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Minebea CSA-521 Instruction Manual

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Transmitter
CSA-521
Instruction Manual
EN294-1145-G

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Summary of Contents for Minebea CSA-521

  • Page 1 Transmitter CSA-521 Instruction Manual EN294-1145-G...
  • Page 3 FOREWORD Thank you very much for your purchasing our Transmitter CSA−521. This manual explains installation procedures and connecting method and also operating method for the Transmitter CSA−521. Make use of it properly after reading through the manual carefully. Be sure to deliver the manual to the end user. Moreover, the end user should keep the manual at hand after reading it over.
  • Page 4 Marks and arrangements used in this manual The following marks are attached to the explanation on the matters that indicate “Don’t do this.”, “Take care.” and “For reference”. Be sure to read these items where these marks are attached.  Warning ●...

  • Page 5: For Safe Operation

    For safe operation Be sure to read this instruction manual before use. 1. Installation place  ● Use the instrument where the temperature/humidity specifies with the range as follows： Environmental temperature ：−10 ℃ to 50 ℃ ：Less than 85 %R.H. (Non condensing) Environmental humidity (1) Location where installation is not allowed.
  • Page 6 (2) Installation  ● When installing the instrument, install as referring to the following figures and secure the space around the instrument. Each dimensions of the instrument and required dimensions for the environmental spaces are as follows: Outline dimensions Height of board Max.

  • Page 7: Power Supply

    2. Power supply  Warning ● Be sure to check that the power supply is off in connecting each cable. If the work is done while the power is on, there may have the case that electric shock to the operator or even may have damage to the instrument.

  • Page 8: History Of Revision

    Feb. 2010 DRW.No.EN294-1145-C Front cover’s logo is changed. Due to ECN No.FN10−02140 − Change − Oct. 2010 DRW.No.EN294-1145-D Minebea logo is changed. Due to ECN No.FN10−02140−D − Change − Jun. 2012 DRW.No.EN294-1145-E Minebea logo is changed. Due to ECN No.FN13−02032 −...

  • Page 9: Table Of Contents

    INDEX Ⅰ Forwards ..............Ⅱ...

  • Page 11: General

    1. General This instrument is a transmitter for the application of strain gage applied transducer. It can obtain the analog output corresponding to the load, pressure, and the torque, etc., by amplifying the output of various strain gage applied transducers. 2.

  • Page 12: Connecting Method

    3. Connecting method 3−1. Layout of the terminal boards There is the terminal boards, which has 10 points of terminals. Layout of terminal boards are shown in the following figure.： ● Terminals(CN1) Name of Description Applications terminals Bridge power supply(＋) Amplifier input(−) Bridge power supply(−) Strain gage applied transducer...

  • Page 13: 3−3. Connection

    3−3. Connection  ※1 When tension is applied with the application of tension type or universal (compression /tension) type of load cell, and display of “+” direction is required, connect “Green” with Terminal No.4 and “Blue” with Terminal No.2 individually. As there is a case which standard wiring color is different, please confirm the inspection data sheet of the load cell being used.
  • Page 14 Connection with 1 piece of load cell and a junction box for extension use(B−304) and CSD−521 Junction box B−304 CAB−502 ※2 (The length of CAB−502 is within 30 m totally.) Internal wiring diagram of B−304 to load cell GRN YEL(Shield) Suitable crimp type terminal lugs ：1.25−4 or 2−4 YEL(Shield)

  • Page 15: 3−3−2. Connection Of Voltage Output

    3−3−2. Connection of voltage output Connections with voltage output should be made as the following figure. Shield ＋ −  Warning ● Connections with voltage outputs should be made securely according to the figures and also within specified load resistance. If neglected, it may cause an unexpected failure and/or malfunction to the instrument.

  • Page 16: 3−3−3. Connection With The Power Supply And The Earth

    3−3−3. Connection with the power supply and the earth Connections with the power supply and the earth should be made as the following figure. Grounding should be the D class with single earth. Power supply voltage DC24 V (DC18 V to DC36 V) Power consumption Within approx.100 mA D class with single earth...

  • Page 17: Calibration Procedures

    4. Calibration procedures  Warning ● Before using the new instrument or after exchanging the strain gage applied transducer with a new one, be sure to make calibration. If calibration is not made, correct measured results may not be obtained, or it may cause malfunction to the instrument and it may damage the peripheral equipment.

