Y301-110/200/020 Compact Digital I/O Module
The Y301-110/200/020 series covers the small digital I/O combinations used most often in control cabinets: 1DI+1DO, 2DI, or 2DO.
- Channels
- Y301-110: 1DI+1DO; Y301-200: 2DI; Y301-020: 2DO
- Interfaces
- RS485 2-wire; optional RS232 or TTL; screw terminals/DC jack
- Protocols
- Modbus RTU slave
- Power supply
- 5–36 VDC
Price for the selected configuration.
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Overview
The Y301-110/200/020 series covers the small digital I/O combinations used most often in control cabinets: 1DI+1DO, 2DI, or 2DO. It is a compact Modbus RTU module for simple status collection, relay control, alarm input, pump/valve switching, and OEM equipment expansion.
Typical applications
- Small control boxes that need one or two digital points.
- PLC, gateway, SCADA, or data logger I/O expansion over Modbus RTU.
- OEM equipment where cabinet space and wiring cost matter.
How it works & selection
Model Options
| Y301-110 | 1DI + 1DO for local alarm input and actuator control. |
| Y301-200 | 2DI for switch, contact, and equipment status monitoring. |
| Y301-020 | 2DO relay output for pump, valve, light, or reset-loop control. |
Selection notes
Choose the DI/DO combination first, then confirm RS485 or RS232. If the load current is higher than the relay rating, use the module output to drive an external contactor.
Technical specifications
| Channels | Y301-110: 1DI+1DO; Y301-200: 2DI; Y301-020: 2DO |
|---|---|
| Interfaces | RS485 2-wire; optional RS232 or TTL; screw terminals/DC jack |
| Protocols | Modbus RTU slave |
| Power supply | 5–36 VDC |
Signals and communication
| Product type / topology | Modbus RTU digital I/O module |
|---|---|
| Channels | Y301-110: 1DI+1DO; Y301-200: 2DI; Y301-020: 2DO |
| Interfaces | RS485 2-wire; optional RS232 or TTL; screw terminals/DC jack |
| Protocols | Modbus RTU slave |
| Functions | Pulse counter, debounce, follow/delay/logic/timer/watchdog rules. |
Electrical
| Input signals | Dry/wet contact, opto-isolated; 5–36 V wet-contact mode |
|---|---|
| Power supply | 5–36 VDC |
| Power consumption | 80 mA @ 12 V typical; 120 mA max |
| Relay outputs | SPDT relay; 125 VAC 0.5 A / 30 VDC 2 A |
Mechanical and environment
| Dimensions | 77 × 54 × 32 mm |
|---|---|
| Mounting | 35 mm DIN clip or screw slots |
| Environment | −40 to +85 °C; 5–95% RH, non-condensing; altitude ≤2000 m |
| Protection | IP20; UL94 V-0 flame-retardant housing |
