24V DC 2000mW Digital Signal Isolator 8ch RS485 Signal Converter
24V DC 2000mW Digital Signal Isolator 8ch RS485 Signal Converter
Signal Converter 8ch Analog Signal Convert to RS485 Analog Data Acuisition Module
1. General Introduction
The LS-TD4018 is an industrial grade analog acquisition product that supports measure range with -15mV ~+15mV, -50mV~50mV, -100mV~+100mV, -500mV~+500mV, -1V~+1V, -2V~2V, -20mA~20mA and J type, K, T, E, R, S, B, N type TC signal 8 channels input. It adopts standard MODBUS RTU protocol. Complaint with industry standards, LS-TD4018 is suitable to use for a variety of industrial applications and automation systems. It is convenient to communicate with the host computer and realize a rapid networking and build your monitoring system.
| J | -200~1200℃ | R | -50~1760℃ |
| K | -200~1350℃ | S | -50~1760℃ |
| T | -200~400℃ | B | 400~1820℃ |
| E | -200~1000℃ | N | -200~1300℃ |
2. Parameter
| Technique parameter | Description |
| Power supply | 9~30V DC |
| Input ranges | -15mV~+15mV,-50mV~50mV,-100mV~+100mV,-500mV~+500mV, -1V~+1V, -2V~2V, -20mA~20mA and J type, K, T, E, R, S, B, N type TC signal |
| Advantage | Each channel supports independent configuration (8 channels can be set separately) |
| Input type | 8 channels 3-wire input |
| Collect frequency | AD collecting frequency≤10Hz(total rate) |
| Resolution | 16 bit |
| Accuracy class | ≤ ±0.1%(wiring cable errors not included) |
| Input impedance | Voltage 20MΩ, current 100Ω |
| Interface | RS-485 |
| Protocol |
Default Modbus-RTU,support 8N1, 8O1, 8E1. Compatible with kinds of SCADA software, PLC If you need MODBUS-ASCII or other, please specify when placing order |
| Baud rate | 1200bps, 2400bps, 4800bps, 9600bps, 19200bps, 38400bps, 57600bps, 115200bps |
| Distance | RS485 distance<1000m, can use repeater |
| Stability | Use high quality chips inside, built-in dual watchdog, reliable and stable operation |
| Protection level | Power Pin polarity protection, input Pin photoelectric isolation, AD input Pin and communication port ±15KV ESD protection, isolation voltage 2500Vrms, 500DC continuous, lightning protection, surge protection |
| Power consumption | <2000mW |
| Weight | 0.3kg |
| Mounting way | Standard 35mm U-shaped Din rail installation |
3. Default factory settings
For your convenience, our factory default parameters setting is as follows:
a. Device address: 1;
b. The baud rate: 9600bps;
c. ModBus-RTU protocol, data format: 8N1;
4. Pin Definition
| Pin No. | Pin name | Description |
| 1 | IN5+ | Ch 5 analog input + |
| 2 | IN5- | Ch 5 analog input - |
| 3 | IN6+ | Ch 6 analog input + |
| 4 | IN6- | Ch 6 analog input - |
| 5 | IN7+ | Ch 7 analog input + |
| 6 | IN7- | Ch 7 analog input- |
| 7 | DATA+ | RS485 + |
| 8 | DATA- | RS485- |
| 9 | +VS | Power supply + (9-30VDC) |
| 10 | GND | Ground of power supply |
| 11 | IN0+ | Ch 0 analog input + |
| 12 | IN0- | Ch 0 analog input - |
| 13 | IN1+ | Ch 1 analog input + |
| 14 | IN1- | Ch 1 analog input - |
| 15 | IN2+ | Ch 2 analog input + |
| 16 | IN2- | Ch 2 analog input- |
| 17 | IN3+ | Ch 3 analog input + |
| 18 | IN3- | Ch 3 analog input - |
| 19 | IN4+ | Ch 4 analog input + |
| 20 | IN4- | Ch 4 analog input - |
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