3-Channel Temperature/mV/Ohm Input Module with RS485
This signal conditioner is a 3-channel temperature/mV/Ohm input module with RS485 communication. It provides isolation between each channel of inputs, power, and network circuits.
Technical Specifications
Overview
High-Precision Remote I/O Module
The M730 is a versatile 3-channel input module designed for temperature, mV, and Ohm signal conditioning. It features robust five-way isolation to eliminate ground loops between power, input, and network circuitry, ensuring reliable performance in industrial environments. With support for standard Modbus RTU protocols and programmable input types via USB, this module offers flexible integration for remote I/O data acquisition systems.
Input Specifications
- Input Channels
- 3 channels
- Supported Input Types
- TC (K/E/S/B/R/J/T/N)RTD (PT100/PT200/PT500/PT1000/Cu50)Resistance (0-400Ω / 0-4000Ω)mV (+80mV)Voltage (0-1V dc)
- Input Impedance
- ≥10MΩ
- A/D Resolution
- 24 bit
Communication
- Communication Protocol
- Modbus RTU
- Baud Rate
- Up to 115.2 kbps
- RS485 Drive Capacity
- 64 nodes
Performance Metrics
Measurement Accuracy
| Input Type | Accuracy |
|---|---|
| TC | ≤ 1°C |
| RTD | ≤ 0.2°C |
| Resistance | ≤ 0.05% F.S. |
| mV | ≤ 10uV |
| Voltage | ≤ 10mV |
- Response Time
- 0.4 s
- Sampling Rate
- 9 times/sec
Electrical & Environmental
Ingress Protection
Casing: IP50Terminal: IP20
- Power Supply
- 24VDC ±10% or AC
- Isolation Voltage
- ≥1500VAC/1min
- Operating Temperature
- -10 to 70°C
