Overview

The 88984-02 Input Relay Option Card is a critical component in Bently Nevada’s legacy 3300 Series and is compatible with the 3500/94M overspeed protection system. It provides two independent output relays with normally open (NO) contacts, enabling seamless connection to external alarm, trip, and control circuits.

Moreover, this module serves as a physical interface between the monitoring rack and field devices, such as speed sensors and shutdown relays. It does not perform signal processing but ensures protection commands are transmitted accurately and reliably. For instance, in a turbine application, the 88984-02 enables fast relay activation during overspeed events, helping prevent mechanical damage.

Its compact form factor and CE certification make it suitable for deployment in industrial environments worldwide, including petrochemical, power generation, and manufacturing sectors.

Technical Data

Typical Applications

• Overspeed protection relay interface in turbine monitoring systems

• Alarm and trip relay output for compressors and motors

• Integration with external control circuits in industrial automation

• API 670-compliant machinery protection systems

• Expansion of 3300 and 3500 Series monitoring racks

This module is ideal for engineers seeking reliable relay output functionality in high-integrity protection systems. Its robust design and compatibility with both legacy and modern systems make it a versatile choice for industrial safety applications.

FAQ

Q: What systems is the 88984-02 compatible with?
A: It works with Bently Nevada 3300 Series and 3500/94M overspeed protection systems.

Q: What type of relays does it use?
A: It features dual output relays with normally open (NO) contacts.

Q: Does it perform signal processing?
A: No, it serves as a physical interface for relay outputs.

Q: Where is it mounted?
A: It mounts at the rear of the monitoring rack.

Q: What is the warranty period?
A: The module includes a standard 1-year manufacturer warranty.