8 Digital Relay Output Module with Modbus RTU
MPN: AT-14033
Features and Benefits
- 8ch digital input/8ch digital relay output
- Protocols: Modbus RTU
- Compact DIN-rail mountable design
- RS-485 Data Direction Control ADDC
Certifications
- Overview
- Specifications
AT-14033 – 8-Channel Digital Relay Output Module with Modbus RTU
The AT-14033 is a robust 8-channel relay output module designed for seamless control and automation in Modbus RTU-based systems. Each relay channel supports SPDT (Form A) configuration with contact ratings of 5A @ 250 VAC/30 VDC, providing reliable switching for a wide range of loads.
With 1500 VDC isolation and galvanic isolation up to 2.5 kV, the module ensures stable operation and protection in demanding industrial environments. It supports RS-485 Modbus RTU communication with Automatic Data Direction Control (ADDC) for efficient data exchange and includes watchdog protection for enhanced system reliability.
Built in a rugged mild steel DIN-rail mountable enclosure, the AT-14033 is ideal for applications requiring dependable relay control and long operational life.
Communications
| Interface | RS-485 |
|---|
General
| Connectors | 2 x plug-in terminal block (#14~22 AWG) |
|---|---|
| Protocol | Modbus/RTU |
Digital Output
| Number of outputs | 8 |
|---|---|
| Relay type | 1 form A(SPDT) |
| Contact Material | AgSnO2, AgNi |
| Contact Rating | 5A 250VAC/30VDC |
| Isolation voltage | 1500 VDC |
| Mechanical Life Expectancy | 2 x 10^7 operations |
| Electrical Life Expectancy | 5 x 10^4 operations |
Environment
| Galvanic Isolation | 2.5 kV |
|---|---|
| Operating Temperature | 0°C - 60°C |
Power Requirements
| Input Voltage | 9 – 36 VDC |
|---|
Standards and Certifications
| RoHS |
|---|
Resources Content
Model Content
Specifications
General Information
Electrical Specifications
Structure
Environmental Specification
| Country of Origin | India |
| RFID Frequency | 125 KHz |
| Installation | Plug-and-Play |
| Weight | 150g |
| Reading Distance | 1mm to 40mm |
| Communication Interface | USB |
| USB Class | HID |
| Port 2 | RS-485 : D+, D-, GND |
| Output Format | ASCII (Decimal Tag Number) |
| Card / Tag Supported | EM-4100 Tags, Passive Tags |
| Compatible with | Windows, Linux, Android, MAC |
| Antenna | Built-in |
| Relative Humidity | 5% – 85% |
| Storage Temperature | -5°C to 80°C |
| Operating Temperature | 0°C to 65°C |
| Operating Voltage | 5V @50mA (not required external supply) |
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