ABB DSAX110 57120001-PC Replacement for INFI 90 DCS

Product Overview

ABB DSAX110 57120001-PC Replacement for INFI 90 DCS: Smooth Migration from Legacy Analog I/O

The ABB DSAX110 (part number 57120001-PC) is a high-density analog input/output module designed for the ABB INFI 90 Distributed Control System platform. As ABB progressively phases out legacy INFI 90 hardware in favor of the System 800xA architecture, facilities running continuous process operations — including power generation, oil & gas, pulp & paper, and chemical manufacturing — face an urgent need to source verified replacement modules that maintain full backward compatibility with existing field wiring, marshalling cabinets, and control logic.

TOPNLMS stocks the DSAX110 57120001-PC as a direct drop-in replacement, fully tested and ready to ship. Each unit undergoes pre-shipment functional verification to confirm analog channel accuracy, signal conditioning integrity, and backplane communication health before leaving our facility.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful DSAX110 migration rarely involves a single module swap. In practice, engineers replacing this analog I/O module as part of a broader INFI 90 maintenance or partial migration project will also need to address adjacent components in the same rack or control cabinet.

On the controller side, the IMMFP12 multi-function processor or IMCPM02 communication processor module governs how the DSAX110 exchanges data across the Module Bus. If either of these controllers is running outdated firmware or showing intermittent faults, replacing the DSAX110 alone will not resolve system-level instability. Similarly, the IMRACK series rack backplane must be inspected for bus connector wear, particularly in installations exceeding 15 years of continuous operation.

Field signal integrity is another critical factor. When migrating from older DSAI110 dedicated analog input modules or DSAO110 analog output modules to the DSAX110’s mixed-channel architecture, technicians should verify that existing signal isolators and barriers — such as those used with HART-enabled transmitters — remain compatible with the new channel configuration. In many brownfield installations, a DSIT110 or equivalent signal termination module sits between the field junction box and the I/O module; these termination assemblies are typically reusable without modification.

For facilities also upgrading their operator interface layer, the INFI 90 platform historically paired with dedicated operator workstations running the INFI 90 OIS (Operator Interface Station). If the migration scope includes moving toward a modern HMI — such as an ABB 800xA OPC-DA gateway or a third-party SCADA system — the DSAX110 can continue to serve as the field I/O layer while the upper communication architecture is modernized, provided the INFI-NET gateway module (such as the IMASI23 or IMCIS02) is correctly configured.

Power supply redundancy is equally important. The INFI 90 rack relies on the IMPS07 or IMPS10 power supply modules to deliver stable 24 VDC to the backplane. Before installing a replacement DSAX110, confirm that the power supply module is within its rated load capacity, especially if additional I/O modules have been added to the rack since the original system commissioning.

Finally, for sites performing a phased migration from INFI 90 to System 800xA, the DSAX110 can coexist with the new architecture during the transition period through the use of an S800 I/O migration adapter or an INFI 90 to 800xA gateway bridge. This approach minimizes production downtime by allowing the legacy field wiring and I/O modules to remain in service while the control logic is progressively migrated to the new platform.

Retrofit Guidance FAQ

Q: Can I replace the DSAX110 without rewiring the field terminals?
A: Yes. The DSAX110 57120001-PC uses the same terminal block pinout as the original module. No field wiring changes are required for a direct replacement. Verify the channel configuration (AI vs. AO assignment) in the existing control database before powering up.

Q: Is the DSAX110 compatible with INFI-NET communication?
A: Yes. The module communicates natively over the INFI 90 Module Bus and is fully compatible with INFI-NET network controllers including the IMMFP and IMCPM families. No protocol conversion is needed.

Q: What programming changes are required after replacement?
A: In most cases, none. The replacement module inherits the existing module address and channel configuration from the control database. If the original module’s configuration file is intact in the engineering workstation, the system will recognize the replacement DSAX110 automatically after a rack power cycle.

Q: Will the DSAX110 fit in the existing INFI 90 rack without physical modification?
A: Yes. The module occupies a standard INFI 90 single-slot position. No rack modification, adapter plate, or additional mounting hardware is required.

Q: How do I handle the transition if the original module failed mid-process?
A: Power down the affected rack section, remove the failed module, insert the replacement DSAX110, restore power, and perform a channel verification scan from the engineering workstation. Total replacement time is typically under 30 minutes for a trained technician.

Warranty Assurance

Every DSAX110 57120001-PC shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Our pre-shipment testing protocol includes analog channel calibration verification, backplane connector inspection, and functional communication testing on an INFI 90 test rack. Units that do not pass all test criteria are quarantined and not offered for sale.

In the event of a warranty claim, TOPNLMS provides a replacement unit or full refund within the warranty period. Our technical support team is available to assist with installation questions, compatibility verification, and commissioning guidance. We ship globally from Xiamen, China, with standard lead times of 3–7 business days for stocked units. Express shipping options are available for emergency breakdown situations.

For volume procurement, long-term supply agreements, or consignment stock arrangements, please contact our sales team directly.