Aspar SDM-8AI User Manual

Expansion module-8 analog inputs
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SDM-8AI
Expansion Module – 8 analog inputs
Version 1.2
User Manual
Manufactured for

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Table of Contents
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Summary of Contents for Aspar SDM-8AI

  • Page 1 SDM-8AI Expansion Module – 8 analog inputs Version 1.2 User Manual Manufactured for...
  • Page 2 SDM-8AI User Manual Thank you for choosing our product. This manual will help you with proper support and proper operation of the device. The information contained in this manual have been prepared with utmost care by our professionals and serve as a description of the product without incurring any liability for the purposes of commercial law.
  • Page 3: Safety Rules

    2. Module Features 2.1. Purpose and description of the module SDM-8AI module allows measurement of voltages and currents. Values are read via RS485 (Modbus), so we can easily integrate the module with popular PLCs, HMI or PC equipped with the appropriate adapter.
  • Page 4: Technical Specifications

    SDM-8AI User Manual 2.2. Technical Specifications Voltage 10-30 VDC; 10-28VAC DC: 52 mA @ 24VDC Power Supply Maximum Current AC: 62 mA @ 24VAC Maximum power consumption DC: 1,25W; AC: 1,5VA No of inputs Voltage input 0V do 10V (resolution 1.5mV) Voltage input -10V do 10V (resolution 1.5mV)
  • Page 5: Dimensions Of The Product

    SDM-8AI User Manual 2.3. Dimensions of the product Look and dimensions of the module are shown below. The module is mounted directly to the rail in the DIN industry standard. Power connectors, communication and IOs are at the bottom and top of the module. USB connector configuration and indicators located on the front of the module.
  • Page 6: Communication Configuration

    SDM-8AI User Manual 3. Communication configuration 3.1. Grounding and shielding In most cases, IO modules will be installed in an enclosure along with other devices which generate electromagnetic radiation. Examples of these devices are relays and contactors, transformers, motor controllers etc. This electromagnetic radiation can induce electrical noise into both power and signal lines, as well as direct radiation into the module causing negative effects on the system.
  • Page 7: Types Of Modbus Registers

    SDM-8AI User Manual 3.4. Types of Modbus Registers There are 4 types of variables available in the module Beginning Modbus Type Variable Access address Command 00001 Digital Outputs 1, 5, 15 Read & Write 10001 Digital Inputs Read Registered 30001...
  • Page 8: Configuration Registers

    SDM-8AI User Manual 3.5.3. Configuration registers Modbus Name Values 0 – 2400 1 – 4800 2 – 9600 3 – 19200 40003 0x02 Baud rate 4 – 38400 5 – 57600 6 – 115200 other – value * 10 0 – none 1 –...
  • Page 9: Switches

    SDM-8AI User Manual 4. Switches Switch Function Description Module address +1 Module address +2 Module address +4 Module address +8 Setting module address from 0 to 127 Module address +16 Module address +32 Module address +64 Restoring default settings Restoring default settings (see 3.5.2 - Restore the default configuration).
  • Page 10: Front Panel Removing

    SDM-8AI User Manual 5. Front panel removing To remove the panel and gain access to the switch, you must pry open the panel using a thin tool (eg a small screwdriver) as in the picture below. Expansion Module – 8 analog inputs User Manual Version 1.2...
  • Page 11: Indicators

    SDM-8AI User Manual 6. Indicators Inputs 1 – 4 state Output 1 state Communication mini USB configuration connector Power supply Output 2 state Inputs 5 – 8 state Indicator Description Power supply LED indicates that the module is correctly powered.
  • Page 12: Module Connection

    SDM-8AI User Manual 7. Module Connection Expansion Module – 8 analog inputs User Manual Version 1.2 12 / 18...
  • Page 13: Selecting The Input Mode

    SDM-8AI User Manual 8. Selecting the input mode Each input can be used to measure the voltage (the default) or current. To change the operating mode in addition to configuration changes by using the program, also set the jumpers inside the module as shown below.
  • Page 14: Modules Registers

    SDM-8AI User Manual 10. Modules Registers 10.1. Registered access Modbus Register Name Access Description 30001 0x00 Version/Type Read Version and Type of the device 30002 0x01 Switches Read Switches state Baud rate Read & Write RS485 baud rate 40003 0x02 No of Stop bits &...
  • Page 15 SDM-8AI User Manual Modbus Register Name Access Description 40073 0x48 MIN alarm level 3 Read & Write 40074 0x49 MIN alarm level 4 Read & Write 40075 0x4A MIN alarm level 5 Read & Write MIN alarm level 6 Read & Write...
  • Page 16: Bit Access

    SDM-8AI User Manual Modbus Register Name Access Description 40100 0x63 Alarm hysteresis 2 Read & Write 10.2. Bit access Modbus Register name Access Description Address Address Address 0x320 Input 1 Read Set when the input is connected 0x321 Input 2...
  • Page 17: Configuration Software

    SDM-8AI User Manual 11. Configuration software Modbus Configurator is software that is designed to set the module registers responsible for communication over Modbus network as well as to read and write the current value of other registers of the module. This program can be a convenient way to test the system as well as to observe real-time changes in the registers.
  • Page 18: Table Of Contents

    SDM-8AI User Manual Table of Content 1. Safety rules............................3 2. Module Features..........................3 2.1. Purpose and description of the module..................3 2.2. Technical Specifications......................4 2.3. Dimensions of the product......................5 3. Communication configuration......................6 3.1. Grounding and shielding......................6 3.2. Network Termination........................6 3.3. Setting Module Address in RS485 Modbus Network...............6 3.4.

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