Remote I - techintroduce

Basic introduction

Simply speaking, remote I/O is a data acquisition/transmission module with communication function, without its own control and adjustment function. Just send the field data to the control center (such as PLC), or accept the data from the control center to control the field equipment.

There are many communication methods, and each manufacturer has its own standards, such as Freeport communication, PROFIBUS, MODBUS, and so on.

Example: console; console buttons, indicator lights.

In the past, control cables were used to connect with PLC. If remote I/O is used, it can be connected to the PLC through a communication line, which saves wiring and saves the I/O points of the PLC itself

Applications

1. Building Automation (Building Automation)

The depth of the roof water tank, the water temperature of the water tank, the indoor smoke detection, the alarm switch

2, the intelligent transportation (Intelligent Transportation System)

Examples of subways: traffic lights, carbon dioxide concentration monitoring, oxygen concentration monitoring, smoke concentration monitoring, exhaust fan control

3, Water Management System (Water Management System)

Water level control monitoring and alarm, Water flow monitoring, water pollution index control, water temperature monitoring

4, Intelligent Transportation for Highways (Intelligent Transportation for Highways)

Vehicles are controlled by detection and traffic lights

5, Energy Management System (Power Management System)

Examples of wind power plants, wind speed monitoring, windmill speed monitoring, voltage monitoring, current monitoring

6, environmental monitoring (Environmental Monitoring )

Temperature, humidity, wind speed, air composition monitoring

7, Factory Automation (Factory Automation)

In short: as long as there is "natural" information System, it will involve the need for I/O.

Control module

Brand: Link-Max

Model: I-7011, I-7012, I-7017, I-7024, LM-7017, LM-7021, LM-7024……

Introduction:

Link-Max analog remote I/O measurement and control module, using the industry-wide Modbus RTU protocol, high performance from ADI Analog-to-digital conversion chip, Japanese NEC photoelectric isolation device, provide users with multi-range, high withstand voltage isolation, long-distance, low drift, wide operating temperature environment, cost-effective, far superior to similar intelligent measurement and control solutions. Representative models are: I-7011, I-7012, I-7017, I-7024, LM-7017, LM-7021, LM-7024, etc. Take I-7017 as an example below.

The Link-Max I-7017 non-isolated Modbus protocol eight-channel current loop remote I/O acquisition module has a total of 8 differential inputs. The module has a 16-bit resolution and a communication rate of up to 115.2K. It is mainly used for Industrial field or other distributed data collection. I-7017 adopts simple and easy-to-operate software calibration, users can easily perform zero and full-scale calibration.

The acquisition module adopts the RS485 communication network, and transmits the analog quantity of scattered field data points to the host computer through AD conversion or the remote main site is controlled by the PC. It has a unique dual watchdog safety design, which consists of a software watchdog and a hardware watchdog. In case of a program flying off the module, it can be restarted instantly. Each acquisition module can be interlocked with the main control computer by a software watchdog. In case the main control computer crashes, all output modules will enter the preset safe state, which meets the safety requirements of the industry.

If the RS485 communication network is faulty or disconnected, the host computer and the module will not be able to interlock and communicate, and the software watchdog will also be activated. The design of the software watchdog is very ingenious and easy to use, which can greatly increase the security of the system.

Parameters

Input port: 8-channel differential

Wiring interface: use external 10-bit wiring terminal, which can easily disassemble the connection

Input type: mA (there is a high-precision 100 ohm resistor inside, no need to connect externally)

Input range: 4～20mA

Input impedance: 100 ohm

Sampling rate: 15 times per second

Resolution: 16 bits

Bandwidth: 15.75Hz

Accuracy: ±0.02% or better

Zero point drift: 20uV/°C

Full range drift: 25ppm/°C CMR@50/60Hz: 92dB min

Overvoltage protection: ±35V

Optical isolation withstand voltage: 3750Vrms

Microprocessor: Built-in 22M CPU with watchdog, high speed and reliability, preventing crashes

RS485 rate: 1200～ 115200BPS and RS485 bus speed self-adaptation, no need to set

Parameter setting: Baud rate, checksum need to be grounded to the INIT terminal, and other parameters can be changed in real time

Status indicator: The power-on self-test passes the constant light, and it flashes during communication.

