Condition:New
Type:Logic ICs
Model Number:MB4TC
Operating Temperature:W
Supply Voltage:W
Dissipation Power:W
No.:TC MB4AI+
Decoration and construction content:Hydropower project
MB4TC 4 thermocouple high precision acquisition module, can be collected 8 kinds of thermocouple(J/K/T/E/R/S/B/N)Default K type, the acquisition of high precision temperature. 4 channels can be collected with the same type of thermocouple, can also be different for each channel type thermocouple; analog signal collected data, by isolating the RS485 interface output; module adopts Modbus-RTU communication, can be adapted to PLC, DCS and a variety of configuration software.
The first chapter product introduction
A.Summary
MB4TC 4Thermocouple high precision acquisition module, can be collected 8 kinds of thermocouple (J/K/T/E/R/S/B/N), the acquisition of high precision temperature.4A channel can collect the same type of input, and each channel can be different input typesThe analog signal data collected by the isolated RS485 interface output module uses Modbus-RTU communication, can be adapted to DCS, PLC, and a variety of configuration software, etc..
Signal acquisition, CPU and power input, RS485 communication electrical signal isolation, the effective suppression of all kinds of serial mode and common mode interference, to ensure the accuracy of the data, but also to ensure the reliability of the module.
Two.Characteristic
1.Using standard Modbus-RTU protocol.
2.According to their own needs to set the input signal type channel.
ThreeHigh precision signal acquisition: using high precision 24 bit AD and voltage reference, voltage reference temperature coefficient 10PPM/ C (max).
4.Independent high precision cold end compensation, accuracy of 0.Five
FiveSecurity: signal acquisition, signal output, power supply, RS485 communication electrical signals isolated from each other.
SixCommunication protection: RS485 communication signal output interface using overvoltage and over current dual protection.
7.Input signal type, communication format can be set through the software.
8.Power polarity protection.
Three.Technical index
project | parameter |
AI Signal input | 1Input channel: 4 channel isolated analog acquisition 2Input signal type: 8 kinds of thermocouple ((J/K/T/E/R/S/B/N) ThreeSampling rate: 4 channels per 200mS acquisition again 4Resolution: 24positionAD 5.Signal acquisition circuit and CPU isolation voltage protection: 1500V |
DIAnd DO | 1.4Dry contact input optocoupler Commons 2.4The way open collector output optocoupler Commons |
RS485 Communication output | 1Communication protocol: MODBUS-RTU 2Interface type: isolated RS485 communication, the output of the interface using the overvoltage and overcurrent protection 3Baud rate: 1200BPS, 2400bps., 4800bps, 9600bps, 19200bps 38400bps57600bps, 115200bps. 4Check bit: no parity check, parity check 5. setting: module address, baud rate, parity bits can be set by software 6 RS485Circuit and CPU isolation voltage protection: 1500V |
Module size | A.Separate module size: 104mm*72mm*26mm B.With terminal and guide rail box size: 124mm*72mm*45mm |
Installation method | Standard DIN guide rail installation (35mm guide rail or high and low track) |
work environment | Temperature: -10 ~ +55 temperature humidity: 35~85% (not dew) |
Working power supply | 1Power supply voltage: 10V~30V wide range of power supply, with the power supply polarity protection 2Power consumption: less than 3W |
Four.measurement accuracy
Input type | measuring range | Display resolution | accuracy |
Thermocouple | J(-200-1200 degrees C) | 0.1C | + 0.4 |
K(-200-1370 degrees C) |
T(-200-400 degrees C) |
E(-200-950 degrees C) |
R(-20-1750 degrees C) | + 0.6 |
S(-20-1750 degrees C) |
B(600-1800 degrees C) |
N(-250-1300 degrees C) | + 0.4 |
Cold end compensation | -20 - 85 | 0.1C | Cold end compensation: + 0.5 |
Five.Product appearance and external wiring diagram
Six.Module indicator lamp and switch function specification
1.POW/SET;Module working status indication
A.Green light: the module works in the running state. B. red light: the module has the configuration parameters have been written, need to re power up.
2.TXD/RXD:Communication status indication
A.The green light flashes: the communication receives the data B. red light flashes: the module is sending data
C.The green light is always on: DATA+ and DATA- on the communication line RS485 line is connected to the reverse or the connection is broken.
ThreeModule right reset switch
A.When the communication parameters (module address, baud rate, parity bit) do not know or communication parameter misspecification, and can not establish contact module communication, the solution is to reset the communication parameters; we use the clip to hold the reset switch is not open, 5 seconds after the [POW/SET] module of the red indicator lights, release the reset switch, the communication the parameters have been reset, as long as the power supply module after the restart time, the communication parameters of the module has been reset.
B.Communication parameters after reset: Address: 1, baud rate: 9600bps, parity: No.
Seven.Typical application wiring diagram
Eight.Terminal definition
terminal | Name | Explain |
| terminal | Name | Explain |
1 | DI0 | Switch input 0 | 26 | NC | empty |
2 | AIGND | Switch input 1 | 25 | C3 | empty |
3 | IN1+ | Switch input 2 | 24 | AI3- | Thermocouple input channel 3 negative terminal |
4 | IN2+ | Switch input 3 | 23 | AI3+ | Thermocouple input channel 3 |
5 | DCOM | Open in public | 22 | C2 | empty |
6 | DO0 | Switch output 0 | 21 | AI2- | Thermocouple Input Channel 2 negative terminal |
7 | DO1 | Switch output 1 | 20 | AI2+ | Thermocouple Input Channel 2 |
8 | DO2 | Switch output 2 | 19 | C1 | empty |
9 | DO3 | Switch output 3 | 18 | AI1- | Thermocouple input channel 1 negative terminal |
10 | DATA+ | A RS485Communication + | 17 |
