Description
ABB 1MRS050644 Analog Input/Output Module
ABB 1MRS050644 Analog Input/Output Module ACS800 Series Inverter Option Module
[Product Positioning]
1MRS050644 is an analog input/output (AI/AO) option module designed by ABB specifically for ACS800 series frequency converters and industrial automation systems. It is an extended I/O component of the ACS800 platform. Model interpretation: 1MRS is the prefix for ABB ACS800 option module series, and 050644 is the specific functional configuration code. This module integrates multiple analog signal acquisition and output into a single compact circuit board, serving as a digital alternative to traditional independent transmitters, independent D/A converters, and hard wired solutions. It is designed for industrial automation scenarios that require precise process monitoring and control.
ABB 1MRS050644 Analog Input/Output Module
[Core Function]
This module simultaneously undertakes tasks such as analog signal acquisition, analog signal output, signal conditioning, and communication conversion. Built in high-precision A/D and D/A converters, supporting two signal formats: current (4-20mA) and voltage (0-10V), which can be flexibly configured. All channels are provided with electrical isolation, which can effectively suppress common mode spike interference of the frequency converter. The module communicates with the main controller through the ACS800 inverter internal bus, without the need for additional programming. Parameters can be directly set in the inverter drive panel or system configuration tool.
[I/O Configuration]
Analog input: 4 single ended or differential analog input channels, supporting 4-20mA current input or 0-10V voltage input. Users can select the signal type and range of each channel through software. Resolution of 16 bits, configurable sampling period, typical conversion time ≤ 1ms.
Analog output: 2 analog output channels, supporting 4-20mA current output or 0-10V voltage output, can be used to control external actuators, regulating valves, remote setting of frequency converters, etc. Resolution 16 bits, output accuracy ± 0.1% FS.
All channels support wire breakage detection function, which automatically triggers a fault alarm when the input signal is lost.
Signal conditioning
The input channel supports software programmable filtering time constants, which can effectively eliminate high-frequency noise in on-site sensor signals. Support offset and gain calibration, zero and full-scale adjustments can be completed without the need for external potentiometers. Input overvoltage protection: The voltage input can withstand ± 30V continuous overvoltage without damage.
[Communication Interface]
The module communicates with the main controller through the ACS800 inverter’s internal DCB (Direct Control Bus) bus, and the data refresh cycle is synchronized with the inverter’s control cycle, with a typical delay of ≤ 2ms. It supports transmitting I/O data transparently to SCADA or DCS systems through the inverter’s upper communication interface (Ethernet RJ45). Supported protocols: Modbus TCP/RTU (via inverter gateway), Profibus DP (via adapter CI854, etc.).
Programming and Configuration
Use ABB Drive Composer or System Builder software for parameter configuration. The range, filtering, and alarm threshold of all channels can be directly set in the software without the need for on-site jumpers or potentiometers. Support remote parameter modification and online diagnosis. The module status (channel fault, communication status, disconnection detection) can be directly viewed on the frequency converter panel HMI.
[Alarm Function]
Each analog input supports upper and lower limit alarms, and the alarm values can be independently set. When an alarm is triggered, the module sends an alarm signal to the main controller through the internal bus of the frequency converter, which can be configured to trip, slow down and stop, or only record. Wire breakage detection: When the input signal is below 3.5mA (current) or 0.5V (voltage) for more than the set time, an automatic wire breakage alarm is triggered.
[Physical Specifications]
Size: Standard ACS800 option module size, suitable for installation inside ACS800 frequency converter control cabinet.
Installation method: Plug in plug-in design, compatible with ACS800 standard backplane bus interface, supports hot plugging (must be operated in power-off state).
Working temperature range: -25 ° C to+70 ° C, storage temperature -40 ° C to+85 ° C.
Auxiliary power supply: Powered by the internal bus of ACS800 frequency converter, no external power supply is required.
Typical power consumption: ≤ 1.5W.
Fanless design, no electrolytic capacitors, normal coating coated board, maintenance free long-term operation.
Certification and Standards
Compliant with IEC 61000 series electromagnetic compatibility standards CE、cULus、UL 508。 Complete KEMA type testing. HS code 853701190. Origin Switzerland.
[Typical Application]
Process control: Collect sensor signals such as temperature, pressure, flow rate, and liquid level as speed settings or PID feedback inputs for ACS800 frequency converters.
Valve control: Output a 4-20mA signal to control the opening of the regulating valve, achieving closed-loop regulation such as constant pressure water supply and constant temperature control.
Remote setting: Multiple frequency converters are cascaded and synchronized through analog output channels.
Data collection: Upload on-site analog signals to the SCADA/DCS system for production monitoring and data recording.
Suitable for applications that require precise analog control, such as water pumps, fans, compressors, conveyors, extruders, etc.
Comparison with the same series
1MRS050644：4AI + 2AO， Standard analog I/O module (this product).
1MRS050664：8AI + 2AO， Expand the number of input channels, suitable for situations with a large number of sensors.
1MRS050674：4AI + 4AO， Expand the number of output channels, suitable for situations that require multi-channel analog control.
1MRS050684: 8AI+4AO, with the richest I/O configuration, suitable for large process control systems.
The electrical interfaces of each module are consistent, the software is compatible, and can be selected as needed.
