Y301-110/200/020 I/O Module Specification

Y301-110	Y301-200	Y301-020

• Y301-110/200/020 Technical Manual

Contents

1. Overview
2. Ordering Information
3. Key Features
4. Technical Specifications
5. Interfaces and Pinout
6. Mechanical and Environmental
7. Automation Rules

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1. Overview

The Y301-110/200/020 series includes ultra-compact serial I/O modules for industrial automation, remote monitoring, and IoT edge deployments. Each model combines opto-isolated digital inputs and relay outputs, with Modbus RTU over RS485 by default and optional RS232/TTL variants for easy integration with PLCs, SCADA systems, and cloud-connected data loggers.

Model	Digital Input (DI)	Digital Output (DO)	Typical Use Case
Y301-110	1	1	Local alarm input and actuator control
Y301-200	2	0	Dual-channel status monitoring
Y301-020	0	2	Dual relay control for pumps or valves

Product Highlights

• Compact DIN-rail or panel-mount form factor for dense control cabinets
• Industrial 5-36 VDC input with reverse-polarity protection
• Well suited for edge gateways, OEM equipment, and smart building nodes that need modular I/O expansion

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2. Ordering Information

2.1 Model Naming

Y301-XYZ

• XYZ: function combination (110 = 1DI + 1DO + 0AI, 200 = 2DI + 0DO + 0AI, 020 = 0DI + 2DO + 0AI)

2.2 Interface Options

All models are available with the following serial interfaces:

Interface	Description
RS485	Standard version for Modbus RTU multi-drop networks
RS232	Optional version for point-to-point communication
TTL	Optional on selected models for direct MCU integration

2.3 Ordering Table

SKU	Description
Y301-110	1 DI + 1 DO, Modbus RTU
Y301-200	2 DI, input-only module
Y301-020	2 DO, output-only module

2.4 Package Contents

Module, digital quick reference guide, and warranty card. Optional accessories include a DIN clip, USB-to-RS485 converter, 12/24 VDC power supply, and shielded RS485 wiring kit.

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3. Key Features

1. Ultra-compact design - 77 mm class enclosure for space-constrained installations
2. Flexible configuration - Three model variants cover common digital I/O requirements
3. Modbus RTU ready - RS485/RS232/TTL interface options simplify system integration
4. Industrial reliability - 5-36 VDC input and -40 to +85 C operating range
5. Opto-isolated inputs - Supports both dry contact and wet contact signals
6. High-power relay outputs - Rated up to 277 VAC / 10 A or 28 VDC / 10 A
7. Built-in automation - Supports local logic rules and output retention
8. DIP addressing - 5-bit DIP switch supports multi-device deployments

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4. Technical Specifications

4.1 Electrical and Environmental

Parameter	Specification
Supply voltage	5-36 VDC
Typical current	80 mA @ 12 V (all DO off)
Maximum current	120 mA @ 12 V (all DO on)
Operating temperature	-40 to +85 C
Humidity	5-95% RH, non-condensing
Altitude	<= 2000 m

4.2 Digital Input

Item	Specification
Channel count	1 (Y301-110) or 2 (Y301-200)
Type	Dry/wet contact, opto-isolated
Voltage range	5-36 V (wet contact mode)
Input current	<5 mA per channel
Sampling rate	100 Hz
Pulse counter	32-bit, selectable rising/falling edge
Debounce	5-255 ms (default 50 ms)

4.3 Digital Output

Item	Specification
Channel count	1 (Y301-110) or 2 (Y301-020)
Type	SPDT relay
Contact rating	277 VAC 10 A / 28 VDC 10 A
Minimum load	10 VAC 10 mA
Switching time	<10 ms operate / <5 ms release
Electrical life	100k cycles at rated load
Output retention	None / soft reboot / full retention

4.4 Communication

Item	Specification
Interface	RS485 (2-wire), optional RS232 or TTL
Protocol	Modbus RTU slave
Baud rate	600-230400 bps (default 9600)
Slave address	1-255 (software) + DIP offset 0-31

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5. Interfaces and Pinout

5.1 Terminal Overview

Group	Y301-110	Y301-200	Y301-020
Power	V+, V- screw terminals + DC 5.5 x 2.1 mm jack	V+, V- screw terminals + DC 5.5 x 2.1 mm jack	V+, V- screw terminals + DC 5.5 x 2.1 mm jack
DIP switch	SW1-SW5 (binary address offset)	SW1-SW5 (binary address offset)	SW1-SW5 (binary address offset)
Reload	Hold 3-15 s to restore factory defaults	Hold 3-15 s to restore factory defaults	Hold 3-15 s to restore factory defaults
DI	COM+, COM-, DI1	COM+, COM-, DI1-DI2	None
DO	NC1 / COM1 / NO1	None	NC1/NC2 / COM1/COM2 / NO1/NO2
Communication	A/B/GND (RS485) or TX/RX/GND (RS232/TTL)	A/B/GND (RS485) or TX/RX/GND (RS232/TTL)	A/B/GND (RS485) or TX/RX/GND (RS232/TTL)

5.2 Wiring Guidelines

• Use 20-16 AWG power wiring with a 1 A upstream fuse.
• For dry-contact DI, bridge COM+ to the target DI through the external contact.
• For wet-contact DI, connect the external 5-36 V reference to COM-.
• For relay outputs driving inductive loads, add an RC snubber for AC loads or a flyback diode for DC loads.
• For RS485, use shielded twisted pair, terminate both ends with 120 ohm resistors, and keep a common reference ground.

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6. Mechanical and Environmental

Item	Value
Dimensions	77 x 54 x 32 mm
Mounting	35 mm DIN clip or screw slots
Protection	IP20
Housing	UL94 V-0 flame-retardant plastic

Keep at least 15 mm clearance above and below, 10 mm on each side, and 40 mm in front for wiring and airflow.

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7. Automation Rules

Mode	Description
DI follow	DO mirrors the DI state
Pulse output	Configurable ON/OFF pulse width
Delay control	Programmable ON/OFF delay
Cyclic toggle	Periodic ON/OFF cycling
Timer/schedule	Time-based activation
Logic mode	AND/OR logic combination
Watchdog mode	Automatically resets the DO when the DI timeout condition occurs

• Up to 2 rules total, with 1 rule per DO channel
• Rules run locally without host polling
• When enabled, output retention stores the last automation state

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• Manufacturer: Hunan YenGear Tech Co., Ltd.
• Address: Room 21014, Building 1, Fudi Xingguang Tiandi, Yingxin Road, Yuhua District, Changsha, Hunan, China
• Email: hi@yengear.com
• Website: www.yengear.com