Product Introduction
ADM-4760 is 6-Channels Pt100/Pt1000 thermal resistance temperature acquisition module. The communication interface adopts RS-485 interface, supports standard MODBUS-RTU protocol, and can be directly connected with configuration software, PLC, DCS, industrial control touch screen, etc.
Functional Features
1. 6-Channels Pt100/Pt1000 thermal resistance input
2. Each channel can be independently set as Pt100 or Pt1000
3. Automatic line resistance compensation of 3-wire sensor
4. 16bit ADC chip is adopted, and low-speed mode or high-speed mode can be selected
5. Low-speed mode ±0.5 precision,High-speed mode ±1 precision
6. Internal software watchdog to ensure stable operation of the module
7. Modbus RTU protocol, photoelectric isolation RS-485 interface output
8. RS-485 and Power interface are protected by TVS+PTC
9. tool software is used to set module parameters and acquisition and record module data
10. DC9~30V power supply, low power consumption, less than 1W at 24V power supply
11. 35mm DIN rail installation, industrial design
Technical Specifications
Analog input
Input Channel
ADM-4760: 6-Channels
Input Type
Pt100 / Pt1000 thermal resistance
Input Range
Pt100: -200~+650, Pt1000: -150~+550
Convert Rate(Note 1)
Low speed mode: 1 times/s , high speed mode: 10 times/s
Resolution
16bit ADC
Acquisition precision
Low speed mode ±0.5, High speed mode ±1
Compensation
Automatic line resistance compensation
Convert Rate setting
Low speed mode or high speed mode can be set
Signal type setting
Each channel can be independently set as Pt100 or Pt1000
RS-485Communication interface
Baud Rate
1200 ~ 115200bps
Parity
None, Odd, Even
Protocol
Modbus-RTU
System parameter
Watchdog
Internal software watchdog
Power supply
DC9~30V, with power reverse connection protection
Power dissipation
Less than 1W @ 24VDC
Working temperature
-10~ +60
Storage temperature
-40~ +85
Model: ADM-4760
Symbol
Function definition
Symbol
Function definition
RTS0+
RTD Sensor 0 Positive
VS+
DC9-30V Input Positive
RTS0-
RTD Sensor 0 Negative
VS-
DC9-30V Input Negative
AGND
RTD Sensor Common
RS-485+
RS-485 Interface + (A)
RTS1+
RTD Sensor 1 Positive
RS-485-
RS-485 Interface - (B)
RTS1-
RTD Sensor 1 Negative
INIT
Use default parameters
RTS2+
RTD Sensor 2 Positive
RTS5-
RTD Sensor 5 Negative
RTS2-
RTD Sensor 2 Negative
RTS5+
RTD Sensor 5 Positive
AGND
RTD Sensor Common
AGND
RTD Sensor Common
RTS3+
RTD Sensor 3 Positive
RTS4-
RTD Sensor 4 Negative
RTS3-
RTD Sensor 3 Negative
RTS4+
RTD Sensor 4 Positive
Origin : Mainland China
Certification : CE