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Instruction Manual for MODEL A7X18-X(Temperature Measurement)
Operation Manual for the A7000 Series
Temperature Measurement: A7X18-X
CAUTIONS
(1) Application of voltage or current exceeding the maximum allowable value to the
input section may damage the instrument.
(2) Use the supply voltage in the allowable range. Using it out of this range may
result in fire, electric shock, or an instrument failure.
(3) Please note that the information contained in this manual is subject to change
due to product improvements without notice.
(4) Every effort has been made to ensure accuracy in the presentation of this
manual. However, should you have any questions or should any errors or
omissions come to your attention, please contact your sales representative or our
sales office directly.
(5) After reading, keep this manual nearby so that you can refer to it as needed.
1. Check before Use
Thank you for purchasing our A7000 series. The operator who
uses the instrument should keep this manual on hand. When you
receive the product, make sure that you have all the parts and that
none have been damaged during transportation. If any part is
damaged or missing, contact your sales representative or our sales
office directly.
1.1. Type Configuration
The type configuration of the A7000 series is as shown below.
Check that there is no difference in the type or specifications
between the product you ordered and the product you have
received.
A7
Power
1:AC power(100 to 240V AC,50/60Hz)
2:DC power(12 to 48V DC)
Input
1:DC voltage measurement(±100mV,±1V,±10V,±100V,or
±700V measurement
2:DC small current measurement(±100μA,±1mA,±10mA,
or±100mA measurement
3:DC large current measurement(±1A or ±2Ameasurement)
4:AC voltage measurement(100mV,1V,10V,100V,
or 700V measurement)
5:AC small current measurement(100μA,1mA,10mA,or 100mA
measurement)
6:AC large current measurement(1A or 5Ameasurement)
7:Resistance measurement
8:Temperature measurement(TC,RTD)
9:Frequency measurement
A:Load cell input
B:Process signal measurement(1 to 5V,±5V ,4 to 20mA,or
±20mA measurement)
Output
0:None
1:Relay contact output
2:Photocoupler output
3:BCD output (TTL)
4:BCD output (Open collector)
5:BCD output (TTL)
+ Photpcoupler output
6:BCD output (Open collector) + Photpcoupler output
7:Analog output
8:Analog output + Photocoupler output
9:RS-232C
A:RS-485
B:RS-232C + Photocoupler output
C:RS-485 + Photocoupler output
WATANABE ELECTRIC INDUSTRY CO.,LTD.
2. Mounting Method
2.1. Panel Cutout Dimensions
For panel cutout made when mounting the A7000 series
measuring unit, follow the figure below.
+0.7
68
-0
96 mm or more
2.2. Panel Mounting Method
To mount the A7000 series measuring unit onto a panel, remove
the mounting band from the main unit, fit the unit into the panel from
the front of the panel, and fix it using the mounting band removed
from the rear of the panel. If you wish to increase the strength of the
mounting, attach fixing supports with screws as shown in the figure
below. For fixing supports and screws, contact your sales
representative or our sales office.
Mounting band
CAUTIONS
(1) Mount the instrument securely on a surface that will be able to bear its weight.
Insufficient strength for mounting or incorrect mounting may result in the instrument
falling and injuring personnel.
(2) The A7000 series has no power switch. Connecting power to the instrument
makes the product immediately operable.
(3) If the instrument is installed inside equipment to heat radiation, etc., and ensure
that the in-equipment temperature does not rise above 50°C.
3. Description of Terminals and Connection
Output section (different configuration for BCD
output)
Input section
3.1. Connecting Power
Recommended
Torque:0.5Nm
100 to 240V AC(50/60Hz)
12 to 48V DC
+
Name
Terminal No.
1
Power
Power connection terminal. 0V for DC driving
Power connection terminal. +V for DC driving
2
Power
1/12
Lugs
Plastic screw
Fixing support
M3×20
Power section
Applicable crimp terminal
5.8 or less
5.8 or less
Description
UW-33809m
2020.12

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Summary of Contents for WATANABE ELECTRIC INDUSTRY A7X18-X

