION The meter determines the input frequency by summing the number of falling edges received during a sample period of time.

  • Page 11: Programming The Meter

    PROGRAMMING THE METER PROGRAMMING SEQUENCE The TACHTROL has five programmable parameters which are entered in the sequence shown above, using the front panel push buttons. Before programming, refer to the section on Scaling the Meter to determine the Rate Scaling Display Value and Rate Scaling Input Value to use for the specific application.
  • Page 12 The High Update Time is the maximum amount of time before the display is forced to zero. The High Update Time must be higher than the Low Update Time and also higher than the desired slowest readable speed (one divided by pulses per second). The factory setting of 2.0 will force the display to zero for speeds below 0.5 Hz or one pulse every 2 seconds.
  • Page 13 Company's option. The Company disclaims all liability for any affirmation, promise or representation with respect to the products. The customer agrees to hold AI-Tek Instruments, LLC harmless from, defend, and indemnify AI-Tek against damages, claims, and expenses arising out of subsequent sales of AI-Tek products or products containing components manufactured by AI-Tek and based upon personal injuries, deaths, property damage, lost profits, and other matters which Buyer, its employees, or sub-contractors are or may be to any extent liable, including without limitation penalties imposed by the Consumer Product Safety Act (P.L.