Description

Key Technical Specifications

Parameter	Specification
Product Type	Infi-Net to Computer Transfer Module
System Compatibility	ABB Bailey INFI 90 / NET 90 DCS
Host Interface	RS-232-C serial (EIA-232), configurable baud/parity/handshaking
System Bus Connection	INFI 90 module bus / I/O expansion bus
Data Rate	Up to 19.2 kbps serial, configuration-dependent
Supply Voltage	+5 V DC from INFI 90 backplane
Configuration	DIP switches for serial and operating parameters
Diagnostics	Front-panel status LEDs
Mounting	Standard INFI 90 single-width slot
Operating Temperature	Approximately -20°C to +60°C, verify with OEM datasheet
Supply Status	Obsolete — surplus/tested stock only

Product Introduction

If you are keeping an INFI 90 system alive, the INICT01 is one of those modules you do not notice until the historian stops talking to the plant floor. I have seen it in power, chemical, and pulp-and-paper cabinets where the control side still runs fine, but the host link dies because the serial card went quiet. That is where this module lives: between the INFI 90 module bus and whatever PC, historian, or engineering station is still trying to pull data.It is not a controller. It is not an I/O card. It is a serial gateway that lets a host computer read process data, alarms, and status from the INFI 90 system, and in many configurations push configuration or supervisory commands back down. The RS-232 interface is slow by modern standards, but that is exactly why it still works on legacy systems that were never designed for Ethernet. Just do not assume every INICT01 revision behaves identically. Some boards are very particular about DIP switch settings and serial parameters. Get those wrong and the link looks alive while the data is garbage.

Quality SOP & Tech Pitfalls

The Lab Report (SOP)

Visual inspection for counterfeit signs, burnt components, bent pins, and corrosion.
Check DIP switch positions and compare with customer photos.
Power the module in a compatible INFI 90 rack and verify backplane recognition.
Confirm front-panel LED behavior matches normal operating states.
Perform basic RS-232 loopback and serial communication checks with a terminal or serial tester.
Record model, revision, and firmware/hardware markings.
Pack in anti-static packaging with test notes.

The Engineer’s Warning (Pitfalls)The most common mistake is swapping the INICT01 without photographing the original DIP switches. I have watched a perfectly good replacement sit there looking healthy while the host timed out because the baud rate or address did not match. Another trap: treating it like a plug-and-play Ethernet card. It is not. The serial cable, grounding, and host software session parameters all have to match. One bad ground on an RS-232 run can make the link flap for days before anyone admits the cable is the problem.

Installation & Configuration Guide

1. Pre-Installation ⚠️

Follow site safety rules.
Confirm the INFI 90 rack and slot are approved for this module.
Photograph the old module, DIP switches, serial cable labels, and slot number.
Verify the host computer software configuration before removing the old card.

2. Removal

Label the serial cable.
Release the module retaining hardware carefully.
Pull the module straight out without forcing the backplane connector.
Store the old module for reference.

3. Installation

Copy the DIP switch settings exactly from the old module. This prevents most startup failures.
Insert the new INICT01 firmly into the correct slot.
Secure the retaining hardware.
Reconnect the RS-232 cable and confirm pinout.

4. Power-On & Testing

Verify INFI 90 rack power is stable.
Watch the LED sequence during boot.
Check the host serial session for valid communication.
Confirm data reads, alarm updates, and any required write functions.
Do not declare the job complete until the historian or HMI shows consistent data.

Compatible Replacement Models

Model	Compatibility	Notes
INICT01 (same revision)	✅ Drop-in	Best option if DIP switches and host settings match.
INICT03 / INICT03A	⚠️ Software/Config Compatible	Same family, but verify interface, bus connection, and host software support.
INICT13A	⚠️ System-Level Alternative	Newer Infi-Net computer interface; not a simple one-for-one swap without engineering review.
SPICT13A	❌ Hardware/Engineering Change	Later ABB replacement path for INFI 90 computer interfaces; requires system assessment.

Frequently Asked Questions (FAQ)

Can I hot-swap the INICT01?
Not unless your site procedure explicitly allows it. INFI 90 modules can sometimes be replaced online, but the host session will likely drop. If the historian or HMI depends on that link, plan a short communication outage.Is the INICT01 the same as INICT13A?
No. They belong to the same family, but they are not identical. INICT13A supports different interface options and may connect to the network side differently. Do not substitute without checking the system architecture.Why is my host computer seeing the module but not reading data?
Most of the time it is serial configuration: baud rate, parity, stop bits, handshaking, or cable wiring. The module can power up cleanly and still refuse valid sessions if those parameters are off.Does it support Ethernet?
No. The INICT01 uses RS-232-C. If you need Ethernet, you would normally look at a newer interface module or a serial-to-Ethernet gateway, but that requires host software validation.What should I send before ordering?
Photos of the nameplate, DIP switches, serial connector, and the slot location. Also share the host software type, serial parameters, and what the module is supposed to do in your system. That saves a lot of back-and-forth.