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Documentation | EN
KL3224
Four channel analog input terminal for PT1000, Ni1000
2021-07-07 | Version: 2.0.0

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Summary of Contents for Beckhoff KL3224

  • Page 1 Documentation | EN KL3224 Four channel analog input terminal for PT1000, Ni1000 2021-07-07 | Version: 2.0.0...
  • Page 3: Table Of Contents

    Table of contents 1 Foreword .............................. 5 Notes on the documentation...................... 5 Safety instructions .......................... 6 Documentation issue status ...................... 7 Beckhoff Identification Code (BIC) .................... 8 2 Product overview............................. 10 KL3224 - Introduction ........................ 10 Technical data .......................... 11 Basic function principles ........................ 11 3 Mounting and wiring.......................... 14 Instructions for ESD protection ...................... 14...
  • Page 4 Table of contents Version: 2.0.0 KL3224...
  • Page 5: Foreword

    , XTS and XPlanar are registered trademarks of and licensed by Beckhoff Automation GmbH. Other designations used in this publication may be trademarks whose use by third parties for their own purposes could violate the rights of the owners. Patent Pending...
  • Page 6: Safety Instructions

    All the components are supplied in particular hardware and software configurations appropriate for the application. Modifications to hardware or software configurations other than those described in the documentation are not permitted, and nullify the liability of Beckhoff Automation GmbH & Co. KG. Personnel qualification This description is only intended for trained specialists in control, automation and drive engineering who are familiar with the applicable national standards.
  • Page 7: Documentation Issue Status

    Version Comment 2.0.0 • Migration • Document structure updated • Chapter Beckhoff Identification Code (BIC) added • Chapter Notes on ESD protection added • Safety instructions adapted to IEC 82079-1 • New title page • First release Firmware and hardware versions...
  • Page 8: Beckhoff Identification Code (Bic)

    Foreword Beckhoff Identification Code (BIC) The Beckhoff Identification Code (BIC) is increasingly being applied to Beckhoff products to uniquely identify the product. The BIC is represented as a Data Matrix Code (DMC, code scheme ECC200), the content is based on the ANSI standard MH10.8.2-2016.
  • Page 9 Example of composite information from item 1 to 4 and 6. The data identifiers are marked in red for better display: An important component of the BIC is the Beckhoff Traceability Number (BTN, item no. 2). The BTN is a unique serial number consisting of eight characters that will replace all other serial number systems at Beckhoff in the long term (e.g.
  • Page 10: Product Overview

    Fig. 2: KL3224 - 4-channel analog input terminal PT1000, Ni1000 The KL3224 analog input terminal allows resistance sensors to be connected directly. A micro-controller within the terminal is used for converting and linearizing the resistance value to a temperature value. The temperatures are displayed as follows: 1/10 °C (1 digit = 0.1 °C)
  • Page 11: Technical Data

    Product overview Technical data Technical data KL3224 Number of inputs Power supply via the K-bus Sensor types PT1000, Ni1000 Connection technology 2-wire Temperature range 0 °C ... +40 °C Resolution 0.1 °C per digit Electrical isolation 500 V (K-bus / signal voltage) Conversion time approx.
  • Page 12 The LEDs indicate the operating state of the associated terminal channels. Red LEDs: ERROR • On: Short circuit or wire breakage. The resistance value is in the invalid range of the characteristic curve. • Off: The resistance is in the valid range of the characteristic curve. Version: 2.0.0 KL3224...
  • Page 13: Fig. 3 Kl3224X - Data Flow

    Y_TAS = A_w * Y_T + B_w (1.6) User scaling active Y_AUS = Y_TAS Y_1 = A_h * Y_T + B_h (1.7) Manufacturer and user scaling active Y_2 = A_w * Y_1 + B_w Y_AUS = Y_2 Fig. 3: KL3224x - Data flow KL3224 Version: 2.0.0...
  • Page 14: Mounting And Wiring

    • Surroundings (working place, packaging and personnel) should by grounded probably, when handling with the devices. • Each assembly must be terminated at the right hand end with a KL9010 bus end terminal, to ensure the protection class and ESD protection. Fig. 4: Spring contacts of the Beckhoff I/O components Version: 2.0.0 KL3224...
  • Page 15: Installation On Mounting Rails

