ABB Bailey NCIS02 | Control I/O Slave Module

This control I/O slave module provides remote I/O capability for INFI 90 systems. It connects to the master controller via the INFI 90 communication bus. The unit mounts in a remote rack away from the main processor.

Technical specifications

Parameter	Specification
Brand	ABB Bailey
Model	ABB Bailey NCIS02
Product Family	INFI 90
Category	Control I/O Slave Module
Input Channels	16 (sixteen) digital inputs
Input Voltage	24V DC nominal (20V to 30V)
Input Current	7 mA per channel
Output Channels	16 (sixteen) digital outputs
Output Type	Transistor (sourcing)
Output Current	0.5 A per channel (2A total)
Communication Protocol	INFI 90 slave bus
Scan Time	12 ms (inputs and outputs)
Maximum Cable Length	1000 meters to master
Component Count	Approximately 120 components
Integrated Circuits	16 ICs (processor, optocouplers, drivers)
Power Supply	24V DC external
Current Consumption	200 mA (logic) + load current
Status Indicators	32 x LEDs (I/O status), 2 x LEDs (PWR, COM)
Energy Storage	None (no battery or capacitor)
Dimensions (L x W x H)	Approx. 22 cm x 11 cm x 3.5 cm
Weight	Approx. 0.45 kg
Operating Temperature	0°C to 55°C
Mounting	INFI 90 rack slot

Detailed Technical Analysis

This slave module provides sixteen digital inputs and sixteen transistor outputs. It communicates with the master controller over the INFI 90 bus. The unit scans its inputs and updates outputs every 12 milliseconds. You can place the remote rack up to 1000 meters from the master.

Now let us examine its input characteristics. Each input draws only 7 mA at 24V DC. A logical “1” signal requires between 15 and 30 volts DC. The outputs use sourcing transistors with 0.5 amps per channel. The module limits total output current to 2 amps maximum.

This slave module draws 200 milliamps from a 24V DC external supply. Thirty-two LEDs show the status of every I/O point. Two additional LEDs indicate power and communication status. The board contains no batteries or capacitors for energy storage. The ABB Bailey NCIS02 provides optical isolation for both inputs and outputs.

Installation and Configuration Guidelines

You insert this module into any INFI 90 rack slot in a remote location. Connect the 24V DC power supply to the designated terminals. Wire field devices to the input and output terminal blocks. Connect the communication bus cable from the master controller.

Configure the slave address using the jumper blocks on the module. The master automatically recognizes the module upon power-up. Test all I/O points before placing the system into service. Always power down the rack before inserting or removing this module.

Practical Applications

Engineers use this slave module for INFI 90 system expansion and remote I/O. It places I/O near field devices to reduce wiring costs. This component also works in legacy DCS retrofit projects. Its 32 total channels suit distributed I/O applications.

Summary of Features

To conclude, this slave module provides 16 inputs and 16 outputs with 12ms scan time. It weighs 0.45 kilograms and supports 1000-meter cable runs. Choose ABB Bailey NCIS02 for reliable remote I/O in INFI 90 systems.