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Y401-0011-L LoRa Wireless Analog I/O Synchronization Module Datasheet ​

Y401-0011-L
Y401-0011-L product image

Contents ​

  1. Overview
  2. Ordering Information
  3. Key Features
  4. Technical Specifications
  5. Interfaces and Indicators
  6. Mechanical and Environmental
  7. Installation and Wiring
  8. Important Notes
  9. Release Verification

1. Overview ​

The Y401-0011-L is a one-channel point-to-point wireless analog I/O terminal based on LoRa modulation. A standard system uses two factory-paired modules, Device A and Device B. Each module provides one 4-20 mA analog input and one 4-20 mA analog output.

The analog input at one device is transmitted over the wireless link and reproduced as a 4-20 mA analog output at the other device. The same signal path can operate in the reverse direction. The wireless link is half-duplex.

Signal Mapping ​

DirectionSignal path
Device A to Device BDevice A AI -> wireless link -> Device B AO
Device B to Device ADevice B AI -> wireless link -> Device A AO

Typical Applications ​

  • Remote 4-20 mA signal extension
  • Industrial equipment monitoring and control
  • Agricultural and aquaculture monitoring
  • Hydrological monitoring and early warning
  • Transportation and community infrastructure monitoring
  • Remote equipment signal transmission, including rolling-door control

2. Ordering Information ​

Model Naming ​

text
Y401-0011-L
  |      | `-- L: LoRa wireless communication
  |      `---- 0011: 0DI + 0DO + 1AI + 1AO configuration
  `----------- Y401: point-to-point wireless I/O module series

The four-digit I/O code follows the order DI / DO / AI / AO.

Channel Configuration ​

Digital inputDigital outputAnalog inputAnalog output
0011

System Configuration ​

A standard Y401-0011-L wireless link uses two factory-paired modules: Device A and Device B. No on-site configuration is required for normal operation after the modules are connected to power and wired to the field circuits.

3. Key Features ​

  1. One analog channel - 1 x 4-20 mA input and 1 x 4-20 mA output per module
  2. Bidirectional point-to-point transfer - The two paired devices can transfer analog signals in either direction
  3. Long-range communication - Up to 5 km in open area, subject to antenna installation and site conditions
  4. Plug-and-play deployment - Factory paired and ready to use without on-site configuration
  5. Wide supply range - 9 to 36V DC with reverse-polarity protection
  6. Active analog output - 4-20 mA constant-current output for a load of up to 500 ohms
  7. Status indication - LEDs for system operation, link, input current, and output current
  8. Industrial installation - Hardware watchdog, 5.08 mm pluggable terminals, and 35 mm DIN rail mounting
  9. Wireless reliability features - The supplier document states data encryption and automatic retransmission; protocol details are not specified

4. Technical Specifications ​

Wireless ​

ParameterSpecification
ModulationLoRa
Frequency band398 to 525 MHz
Communication rangeUp to 5 km in open area; actual range depends on antenna installation, obstructions, interference, and site conditions
Antenna connectorSMA
Antenna option470 MHz magnetic-mount antenna
Communication modeHalf-duplex

Electrical ​

ParameterSpecification
Supply voltage9 to 36V DC
Max. power consumptionApprox. 1.5W
Analog input1 x 4-20 mA active current input
Input source requirementActive current source with a source voltage of at least 10V
Input current limitImax <= 24 mA
Input acquisition accuracy<= +/- 0.3 mA
Analog output1 x 4-20 mA active constant-current output
Output error<= +/- 0.3 mA
Maximum stated load<= 500 ohms; verify the supply-voltage and load combination before use

Interfaces ​

ParameterSpecification
Field terminals5.08 mm pluggable terminals
Installation35 mm DIN rail

5. Interfaces and Indicators ​

Interface Summary ​

InterfaceDescription
AntennaSMA connector for the LoRa antenna
PowerDC 9 to 36V input; observe the polarity markings on the device
Analog input4-20 mA input; connect an active current signal between the input positive terminal and the input ground/negative terminal
Analog outputActive 4-20 mA constant-current output between the output positive terminal and the output ground/negative terminal
Field terminals5.08 mm pluggable terminals

The supplier diagrams label the negative sides of the analog input and output as ground. Do not assume galvanic isolation between the power, input, and output circuits without a confirmed electrical diagram.

LED Indicators ​

LEDFunctionStatus
WorkSystem operating statusOn after the system starts
LinkWireless link statusOn when the paired device is connected; flashing indicates abnormal communication; off when disconnected
InputAnalog input statusOn when an input current signal is detected
OutputAnalog output statusOn when the module is producing an output current

6. Mechanical and Environmental ​

Mechanical Specifications ​

ParameterSpecification
Dimensions88 x 37 x 59 mm (supplier specification table value)
WeightApprox. 50 g
Mounting35 mm DIN rail

Environmental Specifications ​

ParameterSpecification
Operating temperature-20 to +75 °C
Operating humidity10% to 90% RH, non-condensing

7. Installation and Wiring ​

Power Wiring ​

  1. Use a regulated DC power supply rated from 9 to 36V.
  2. Connect the positive and negative terminals according to the polarity markings on the device.
  3. Confirm the supply voltage before power-up. Low voltage may prevent the device from starting.

Analog Input Wiring ​

The analog input accepts an active 4-20 mA current signal. The external signal source must provide a current-source voltage of at least 10V. The Y401-0011-L input is not specified as a sensor loop power supply.

The three wiring patterns below describe the input side of a Y401-0011-L link. Each module requires DC power within its rated range. The diagrams use a 24V supply for the field transmitter or signal generator and a 9 to 36V supply for the output-side module as examples. The field supply may vary when it meets the transmitter requirements and the analog input source requirement of at least 10V; each module power supply must remain within the 9 to 36V DC rating.