    To mount the mounting rails with a height of 7.5 mm under the terminals and couplers, you should use flat mounting connections (e.g. countersunk screws or blind rivets). KL3224 Version: 2.0.0...
  • Page 16: Fig. 6 Disassembling Of Terminal

    EL91xx, EL92xx) interrupt the power contacts and thus represent the start of a new supply rail. PE power contact The power contact labeled PE can be used as a protective earth. For safety reasons this contact mates first when plugging together, and can ground short-circuit currents of up to 125 A. Version: 2.0.0 KL3224...
  • Page 17: Fig. 7 Power Contact On Left Side

    Power Feed Terminals can be released and pulled at least 10 mm from the group of terminals. WARNING Risk of electric shock! The PE power contact must not be used for other potentials! KL3224 Version: 2.0.0...
  • Page 18: Connection

    Insert the new component and plug in the connector with the wiring. This reduces the installation time and eliminates the risk of wires being mixed up. The familiar dimensions of the terminal only had to be changed slightly. The new connector adds about 3 mm. The maximum height of the terminal remains unchanged. Version: 2.0.0 KL3224...
  • Page 19: Wiring

    “bonded” (ultrasonically welded) conductors. In this case, please note the tables concerning the wire-size width! 3.3.2 Wiring WARNING Risk of electric shock and damage of device! Bring the bus terminal system into a safe, powered down state before starting installation, disassembly or wiring of the bus terminals! KL3224 Version: 2.0.0...
  • Page 20: Fig. 11 Connecting A Cable On A Terminal Point

    0.08 ... 1.5 mm Wire size width (fine-wire conductors) 0.25 ... 1.5 mm Wire size width (conductors with a wire end sleeve) 0.14 ... 0.75 mm Wire size width (ultrasonically “bonded" conductors) only 1.5 mm Wire stripping length 8 ... 9 mm Version: 2.0.0 KL3224...
  • Page 21: Shielding

    3.3.3 Shielding Shielding Encoder, analog sensors and actors should always be connected with shielded, twisted paired wires. 3.3.4 Connection Fig. 12: KL3224 - connection and LEDs Connection Terminal point No. Comment Input +R1 - R1 Input –R1 Input +R3 Input -R3 Input +R2 Input –R2...
  • Page 22: Configuration Software Ks2000

    Fieldbus Box modules with the aid of which settings can be modified easily. Alternatively, you have full access to all internal registers of the bus couplers and intelligent terminals. Refer to the register description for the meanings of the registers. Version: 2.0.0 KL3224...
  • Page 23 • Process values can be specified in the output image for commissioning of the output modules. All possibilities in the online mode can be used in parallel with the actual fieldbus mode of the terminal station. The fieldbus protocol always has the higher priority in this case. KL3224 Version: 2.0.0...
  • Page 24: Access From The User Program

    If the control and status byte are not evaluated, the terminals occupy 2 bytes per channel: • KL3202: 4 bytes of input data • KL3224: 8 bytes of input data Fig. 15: Mapping in the Profibus coupler – example for KL3202 Version: 2.0.0...
  • Page 25: Mapping In The Bus Coupler

    The BK4000 Interbus Coupler maps the terminals in the delivery state with 2 bytes per channel: • KL3202: 4 bytes of input data • KL3224: 8 bytes of input data Parameterization via the fieldbus is not possible. If the control and status byte is to be used, the KS2000 configuration software is required.
  • Page 26 Ch n D1 Channel n, data byte 1 (byte with the highest value) "-" This byte is not used or occupied by the terminal. Res. Reserved: This byte occupies process data memory, although it is not used. Version: 2.0.0 KL3224...
  • Page 27: Control And Status Byte

    A gain and offset calibration of the terminal can be carried out with the control byte. The code word must be entered in R31 so that the terminal calibration can be carried out. The gain and offset of the terminal can then be calibrated. The parameter will only be saved permanently once the code word is reset! KL3224 Version: 2.0.0...
  • Page 28: Compensation

