ENDRESS+HAUSER RMM621-A21AAAAA11 E1000204236 Product Description

Overview

ENDRESS+HAUSER RMM621-A21AAAAA11 E1000204236 is an application manager manufactured by Endress+Hauser, E1000204236 is the unique serial number of this unit. The ENDRESS+HAUSER RMM621-A21AAAAA11 is a DIN rail mounted process arithmetic and logic controller with built-in formula editor, used for multi-channel signal acquisition, mathematical calculation, logic control and data logging. This RMM621 application manager serves as a reliable E+H RMM621 process computing unit, widely used for signal conversion, pump sequencing and auxiliary process calculation in industrial measurement and control systems of the E+H RMM621 process computing unit.

Features

This ENDRESS+HAUSER RMM621-A21AAAAA11 supports 4 channels of analog or pulse input including 4-20mA, PFM and pulse signals for the E+H RMM621 process computing unit. It is equipped with freely configurable formula function to realize custom arithmetic and logic operations. It provides RS232 and RS485 communication ports supporting Modbus protocol for data exchange with PLC and SCADA systems. The unit integrates loop power supply for field transmitters, 2 analog/pulse outputs and one SPST relay output. The ENDRESS+HAUSER RMM621-A21AAAAA11 has a graphic display and local operation keys for on-site parameter setup and data viewing. This model is discontinued by the manufacturer and supplied as spare part for maintenance and retrofit of existing installations of the RMM621 application manager.

Specs

The ENDRESS+HAUSER RMM621-A21AAAAA11 series: RMM621 application manager. Input: 4 channels 0/4-20mA, PFM, pulse. Output: 2 channels 0/4-20mA / pulse, 1 SPST relay. Communication: RS232, RS485 Modbus. Loop power supply: 4 LPS channels. Mounting: DIN rail NS35. Protection rating: IP20. The ENDRESS+HAUSER RMM621-A21AAAAA11 complies with CE and relevant industrial measurement standards as a RMM621 application manager.

Principle

ENDRESS+HAUSER RMM621-A21AAAAA11 E1000204236 collects raw measurement signals from field transmitters. The ENDRESS+HAUSER RMM621-A21AAAAA11 internal processor executes user-defined formulas and logic programs to complete flow compensation, difference calculation, pump control and data recording. The processed results are converted to analog output or relay switch signal, and transmitted via serial bus to upper control system. The built-in loop power supply provides excitation power for connected field instruments. The flexible arithmetic structure of the E+H RMM621 process computing unit realizes customized auxiliary calculation and control without extra PLC programming.

Applications

This ENDRESS+HAUSER RMM621-A21AAAAA11 is widely used in water treatment plants, pump stations, chemical processing and energy metering systems. It is applied for flow signal compensation, multi-parameter calculation, pump sequence control and local data logging. It is used for spare replacement and on-site upgrade of legacy RMM621 control loops. The ENDRESS+HAUSER RMM621-A21AAAAA11 E1000204236 delivers dependable multi-channel signal processing and custom arithmetic control for industrial process measurement as a proven RMM621 application manager.