Two-Wire Transmitter ​

Two-wire transmitter wiring

A two-wire current transmitter uses the same two wires for its power supply and 4-20 mA signal loop. Use an external loop supply, such as the 24V example shown in the wiring diagram.

  • Connect the loop supply positive to the transmitter positive terminal.
  • Connect the transmitter current-return terminal to the Y401-0011-L analog input positive terminal.
  • Connect the Y401-0011-L analog input ground/negative terminal to the loop supply negative.
  • Power the receiving Y401-0011-L module within its 9 to 36V DC rating and connect its active analog output to the receiving current input.

Three-Wire Transmitter ​

Three-wire transmitter wiring

A three-wire current transmitter has one positive power wire and two signal wires, with one signal wire shared with the power ground. The supplied example identifies the wires as signal output, DC24V negative, and DC24V positive.

  • Connect the transmitter power positive to the external transmitter supply positive.
  • Connect the transmitter common ground to the external supply negative and the Y401-0011-L analog input ground/negative.
  • Connect the transmitter signal output to the Y401-0011-L analog input positive terminal.
  • Power the receiving Y401-0011-L module within its 9 to 36V DC rating and connect its active analog output to the receiving current input.

Four-Wire Transmitter or Signal Generator ​

Four-wire signal generator and indicator wiring

A four-wire current device uses two power wires and two separate signal wires. The supplied example labels the instrument terminals as OUT for signal positive, G for signal negative, V+ for power positive, and G for power negative.

  • Connect the instrument power positive and power negative to the external instrument supply.
  • Connect the instrument signal positive to the Y401-0011-L analog input positive terminal.
  • Connect the instrument signal negative to the Y401-0011-L analog input ground/negative terminal.
  • Power the receiving Y401-0011-L module within its 9 to 36V DC rating and connect its active analog output to the receiving current input.

For all three arrangements:

  • Follow the field instrument's terminal labels and polarity markings. Wire colors in an example diagram are not a universal terminal standard.
  • Use an active current source. The analog input does not provide transmitter excitation unless the final electrical design explicitly confirms it.
  • Connect the input signal positive and negative terminals only as shown by the instrument's wiring requirements.

Current input only

Do not connect a voltage signal or an external voltage source directly to the analog input. Confirm the transmitter wiring and polarity before applying power.

Analog Output Wiring ​

The analog output is an active 4-20 mA constant-current source. Connect it to a compatible passive analog input or current receiver. Keep the receiving load at or below 500 ohms, subject to the available supply voltage and the actual output compliance requirement.

The three-wire example shows a current meter with a 150 ohm series resistor. The two-wire example uses a multimeter in DC current mode; the four-wire example uses a separately powered current indicator. Use the resistor value required by the receiving instrument and include it in the total loop load; 150 ohms is an example, not a universal requirement.

Module terminal positions in these diagrams are schematic; use the markings on the actual device.

Do not connect the active output directly to another active current source or treat it as a voltage output.

Wireless Installation ​

  1. Install the antenna vertically in an open area, about 2 m above ground when possible.
  2. Keep the antenna away from large metal structures and do not install it inside a metal cabinet.
  3. Tighten the SMA connector securely.
  4. Mount the module on a stable 35 mm DIN rail.
  5. Keep the module away from direct sunlight, heat sources, liquids, heavy dust, smoke, and strong sources of radio interference.

8. Important Notes ​

  1. Half-duplex communication - The wireless link is not a simultaneous full-duplex connection. It is not intended for applications that require high real-time performance, especially in complex radio environments.
  2. Range planning - The 5 km value is an open-area reference. Confirm the antenna, mounting height, obstructions, interference, and site conditions before committing to a range.
  3. Analog accuracy - The stated +/- 0.3 mA input accuracy and output error are supplier limits. Confirm the required accuracy before using the module for measurement or closed-loop control.
  4. Output load - A 20 mA current through a 500 ohm load requires 10V across the load before wiring and device headroom are considered. Confirm the supply-voltage and load combination, especially when operating near the 9V lower supply limit.
  5. Signal failure behavior - The supplier document does not specify the analog output behavior after a wireless link loss. Confirm whether the output holds the last value, falls to a defined value, or enters another fault state.
  6. Safety boundary - Do not use the wireless link as the sole path for emergency-stop, personnel-safety, or other safety functions.
  7. Installation environment - Do not install the device in explosive, wet, dusty, smoky, or strongly interference-prone environments. Use a proper power adapter and do not disassemble the device.

9. Release Verification ​

This specification is based on the Y401 family document format and the supplier's LM101 manual, version V1.0.1, dated May 15, 2024. Confirm the following before public release:

  • Final mechanical dimensions. The supplier specification table lists 88 x 37 x 59 mm, while the mechanical drawing labels 111.2 x 58.7 x 36.5 mm.
  • Final commercial unit and package contents, including whether the order contains a matched pair and which antenna or mounting accessories are included.
  • Exact terminal numbering and the complete electrical isolation diagram.
  • Analog output behavior after link loss, communication timing, update interval, and retransmission behavior.
  • The supply-voltage and output-load curve for the stated 500 ohm maximum load.
  • The supplier section describing the output wiring refers to two analog signals, while the product code and the remaining specifications define one analog input and one analog output. This document uses the one-channel definition: 0DI + 0DO + 1AI + 1AO.
  • Manufacturer: Hunan YenGear Tech Co., Ltd.
  • Address: Room 21014, Building 1, Fudi Xingguang Tiandi, Yingxin Road, Yuhua District, Changsha, Hunan, China
  • Email: [email protected]
  • Website: www.yengear.com