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Pt100 Input Module
Thank you for buying the Mitsubishi general-purpose programmable
logic controller MELSEC Series
Prior to use, please read both this manual and detailed manual
thoroughly and familiarize yourself with the product.
© 2002 MITSUBISHI ELECTRIC CORPORATION
User's Manual
A68RD3N/4N
A1S62RD3N/4N
MODEL A68/A1S62RD-U-HW
MODEL
CODE
IB(NA)-0800202-D(1112)MEE
(Hardware)
13JT68
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Summary of Contents for Mitsubishi MELSEC A68RD3N
- Page 1 Pt100 Input Module User’s Manual (Hardware) A68RD3N/4N A1S62RD3N/4N Thank you for buying the Mitsubishi general-purpose programmable logic controller MELSEC Series Prior to use, please read both this manual and detailed manual thoroughly and familiarize yourself with the product. MODEL A68/A1S62RD-U-HW...
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Page 2: Safety Precautions
SAFETY PRECAUTIONS (Read these precautions before using this product.) Before using this product, please read this manual and the relevant manuals carefully and pay full attention to safety to handle the product correctly. In this manual, the safety precautions are classified into two levels: "... - Page 3 [INSTALLATION PRECAUTIONS] CAUTION Use the programmable controller in an environment that meets the general specifications in the user's manual for the CPU module used. Using the PLC outside the range of the general specifications may result in electric shock, fire or malfunction, or may damage or degrade the module. Before mounting the module, insert the module fixing hook at the bottom of the module into the fixing hole in the base unit.
- Page 4 [STARTING AND MAINTENANCE PRECAUTIONS] CAUTION Do not touch the terminals before switching power off externally in all phases. Doing so can cause a malfunction. Start cleaning or terminal screw retightening after switching power off externally in all phases. Not doing so can cause a malfunction. Do not disassemble or modify any module.
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Page 5: Conditions Of Use For The Product
CONDITIONS OF USE FOR THE PRODUCT (1) Mitsubishi programmable controller ("the PRODUCT") shall be used in conditions; i) where any problem, fault or failure occurring in the PRODUCT, if any, shall not lead to any major or serious accident; and... - Page 6 PRODUCT in one or more of the Prohibited Applications, provided that the usage of the PRODUCT is limited only for the specific applications agreed to by Mitsubishi and provided further that no special quality assurance or fail-safe, redundant or other safety features which exceed the general specifications of the PRODUCTs are required.
- Page 7 This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent licenses. Mitsubishi electric Corporation cannot be held responsible for any problems involving industrial property rights which may occur as a result of using the contents noted in this manual.
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Page 8: Table Of Contents
CONTENTS 1. Overview ......................1 2. Specification ....................1 2.1 Performance specifications ..............1 2.2 Specifications when platinum resistance bulb is connected..... 3 3. Names and Setting of Parts ................4 3.1 Names of Parts..................4 3.2 Error compensation procedures ............... 7 4. -
Page 9: Overview
1. Overview This manual explains the specifications and part names of: • Pt100 Input Module Type A68RD3N (hereafter abbreviated to the A68RD3N) • Pt100 Input Module Type A68RD4N (hereafter abbreviated to the A68RD4N) • Pt100 Input Module Type A1S62RD3N (hereafter abbreviated to the A1S62RD3N) •... - Page 10 Specifications Item A68RD3N A68RD4N A1S62RD3N A1S62RD4N Temperature detecting output current Across platinum temperature measuring resistor input - PLC power supply: Insulation system Photocoupler-insulated Across platinum temperature measuring resistor input - channel: Non-insulated Across platinum temperature measuring resistor input - PLC power Insulation resistance supply: 500VAC for 1 minute...
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Page 11: Specifications When Platinum Resistance Bulb Is Connected
2.2 Specifications when platinum resistance bulb is connected (1) For A68RD3N and A1S62RD3N Make sure that the conductor resistance value between the Pt100 and A68RD3N/A1S62RD3N is 10 [Ω] or less per wire. All channels have the same specifications. 10 or Conductor Wire so that the following is satisfied: A68RD3N... -
Page 12: Names And Setting Of Parts
3. Names and Setting of Parts 3.1 Names of Parts Terminal Block Layout Terminal number Signal A68RD A68RD name TEST TEST Blank b1/a2 b2/a3 b3/a4 b4/a5 b5/a6 b6/a7 b7/a8 Blank ANALOG GND... - Page 13 Terminal Block Layout Terminal number Signal A1S62 A1S62 name RD3N RD4N TEST Blank TEST Blank Blank Blank Blank Blank Blank Blank Name Details In normal operation Normal Flicker Write data error occurring mode Operation 5VDC power OFF or watch dog timer error occurring status display Flicker When the OFFSET/GAIN setting switch is set to...