  • Page 1 Instruction Manual for MODEL A7X18-X(Temperature Measurement) 1/12 2. Mounting Method 2.1. Panel Cutout Dimensions Operation Manual for the A7000 Series For panel cutout made when mounting the A7000 series Temperature Measurement: A7X18-X measuring unit, follow the figure below. +0.7 96 mm or more !...
  • Page 2 Instruction Manual for MODEL A7X18-X(Temperature Measurement) 2/12 3.2. Connecting Input Signal Photocoupler Output Unit 3.3.2. Applicable crimp terminal Adaptable wire: AWG24 to AWG16 5.8 or less 5.8 or less Recommended torque : 0.18Nm 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ①...
  • Page 3 Instruction Manual for MODEL A7X18-X(Temperature Measurement) 3/12 Analog Output Unit RS-485 Unit 3.3.4. 3.3.6. Adaptable wire: AWG24 to AWG16 Adaptable wire: AWG24 to AWG16 Recommended torque : 0.18Nm Recommended torque : 0.18Nm 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Term.
  • Page 4: Part Names And Their Functions

    Instruction Manual for MODEL A7X18-X(Temperature Measurement) 4/12 4. Part Names and their Functions ① ② ③ Loca- Name Main Functions tion ① Judgment Monitor Indicates judgment results when the unit is used as a meter relay. RE HH PH Main Monitor HI...
  • Page 5 Instruction Manual for MODEL A7X18-X(Temperature Measurement) 5/12 Scaling Data 5.1.2. Initial Menu Display Parameter Name Settable Range or Alternatives Main Setting Target and Precautions P.L. Value Input range (RANG) Selects the input range. *Note that the input terminal changes depending on the input range.
  • Page 6 Instruction Manual for MODEL A7X18-X(Temperature Measurement) 6/12 5.4. Shifting to the Parameter Setting Mode 5.6. Scaling Data Setting Procedure This section describes the concept of analog output scaling and an Measurement operation example of setting a full-scale indicated value or analog output HI as a...
  • Page 7 Instruction Manual for MODEL A7X18-X(Temperature Measurement) 7/12 5.7. Comparator Data Setting Procedure Measurement operation The A7000 can comparison a vertical judgment or a tolerance judgment with the comparison output type of a comparator data setup. Pressing for a prolonged time High and Low Judgment Type 5.7.1.
  • Page 8 Instruction Manual for MODEL A7X18-X(Temperature Measurement) 8/12 Tolerance Judgment Type 5.8. Shift Data Setting Procedure 5.7.2. The tolerance judgment type allows you to set a nominal value and its The shift function allows you to arbitrarily shift the display without tolerances (±XX%) to make judgment on the basis of the judgment...
  • Page 9: External Control Function

    Instruction Manual for MODEL A7X18-X(Temperature Measurement) 9/12 6. External Control Function 7. Output Function 6.1. Each External Control Terminal 7.1. Comparison Output Function The A7000 series allows four judgment values of HH, HI, LO, and Internal circuit: pull-up at approx. 5 V (resistance value: approx. 10 kΩ) LL to be set up with respect to the measured value (indicated value) Control signal HI level: 4.2 to 5 V with respect to terminal COM...
  • Page 10 Instruction Manual for MODEL A7X18-X(Temperature Measurement) 10/12 8. Specifications and Outer Dimensions 8.3. Output Specifications 8.1. Input Specifications Comparison Output 8.3.1. Cold junction Measurement Error Range Sensor compensation Control method: Microcomputer-based calculation method range (23°C ± 5°C, 35 to 85%)
  • Page 11: Timing Chart

    Instruction Manual for MODEL A7X18-X(Temperature Measurement) 11/12 Analog Output 8.3.3. 9. Timing Chart Conversion method: PWM conversion Resolution: 13 bits or equivalent Start/hold type A Scaling: Digital scaling Internal Response rate: Approx. 0.5 seconds sampling Output Type Resistive Load Accuracy...
  • Page 12: Error Messages

    Indicates that a signal exceeding the measurement range has been applied. be caused by a defect ascribable to Watanabe Electric Industry, we will repair the failure or replace any defective parts without charge. Indicates that an input signal once exceeded the measurement range, but has returned to the measurable range with the peak hold function activated.

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A7000 series

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