  • Page 18: 4−2−2. Electronic Calibration By Calib Input

    4−2−2. Electronic calibration by CALIB input Procedures ZERO trimmer SPAN trimmer Set the load cell in the condition of the initial load (tare weight). When the initial load (tare weight) is exceeding ±0.25 mV/V at the input conversion, cancel the initial load (tare weight) referring to the paragraph 4−3.
  • Page 19 Procedures SPAN adjustment Turn on the “CALIB” switch. Be able to get the output equivalent to the calibration value at 0.5 mV/V±0.001 mV/V  “CALIB” switch is turned on by sliding up. The voltage output value corresponding to the CALIB value is calculated from the rated load value, the rated output value, the maximum load value, and the voltage output value of the connected load cell at that time.

  • Page 20: 4−3. Zero Adjustment By Mounting Resistance

    4−3. Zero adjustment by mounting resistance 4−3−1. Mounting the resistance The zero point adjustable range of this transmitter is 0.25 mV/V(±500 μst) or equivalent at the input conversion. Therefore, when an initial load exceeds this range, it is not possible to adjust it by this unit.

  • Page 21: 4−3−2. Check The Initial Load

    Resistance by which the zero adjustment of ±0.25 mV/V(±500 μst) or more is set can be requested by the undermentioned formula. Rz＝Resistance for compensation(kΩ) ×10 Rz＝ ＝Tare weight(Initial load)(mV/V) ×K K＝146 The table below shows resistance for compensation corresponding to the input conversion strain. Resistance value(Rz) When the bridge resistance is 350 Ω...
  • Page 22 Calculation example) Calculation example when power supply voltage of the bridge is 10.000 V and input voltage is 2.0 mV in the condition of the initial load(tare weight), is as follows: Power supply voltage of the bridge 10.000 V Input voltage 2.0 mV 2.0 mV (Initial load input conversion value) ＝...

  • Page 23: Trouble Shooting

    5. Trouble shooting When abnormal point(s) is/are found during the operation of the instrument, check by the following procedures. However, when you can’t find applicable item nor solve the symptom of trouble even after you have taken some measures, contact us. Supply power, again.

  • Page 24: 5−1. Execute Trouble Shooting

    5−1. Execute trouble shooting Execute trouble shooting. Does supply power voltage satisfy the specifications? Supply power source suitable for the specifications. Voltage output doesn’t operate. Set load Load resistance is resistance 2 kΩ or more. over 2 kΩ Inform us about the contents of failure and situation at site in details.
  • Page 25 Output the voltage Voltage output doesn’t vary. Voltage output fluctuates abnormally. Zero adjustment of Proceed zero adjustment voltage output cannot referring to the paragraph 4−3 be made Inform us about the contents of failure and situation at site in details.
  • Page 26 POWER LED is light on Connecting method is good Connect securely according to the paragraph 3−1 Inform us about the contents of failure and situation at site in details.
  • Page 27 Remove the connecting cable for strain gage applied transducer from the terminal board.  Set the connecting range to DC･V for the measuring instrument such as tester and so on. Inform us about the contents of The voltage between A−C is DC10 V failure and situation at site in details.
  • Page 28 Remove the connecting cable for strain gage applied transducer from terminal board.  Set the connecting range to DC･V range for the measuring instrument such as tester and so on. Inform us about the contents of The voltage between A−C failure and situation at site in details.

  • Page 29: Specifications

    6. Specifications 6−1. Specifications ･ Bridge power supply DC10 V±0.3 V ･ Applicable transducers 1 pieces of strain gage applied transducer(350 Ω) is connectable. ･ Input range 0.5 mV/V to 1.5 mV/V ･ Sensitivity 10 V output at the input of 0.5 mV/V ･...

  • Page 30: Warranty

    7. Warranty 7−1. Warranty D The instrument is covered by a warranty for a period of one year from the date of delivery. D As for repairs and/or after service is required during the period of warranty, contact our sales office or sales agent from which you have purchased. 7−2.
  • Page 32 1-1-1, Katase, Fujisawa-shi, Kanagawa-ken, 251-8531 Japan Tel: +81-466-23-2681 Fax: +81-466-22-7191 Sensing Device Business Unit FUJISAWA PLANT 1-1-1, Katase, Fujisawa-shi, Kanagawa-ken, 251-8531 Japan Tel: +81-466-22-7151 Fax: +81-466-22-1701 KARUIZAWA PLANT 4106-73 Miyota, Miyota-machi, Kitasaku gun, Nagano-ken 389-0293 Japan Tel: +81-267-31-1309 Fax: +81-267-31-1353 HOMEPAGE ADDRESS http://www.minebea-mcd.com...

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