    The gain and offset compensation only has to be carried out once, i.e. it does not have to be repeated or corrected for any of the other implemented elements For the two-wire connection, with short-circuited line resistance (+R1-Rl1) the raw ADC value of the line resistance (contained in R1) has to be entered in register R21. Version: 2.0.0 KL3224...
  • Page 29: Register Overview

    … … reserved 0x0000 Diagnostic register variable R6 [} 30] Command register not used 0x0000 R7 [} 30] Terminal type e.g., KL3224 R8 [} 30] Software version number 0x???? R9 [} 30] Multiplex shift register 0x0218/0130 R10 [} 30] Signal channels 0x0218 R11 [} 31] Minimum data length 0x0098 R12 [} 31]...
  • Page 30: Register Description

    R9: Software version (X.y) The software version can be read as a string of ASCII characters. R10: Data length R10 contains the number of multiplexed shift registers and their length in bits. The Bus Coupler sees this structure. Version: 2.0.0 KL3224...
  • Page 31 This register is used for offset compensation of the terminal (Eq. 1.1). Register value approx. 0xEDXX R18: Hardware compensation – gain (A_a) 16 bits * 16 (approx. 0,01907 Ω/digit) This register is used for gain compensation of the terminal (Eq. 1.1). Register value approx. 0x27XX KL3224 Version: 2.0.0...
  • Page 32 Two-wire connection [0] Bit 11 reserved, do not change Bit 12, 13, 14, 15 Element Valid measuring range 0 0 1 0 PT1000 0 °C ... 40 °C 0 1 0 1 NI1000 0 °C ... 40 °C Version: 2.0.0 KL3224...
  • Page 33 This documentation applies to all terminals from firmware version 3x. The version number can be found within the serial number on the right-hand side face of the terminal: xxxx3xxx Example: 52983A2A = the firmware version is 3A. Filter constant First notch [Hz] Conversion time [ms] 0x0000 0x50 0xA0 0x140 0x280 12.5 KL3224 Version: 2.0.0...
  • Page 34: Register Communication

    2 data bytes. (The BK2000 is an exception: here, an unused data byte is inserted after the control or status byte, and the register value is therefore placed on a word boundary). Version: 2.0.0 KL3224...
  • Page 35: Examples Of Register Communication

    • The output data word (byte 1 and byte 2) has no meaning during read access. To change a register, write the required value into the output word. Input Data (answer of the Bus Terminal) Byte 0: Status byte Byte 1: DataIN1, high byte Byte 2: DataIN1, low byte 0x89 0x33 0x41 Explanation: KL3224 Version: 2.0.0...
  • Page 36: Example 2: Writing To An User Register

    • Bit 0.6 not set means: reading the register. • Bits 0.5 to 0.0 specify the register number 31 with 01 1111 • The output data word (byte 1 and byte 2) has no meaning during read access. Version: 2.0.0 KL3224...
  • Page 37 • Bit 0.6 not set means: reading the register. • Bits 0.5 to 0.0 indicate register number 32 with 10 0000 • The output data word (byte 1 and byte 2) has no meaning during read access. KL3224 Version: 2.0.0...
  • Page 38 • The terminal returns a value as a receipt in the status byte that differs only in bit 0.6 from the value of the control byte. • The input data word (byte 1 and byte 2) is of no importance after the write access. Any values still displayed are invalid! Version: 2.0.0 KL3224...
  • Page 39: Appendix

    Please contact your Beckhoff branch office or representative for local support and service on Beckhoff products! The addresses of Beckhoff's branch offices and representatives round the world can be found on her internet pages: https://www.beckhoff.com You will also find further documentation for Beckhoff components there.
  • Page 40 Table of figures Fig. 1 BIC as data matrix code (DMC, code scheme ECC200)............. Fig. 2 KL3224 - 4-channel analog input terminal PT1000, Ni1000 ............Fig. 3 KL3224x - Data flow ........................Fig. 4 Spring contacts of the Beckhoff I/O components.................
  • Page 42 Beckhoff Automation GmbH & Co. KG Hülshorstweg 20 33415 Verl Germany Phone: +49 5246 9630 info@beckhoff.com www.beckhoff.com...

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