ABB Bailey IMRMD01 | Measurement Display Module

The ABB Bailey IMRMD01 shows real-time process values on a dedicated local display. This remote measurement module connects to INFI 90 I/O racks via a simple serial link. You can mount it up to 200 meters away from the main control cabinet. It displays temperature, pressure, flow, and level readings from field sensors. Consequently, operators can view critical data without accessing the central DCS console.

Technical Specifications Overview

Parameter	Detailed Specification
Model	ABB Bailey IMRMD01
Category	INFI 90 Remote Measurement Display Module
Display Type	LCD, alphanumeric (2 lines x 20 characters)
Display Backlight	LED (green, adjustable brightness)
Measurement Update Rate	1 second (typical)
Number of Display Channels	8 (user-selectable via front buttons)
Display Resolution	0.1% of full scale (for 4-20 mA inputs)
Communication Interface	RS-485 (2-wire, half-duplex)
Communication Distance	Up to 200 meters (shielded twisted pair)
Input Signal Type	4-20 mA (external loop-powered)
Number of Analog Inputs	8 (differential, non-isolated)
Input Impedance	250 Ω (precision resistor)
Accuracy	±0.2% of reading at 25°C
Operating Voltage	24V DC (20.4V to 28.8V)
Power Consumption	120 mA (typical)
Dimensions (approx.)	144 mm x 72 mm x 45 mm
Weight	0.32 kg (320 grams)
Enclosure Rating	IP65 (front) / IP20 (rear)
Operating Temperature	-10°C to 55°C

Functional Features and Display Capabilities

The ABB Bailey IMRMD01 accepts direct 4-20 mA signals from field transmitters. You can scroll through eight measurement channels using the front membrane buttons. The backlit LCD shows engineering units like °C, PSI, or GPM. Furthermore, the module includes programmable alarm thresholds for each channel.

This remote display requires no configuration software for basic operation. You set the alarm points and channel labels using onboard DIP switches. The RS-485 port allows daisy-chaining multiple displays on the same cable. Additionally, the module retains all settings in non-volatile EEPROM memory.

Installation and Configuration Steps

First, mount the ABB Bailey IMRMD01 in a panel cutout of 138 mm x 68 mm. Next, connect the 24V DC power supply to the rear terminal block. Then, wire your 4-20 mA transmitters to the eight input channels. Finally, set the channel labels and alarm thresholds using the DIP switches.

You must use shielded twisted-pair cable for the RS-485 link. The module does not provide loop power for two-wire transmitters. Therefore, you need an external 24V supply for each sensor loop. Always calibrate the display against a known reference before commissioning.

This remote measurement display works perfectly for local equipment monitoring. It suits pump stations, tank farms, and compressor skids without a DCS terminal. The ABB Bailey IMRMD01 also serves as a backup indicator during system maintenance. You can mount it directly on machine panels for operator convenience.