ABB IMDSM05 Bailey INFI 90 Digital I/O Slave Module

Description

The ABB IMDSM05 Digital I/O Slave Module is a digital input/output interface for process field signals within the INFI 90 Process Management System. It brings up to 16 digital signals into master modules—such as the Multi-Function Processor (MFP), Multi-Function Controller (MFC), or Logic Master Module (LMM)—for monitoring, and transmits digital control signals to process field control devices like relays, lamps, contacts, switches, or solenoids. The module also handles signal transfers between master modules and Digital Logic Stations (NDLS02).

The module consists of a single printed circuit board occupying one slot in a Module Mounting Unit (MMU). It contains 16 I/O circuits divided into two independent groups of eight (Group A and Group B). Twelve I/O circuits are individually isolated from each other, while the remaining two pairs share positive common input lines.

Features

• Interfaces up to 16 digital I/O field signals (24 VDC) to INFI 90 master modules over the slave expander bus.
• Two independent, identical 8-point I/O groups (Group A and Group B) configurable for input or output operation.
• Individual module jumpers configurable for non-isolated operation with read-back capabilities or two-wire isolated output operation.
• Front panel LED status indicators for visual indication of digital input/output states and module status.
• Built-in default value settings for output groups during loss of communication with the master module.
• semi-custom gate array universal slave expander bus interface for address detection, function code decoding, and signal filtering.

Applications

• Interfacing digital field switches, contacts, relays, and solenoids to DCS master controllers.
• Process control monitoring and discrete digital actuation in INFI 90 systems.
• Interfacing INFI 90 master processors with Digital Logic Stations (NDLS02).

Technical Specifications

Connections/Interfaces

Installation Guidelines

• Use grounded static dissipative wrist straps and anti-static procedures when handling the module to protect electrostatic sensitive devices.
• Configure the 8-position slave address dipswitch (S1) to match the address defined in Function Code 84 Specification 1 before inserting the module.
• Set master selection jumpers J17 and J18 to positions 1-2 for LMM01 operation, or positions 2-3 for MFP, MFC, or LMM02 operation.
• Set digital I/O jumpers J1 to J16 to positions 1-2 for inputs or normal outputs, or positions 2-3 for two-wire isolated output operation.
• Verify that a dipshunt is installed in the slave expander bus socket on the MMU backplane between the slave and master modules.
• Disconnect power before installing dipshunts for slave modules on the MMU backplane.
• Slide the module along the plastic guide rails of the MMU until the front panel is flush with the frame, then tighten the two captive retaining screws.

Compliance and Certifications

• CSA Certified for use as process control equipment in an ordinary (non-hazardous) location.