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mcf88 MCF-LW06420 - User Manual

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Manual MCF-LW06420
Rev.1
1 of 5
1. DESCRIPTION
MCF-LW06420 is able to read 2 analog inputs 4-20mA and 2 analog inputs 0-10V with a resolution of 12 bit.
The inputs have an insulation of 1000Vdc with respect to the power supply, and are protected against
polarity inversion.
2. CONNECTION OF THE DEVICE
Make the connections as follows:
2.1 Power supply:
➢ red wire: positive power supply (range 10-36Vdc)
➢ black wire: negative power supply
Power can also be supplied by USB.
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Overview

  1. Technical Specifications for Analog Inputs
  2. Detailed Input Characteristics
  3. Usage Features
  4. LoRaWAN™ Activation
  5. Device Configuration
  6. Maintenance Features
  7. Installation
  8. Ordering Information

The MCF-LW06420 is a versatile device designed to interface analog sensors with a LoRaWAN™ network, offering robust data acquisition and wireless transmission capabilities. It supports two analog inputs for 4-20mA current loops and two analog inputs for 0-10V voltage signals, all with a 12-bit resolution. This resolution allows for precise measurement of sensor data, making it suitable for applications requiring accurate monitoring.

A key technical specification is the 1000Vdc insulation provided for the analog inputs, ensuring electrical isolation from the power supply. This insulation enhances safety and protects the device from potential damage due to ground loops or voltage spikes. Additionally, the inputs are protected against polarity inversion, adding another layer of robustness to the device's design.

Technical Specifications for Analog Inputs:

Pin Name Description Range Resolution
J1.1 AI1 Analog input 1 4-20mA 12 bit
J1.2 GA Common
J1.3 AI2 Analog input 2 4-20mA 12 bit
J1.4 GA Common
J1.5 AI3 Analog input 3 0-10V 12 bit
J1.6 GA Common
J1.7 AI4 Analog input 4 0-10V 12 bit
J1.8 GA Common

Detailed Input Characteristics:

Characteristic Voltmetric (0-10V) Current Loop (4-20mA)
Input resistance 20KΩ 125Ω
Absolute maximum value 12V 24mA
Max error ±0.1%
Insulation 1000Vdc

It's important to note that for current inputs AI1 and AI2, current values less than 3mA will trigger a "disconnected sensor" condition, indicating a potential issue with the sensor or wiring. A crucial caution is that the inputs are not galvanically isolated from each other, meaning they share a common ground reference.

Usage Features:

The device offers flexible power supply options. It can be powered via a red wire for positive power supply (range 10-36Vdc) and a black wire for negative power supply. Alternatively, power can be supplied via a USB connection, providing convenience for setup and configuration.

Connecting the device involves straightforward steps:

  1. Power Supply: Connect the red wire to the positive power supply (10-36Vdc) and the black wire to the negative power supply. USB can also be used for power.
  2. Analog Inputs: Connect sensors to the appropriate analog input pins (AI1-AI4) and their respective common grounds (GA). Connection examples are provided for both single and dual current loop sensors, illustrating how to wire them to the MCF-LW06420.
  3. Antenna Connection: The antenna should be connected as shown in the manual, using the provided clip to secure the connector in place. This ensures optimal signal transmission for the LoRaWAN™ communication.

LoRaWAN™ Activation:

The MCF-LW06420 supports various activation modes for integration into a LoRaWAN™ network:

  • NONE: The sensor is not activated. This is the factory default mode.
  • OTAA (Over-The-Air Activation): Requires the settings of appkey and appEUI.
  • OTAA MCF88: Over-the-air activation specifically according to mcf88 specifications.
  • ABP (Activation By Personalization): Requires the settings of NwkSkey, AppSkey, and DevAddr.

The device is factory-activated in NONE mode. The devEUI (Device Extended Unique Identifier) is provided on the product label, which is essential for network registration. The MCF-LW06420 operates as a Class C LoRaWAN™ device, meaning it can receive downlink messages at any time, making it suitable for applications requiring low-latency control or frequent data requests.

Device Configuration:

Configuration of the device's activation parameters and settings can be performed via USB using a dedicated "Lora PC" desktop application. This application allows users to:

  • Read the current end-node configuration.
  • Write new end-node configurations.
  • Apply a Modbus configuration from an Excel file.
  • Set the data retrieval interval (Period min), which defines how frequently the device transmits data.

Maintenance Features:

Installation:

Proper installation is crucial for optimal performance. The magnetic antenna should be positioned on a metal body, preferably vertically, and at least 30 cm away from other metal objects to minimize interference and maximize signal strength. The installation location should also have good LoRaWAN™ signal coverage. An SF (Spreading Factor) of 7 is considered optimal, while SF 12 indicates a weak signal, which might affect communication reliability and battery life.

Ordering Information:

The MCF-LW06420 is available in different versions based on the LoRaWAN™ interface region:

  • MCF-LW06420: 4-20mA/0-10V to LoRaWAN interface EU863-870 (for Europe).
  • MCF-LW06420-AS: 4-20mA/0-10V to LoRaWAN interface AS923 (for Asia).

This comprehensive set of features, from robust analog input handling to flexible LoRaWAN™ connectivity and user-friendly configuration, makes the MCF-LW06420 a powerful tool for various industrial and environmental monitoring applications.

mcf88 MCF-LW06420 Specifications

General IconGeneral
Brandmcf88
ModelMCF-LW06420
CategoryTransmitter
LanguageEnglish

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