- Page 14 Name Details Increments/decrements the offset value/gain value for the channel being used at the following rate. UP/DOWN 1) ON for less than 1.5 seconds: Increments/decrements in 0.025°C units. switch 2) ON for 1.5 seconds or more: Increments/decrements in 0.1°C unit every 0.04 seconds.
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Page 15: Error Compensation Procedures
3.2 Error compensation procedures Start Adjust to the offset value with the UP/DOWN switch. Short-circuit the TEST terminals (A68RD3N/4N:Terminals1-2, A1S62RD3N/4N:Terminals1-3), and enter the test mode. DOWN Buffer memory Using the channel selection switch, -497 -500 set the channel to be compensated. Input the value for the offset value. - Page 16 Input the value for the gain value. Set the OFFSET/GAIN setting switch to SET. 80 [ °C] RD3N/4N OFF SET The gain value will be saved. Pt100 or GAIN standard resistor, etc. Set the OFFSET/GAIN setting switch to GAIN. Is compensation of the channel being used RUN LED flickers OFF SET...
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Page 17: Handling
4. Handling (1) The main case and terminal block are made of resin, so do not drop it or apply strong impacts. (2) Do not remove the module's PCB from the case. Failure to observe this could lead to faults. (3) Make sure that foreign matter, such as wire scraps, do not enter the module during wiring. -
Page 18: Connection To A68Rd3N, A1S62Rd3N
5.2 Connection to A68RD3N, A1S62RD3N (1) The highest precision can be achieved by connecting a 3-wire type Pt100 to the A68RD3N and A1S62RD3N. An example of connecting a 3-wire Pt100 is shown below. Ex. the A68RD3N Internal circuit Shield Internal circuit ANALOG *1 Also ground the power supply unit's FG. -
Page 19: Connection To A68Rd4N, A1S62Rd4N And Precautions
5.3 Connection to A68RD4N, A1S62RD4N and precautions (1) The highest precision can be achieved by connecting a 4-wire type Pt100 to the A68RD4N and A1S62RD4N. An example of connecting a 4-wire Pt100 is shown below. Ex. the A68RD4N Constant current circuit Internal circuit... - Page 20 (3) Precautions for connection to A68RD4N and A1S62RD4N The following are the precautions for connection of Pt100 to the A68RD4N and A1S62RD4N. (a) Perform wiring so that there is continuity between the following terminals. When all channels are used on A68RD4N CH.1 CH.2 CH.3...
- Page 21 Point Always specify "conversion disable" for the channels not connected with Pt100. When the channels not connected with Pt100 are specified as "conversion enable", the wire break detection flag turns ON if a wire break does not occur on the channel connected with PT100.
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Page 22: External Dimension Diagram
6. External Dimension Diagram 6.1 A68RD3N 4.2 (0.17) N3 x 0.5 x 6 Installation screw 6(0.24) 10 (0.39) 106 (4.18) (0.71) (0.17) (0.99) 131 (5.16) 37.5 (1.48) Unit:mm(inch) -
Page 23: A68Rd4N
6.2 A68RD4N 4.2 (0.17) N3 x 0.5 x 6 Installation screw 6 (0.24) 10 (0.39) 106 (4.18) (0.71) (0.17) (0.99) 131 (5.16) 37.5 (1.48) Unit:mm(inch) -
Page 24: A1S62Rd3N
6.3 A1S62RD3N 93.6 34.5 (0.26) (3.69) (0.29) (1.36) Unit:mm(inch) -
Page 25: A1S62Rd4N
6.4 A1S62RD4N 93.6 34.5 (0.26) (3.69) (0.29) (1.36) Unit:mm(inch) - Page 26 MEMO...
- Page 27 MEMO...
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Page 28: Warranty
WARRANTY Mitsubishi will not be held liable for damage caused by factors found not to be the cause of Mitsubishi; machine damage or lost profits caused by faults in the Mitsubishi products; damage, secondary damage, accident compensation caused by special factors unpredictable by Mitsubishi;...
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