ABB Bailey INNTP01 | INFI 90 Network Termination Panel

The ABB Bailey INNTP01 terminates communication bus lines in INFI 90 distributed control systems. This network termination panel provides proper impedance matching for reliable data transmission. You can install it at both ends of the plant control network bus. It eliminates signal reflections that cause data errors and communication failures. Consequently, this module ensures stable operation of your Bailey DCS network.

Technical Specifications Overview

Parameter	Detailed Specification
Model	ABB Bailey INNTP01
Category	Network Termination Panel for INFI 90 DCS
Network Type	INFI 90 plant bus / controller bus
Termination Type	Active (electronic) with fault monitoring
Impedance	120 ohms (differential)
Number of Ports	2 (bus in / bus out with termination)
Supply Voltage	24V DC (nominal, 18V to 32V)
Power Consumption	50 mA (typical)
LED Indicators	2 (power, termination active status)
Connector Type	Screw terminal block for bus cables
Enclosure Rating	IP20 (panel mount for indoor use)
Dimensions (approx.)	120 mm x 80 mm x 30 mm
Weight	0.25 kg (250 grams)
Mounting	DIN rail or backplate (4 mounting holes)
Operating Temperature	0°C to 60°C

Functional Features and Network Termination

The ABB Bailey INNTP01 actively terminates the INFI 90 communication bus lines. You must place one terminator at each physical bus endpoint. This panel monitors the bus voltage and reports termination faults via the LED. Furthermore, it provides surge protection against voltage spikes on long cable runs.

The module includes two screw terminal ports for daisy-chaining multiple panels. You can connect the incoming bus cable to Port 1 and the outgoing cable to Port 2. Additionally, the panel supports both redundant and single-bus configurations. The green LED confirms proper termination and power status.

Installation and Wiring Guidelines

First, mount the ABB Bailey INNTP01 on a DIN rail inside your control cabinet. Next, connect the 24V DC power supply to the designated terminals. Then, attach the INFI 90 bus cables to the screw connectors. Finally, verify that this panel sits at the physical end of your bus segment.

You must not install this terminator in the middle of a bus segment. The panel does not include any onboard data buffering or repeating functions. Always use twisted-pair shielded cable for the INFI 90 network. Furthermore, keep the total bus length within the INFI 90 specification limits.

This network termination panel works perfectly for Bailey DCS upgrades and expansions. It pairs with ABB Bailey INNTP01 units at multiple bus ends. You can replace faulty terminators without reprogramming any controllers. The active design provides better performance than passive resistor terminators.