125388-01 Bently Nevada Half-height Chassis 125388-01H

Description:

The 3500/25 Enhanced Keyphasor Module is a half-height, two-channel module used to provide Keyphasor signals to the monitor modules in a 3500 rack. The module receives input signals from proximity probes or magnetic pickups and converts the signals to digital Keyphasor signals that indicate when the Keyphasor mark on the shaft coincides with the Keyphasor transducer. The 3500 Machinery Protection System can accept up to four Keyphasor signals for normal configuration and up to eight Keyphasor signals in a paired configuration 

The Enhanced Keyphasor Module is an improved 3500 system module. It offers expanded Keyphasor signal processing capabilities over the previous design while maintaining complete downward-compatibility in terms of form, fit and function with existing Keyphasor modules for use in legacy systems. The Keyphasor module, PWA 125792-01, is completely replaced by the updated 149369-01 module.

When a system Keyphasor input is required for Triple Modular Redundant (TMR) applications, the 3500 system should employ two Keyphasor modules. In this configuration, the modules work in parallel to provide both a primary and secondary Keyphasor signal to the other modules in the rack.

A system with more than four Keyphasor inputs may use a paired configuration provided there are no more than four primary Keyphasor input signals. A paired configuration requires two consecutive monitoring positions in either the upper/lower or both half-slot positions. Four Keyphasor modules will accept four primary and four backup input channels and provide four output channels (one per module). A configuration of two paired and one non-paired (three Keyphasor modules total) is also possible. In such a configuration, the user may configure the one non-paired Keyphasor (order either two 2-channel or one 1-channel and one 2-channel option)

The Isolated Keyphasor I/O module is designed for applications where the Keyphasor signals are tied in parallel to multiple devices and require isolation from other systems, such as a control system. The Isolated I/O module was created specifically for Magnetic Pickup applications but is compatible with and will provide isolation for Proximitor* applications as long as an external power supply is provided.

The intent of this I/O module was primarily to measure shaft speed and not phase. The module can provide phase measurements, but this I/O introduces a slightly higher phase shift than the Non-Isolated I/O version. Figure 1 shows the amount of phase shift that the Isolated I/O modules will add at different machine speeds.

Enhanced product features include generation of once-per-turn event signals from multi-event-per-turn inputs, field-upgradeable firmware, and asset management data reporting.

3500/25-AA-BB-CC

A: Number of channels
01
Single half-height 2-channel Keyphasor card (order for 2-channels)
02
Two half-height 2-channel Keyphasor cards (order for 4-Channels)

B: Type of I/O Module
01
I/O module with Internal Terminations
02
I/O module with External Terminations
03
Internal Barrier I/O with Internal Terminations

04
Isolated I/O module with Internal Terminations (Designed for use with Magnetic Pickups)
05
Isolated I/O module with External Terminations (Designed for use with Magnetic Pickups)

C: Agency Approval Option
00
Not required
01
CSA/NRTL/C (Class 1, Div 2)
02
ATEX/IECEx/CSA (Class 1 Zone 2)

Spare

Half-height Card Adapter

Frequently Asked Questions:

1.What is Rack Space Requirement of 3500/25 149369-01?

Main Module

1 half-height front slot
The half-height main modules require a special mounting adapter for mounting in the full-height slots. The user can place the main modules in any one of the 14 available slots. Each rack may have no more than two main modules, one in a top half-slot and one in a bottom half-slot.

I/O Modules
1 full-height rear slot

2.What's Keyphasor Transducer Power Supply of  3500/25 149369-01?
-24 Vdc, 40 mA maximum per channel.

Datasheet Link:

125388-01 Bently Nevada Half-height Chassis 125388-01H PDF Datasheet