NRDO02 L700712 Bailey Infi 90 Output Termination Unit

Overview

Place of Origin:	Sweden
Brand Name:	ABB
Model Number:	NRDO02 L700712
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Specifications

Description

The ABB NRDO02 L700712 is a Relay Output Termination Unit in the ABB Bailey INFI 90 system. It serves as a powerful interface between the control system and high-power field devices, converting low-voltage signals from the control card into relay contact signals capable of driving AC or DC loads.

Applications

Large power plants: Directly drive electric doors, motor starters, and high-voltage alarm bells.

Steel and metallurgical plants: Control solenoid valves for blast furnace material conveyors and hydraulic pump stations.

Oil/chemical plants: Distributed in motor control centers (MCCs), executing remote start/stop logic for pump units.

Paper/cement plants: Used for long-distance control lines, utilizing relays to overcome line voltage drop and interference.

Competitive Advantage

Firstly, its redundant design supports dual power inputs to ensure continuous system operation. The module has built-in intelligent diagnostics, which can monitor overload and short circuit conditions in real time and quickly locate fault points via LED indicators. In terms of system compatibility, it is perfectly compatible with all ABB PLC controllers and supports both PROFIBUS and PROFINET bus protocols. Particularly noteworthy is its hot-swappable function, allowing module replacement without stopping the system, significantly reducing maintenance downtime. The module's vibration resistance design meets the IEC 60533 standard, enabling stable operation in vibration environments of 5-150Hz.

FAQ

Q: What is the difference between the NRDO02 L700712 and a regular Digital Output board?
A: Regular DO boards have extremely low output current and can only transmit signals; the NRDO02 has physical relays and can directly handle loads (such as controlling contactor coils).

Q: If only one of the 16 channels fails, must the entire board NRDO02 L700712 be replaced?
A: If it's a pluggable relay version, only the small relay in that channel needs to be replaced; if it's a soldered version, usually the entire board needs to be replaced or the system needs to be switched to a spare channel.

Q: Why does the relay trip, but the field device doesn't respond about NRDO02 L700712?
A: Please check if the NRDO02's common power supply is connected, or if the external fuse for that channel has blown.

Q: Can the NRDO02 L700712 control both AC and DC loads simultaneously?
A: Yes, but you must pay attention to the common terminal definitions between channels. If channels share a common terminal, that group can only be connected to the same power supply.

Q: Does replacing the NRDO02 L700712 module require a power outage?
A: The external control power supply (such as 120VAC circuit power) of the module must be turned off to prevent electric shock or short circuit accidents during disassembly and assembly.