ABB Bailey IMRDI01 Digital Input

This digital input module monitors discrete field signals for ABB Bailey INFI 90 systems. You will find the ABB Bailey IMRDI01 Digital Input Module reading limit switches, push buttons, and proximity sensors. Its compact single-wide design fits efficiently into crowded equipment racks.

Technical Specifications

This module contains sixteen digital input channels with common return. You can also locate one LED bar for visual channel status indication. The ABB Bailey IMRDI01 Digital Input Module stores no battery energy for configuration retention. Instead, it uses optical isolation for all field-to-logic separation. Therefore, this module never requires any routine battery replacement.

Parameter	Specification
Full Product Name	ABB Bailey IMRDI01 Digital Input Module
Series	INFI 90 / Bailey
Product Type	Digital Input Module
Weight	0.48 kg
Length	25.5 cm
Width	3.2 cm (single-wide)
Digital Inputs	16
Input Type	24 VDC sink/source
Input Voltage Range	10-30 VDC
Input Current	7 mA typical
Isolation	Optical (1500 VDC)
Response Time	5 ms
Status Indication	LED bar (16 channels)
Bus Connector	1 x 24-pin
Energy Storage	Optocouplers only

Signal Conditioning Details

The ABB Bailey IMRDI01 Digital Input Module draws its operating power from the INFI 90 bus backplane. You can connect both sinking and sourcing field devices to any input channel. The module filters each input with a 5 ms debounce time to prevent false triggering. Moreover, the optical isolation protects the backplane from field wiring transients. This design ensures reliable logic readings even in electrically noisy environments.

Mechanical Integration and Mounting

You must insert the ABB Bailey IMRDI01 Digital Input Module carefully into any standard INFI 90 slot. After full insertion, secure the module using the top and bottom metal retaining clips. The module measures exactly 25.5 centimeters in length and 3.2 centimeters in width. Its total weight reaches approximately 0.48 kilograms for straightforward handling. Furthermore, the LED bar shows the real-time status of all sixteen inputs at a glance.

Environmental and Storage Guidelines

You should store this ABB Bailey IMRDI01 Digital Input Module in an anti-static bag away from moisture. The module operates reliably between 0°C and +60°C ambient temperature. Likewise, keep the unit away from conductive dust or corrosive atmospheres. Because the module uses solid-state components only, it requires zero regular maintenance over its service life.