Remote I

Working temperature: -25°C～+75°C

Storage temperature: -40°C～+85°C

Working humidity: 5%～95%, no condensation

External power supply voltage: +10～30V

Power consumption: 1.3W

Installation method: Optional standard DIN rail installation or simple fixing method

Model guide

LM-7017 Eight-channel voltage and current multi-range analog input remote I/O data acquisition module

LM-7017F high-speed eight-channel voltage and current multi-range analog input remote I/O data acquisition module

I-7011 non-isolated Modbus protocol single-channel current loop remote I/O acquisition module

I-7012 non-isolated Modbus protocol dual-channel current loop remote I/O acquisition module

I-7013 fully isolated Modbus protocol single-channel current loop remote I/O acquisition module

I-7014 non-isolated Modbus protocol four-channel current loop remote I/O acquisition module

I-7017 non-isolated Modbus protocol eight-channel current loop remote I/O acquisition module

I-7017-xx eight-channel Modbus protocol voltage acquisition module xx=voltage value has 0.15V 0.5V 1V 5V 10V

I-7018 front and rear optical isolation Modbus protocol eight-channel current loop remote I/O acquisition Module

I-7021 Fully isolated Modbus protocol single channel current loop remote I/O output module

I-7022 Fully isolated Modbus protocol dual channel current loop remote I/O output module

I-7024 Fully isolated Modbus protocol four-channel current loop remote I/O output module

LM-7012 Single-channel voltage and current multi-range analog input remote I/O data acquisition module with alarm function

LM-7012F High-speed single-channel voltage and current multi-range analog input remote I/O data acquisition module with alarm function

LM-7012D Single-channel voltage and current multi-range display with alarm function Analog input remote I/O data acquisition module

LM-7017M 8-channel multi-range analog remote I/O input module with storage function

LM-7018 8-channel analog And thermocouple (JKTERSBNC) input module

LM-7018BL 8-channel analog and thermocouple (JKTERSBNC) remote I/O input module with burnout detection

LM-7018RC with RC filter 8-channel analog and thermocouple (JKTERSBNC) remote I/O input module

LM-7018M 8-channel analog and thermocouple (JKTERSBNC) remote I/O input module with storage function

LM-7018D 8-channel analog and thermocouple (JKTERSBNC) remote I/O input module with address switch

LM-7011 single-channel analog and thermocouple (JKTERSBNC) remote I/O input module

LM-7021 single-channel 12-bit analog remote I/O output module

LM-7021P single-channel 16-bit analog remote I/O output module

LM-7022 dual-channel 12-bit analog remote I/O output module

LM-7024 four-channel 12-bit analog remote I/O output module

LM-7041 Modbus/ASCII dual protocol 14-channel single-ended 3750V isolated digital remote I/O input module with LED display

LM-7042 Modbus/ASCII dual protocol 13-channel 3750V isolated set with LED display Electrode open circuit digital quantity remote I/O output module

LM-7043 Modbus/ASCII dual protocol 16-channel open collector digital quantity remote I/O output module with LED display

LM -7044 Modbus/ASCII dual protocol 4 channels 3750V isolated digital input with LED display/8 3750V isolated open-collector digital remote I/O output module

LM-7045 Modbus/ASCII dual protocol 16-channel 3750V isolated open-source digital remote I/O output module with LED display

LM-7050 Modbus/ASCII dual protocol 7-channel single-ended digital input with LED display/8-channel NPN tube open collector digital remote I/O output module

LM-7050A Modbus/ASCII dual protocol 7-channel single-ended digital input with LED display/8-channel PNP tube open collector digital remote I/O output module

LM-7051 Modbus/ASCII dual protocol with LED display 16 channels 3750V isolated single-ended digital remote I/O input module

LM-7052 Modbus/ASCII dual protocol 6 channels with LED display 6 differential 2 channels single-ended 5000V isolated digital remote I/O input Module

LM-7053 Modbus/ASCII dual protocol 16-channel single-ended non-isolated dry contact digital remote I/O input module with LED display

LM-7055 Modbus/ASCII dual Protocol Modbus/ASCII dual protocol 8-channel 3750V isolated digital input with LED display/8-channel 3750V isolated open-source digital remote I/O output module

LM-7060 Modbus/ASCII dual protocol with LED Displayed 4-way 3750V isolated digital input/4-way relay output module, two-way A type (single pole single throw), two way C type (single pole double throw)

LM-7063 Modbus/ASCII dual protocol with LED Displayed 8 channels 3750V isolated digital input/3 channels A type (single pole single throw) relay remote I/O output module

LM-7065 Modbus/ASCII dual protocol 4 channels 3750V isolated digital input with LED display Input/5 channels A type (single pole single throw) power relay remote I/O output module

LM-7067 Modbus/ASCII dual protocol 7 channels A type (single pole single throw) relay remote with LED display I/O output module

LM-7068 Modbus/ASCII dual protocol 8-channel A type (single pole single throw) relay remote I/O output module with LED display

LM-7080 Modbus/ASCII dual protocol dual channel counter frequency module