ABB 81EU01-E/R3210 Analog Signal Input Module

ABB 81EU01-E/R3210 Analog Signal Input Module

Module Overview

ABB 81EU01-E/R3210 is a 5-channel analog signal input module suitable for PROCOLOR systems, capable of processing 0/4-20mA signals and replacing various models of modules in the 81EA01 series. It adopts a compact design and supports multiple transmitter types, including 2-wire system (4-20mA, module power supply), 4-wire system (0/4-20mA, module power supply or external power supply), and can flexibly set parameters through a configuration list. Data is stored in EEPROM to prevent power loss.

Core functions

Signal processing and conversion: The current signal is converted into voltage through a high-precision measurement resistor of 50 Ω. It is then digitized by a multiplexer, instrument amplifier, and 12 bit A/D converter, supporting 12 bit precision output with quantization error<0.02% and linearity error<0.1%.

Correction and filtering calculation: Built in functional blocks such as KOR1 (water/steam flow correction), KOR3 (variable pressure gas flow correction), NIV (liquid level correction), FIL (nonlinear filtering), etc. Each functional unit can be equipped with one functional block, and the correction value is sent via telegram. The uncorrected original value can also be output.

Limit signal and event generation: Each functional unit can set up to 4 limit values, with four lag values available: HY1 (0.39%), HY2 (1.56% default), HY3 (3.12%), and HY4 (6.25%). If the limit is exceeded, it will be immediately notified by telegram. In event mode, data is transmitted when the limit response, monitoring trigger, or simulated value change exceeds the threshold (0.2% -6.8%, default 1.56%) and the time exceeds the set (40/200ms, default 200ms).

Simulation and diagnostic function: It can simulate up to 32 signals (including sending/receiving registers), with self diagnostic function. It displays faults through ST lights, diagnostic registers (246), and CDS system, such as process channel faults (unreasonable signals, reference value interference, etc.), and handles faults (invalid configurations, abnormal voltage, etc.).

Technical parameters

Electrical parameters

Power supply: UD is 4.9-5.1V (typical 5V, power consumption 220mA), US is 19.5-30V (typical 24V, power consumption varies with configuration, 2-wire transmitter with 140mA+7mA+measurement current per channel).

Input range: nominal 0-20mA/4-20mA, maximum -1-30mA, measured resistance 50 Ω, line resistance ≤ 100 Ω, line length ≤ 1000m.

Accuracy:<0.3% at 0-70 ℃,<0.1% at 23 ℃ delivery, temperature sensitivity<50ppm/K (typical 30ppm/K).

Physical parameters

Size: 6 units, 160mm deep, compliant with DIN 41612 interface, weight approximately 0.6kg.

Protection and anti-interference: electrostatic discharge immunity 8kV/4kV, RF field 10V/m, electrical fast transient 2kV, surge 2kV/1kV, conducted interference 10V.

Application and Configuration

Application scenario: Suitable for the acquisition and processing of analog signals such as flow and liquid level in industrial automation systems, supporting PROCONTOL station bus communication, and can be integrated with PLC and other systems.

Configuration method: Load the configuration list through PDDS, including transmitter type, measurement range, limits, function block type (1-5, KOR1/KOR3/NIV/FIL), filtering frequency (16 2/3/50/60Hz, default 50Hz), etc. After configuration, the ST light will turn off and the module will participate in bus communication.

Connection and Mechanical Design

Interface: X11 is a 48 pin station bus interface, X21 is a 32 pin process interface, supporting 2-wire/4-wire (module power supply/external power supply) connections. Please note that the reference potential difference should be ≤ 0.5V, and parallel USn output is not allowed.

Mechanical specifications: Board size 6 units, 160mm deep, connectors comply with DIN 41612, weight approximately 0.6kg.