DESCRIPTION

The 3500/25 Enhanced Keying Module is a half-height, two-channel module used to provide keying signals to the monitoring modules on the 3500 rack.

The module receives an input signal from a proximity probe or magnetic pickup and converts the signal to a digital key signal that

to indicate when the key mark on the shaft coincides with the key sensor.

The 3500 Mechanical Protection System accepts up to four Keyphasor signals in a normal configuration and up to eight Keyphasor signals in a paired configuration.

The Enhanced Keyphasor Module is an improved module for the 3500 system. It provides enhanced keyphasor signal processing over the previous design, while at the same time

It remains fully backward compatible in form, fit, and function with existing Keyphasor modules for use in legacy systems.

The 149369-01 module completely replaces the PWA 125792-01 www.ge-drive.com Keyphasor module.

When Triple Module Redundancy (TMR) applications require system key inputs, the 3500 system should use two Keyphasor modules.

In this configuration, the modules operate in parallel, providing primary and secondary key signals to other modules in the rack.

Systems with more than four pushbutton inputs can use a

paired configuration, provided that

there are no more than four primary keyed phase input signals.

The paired configuration requires two

Two consecutive monitor positions

up/down positions or two half-slot positions. Four

keypad modules will accept four primary

and four spare input channels and provide

four output channels (one per module).

Two paired and one unpaired (for a total of three Keyphasor modules) can also be configured.

is also possible. In this

In this configuration, the user can

Configure one unpaired Keyphasor

(order two dual-channel or one single-channel and one 2-channel option).

and a 2-channel option).

Isolated Keyphoner I/O modules are designed for

applications.

Applications that connect to multiple devices in parallel and

applications that require isolation from other systems, such as

control systems. Isolated I/O Modules

Designed for magnetic pickup applications

applications, but provide isolation from Proximitor

applications but provide isolation from the Proximitor.

Provides isolation from the Proximitor application.

This I/O module is primarily used for

measuring shaft speed rather than phase. This

module can provide phase measurement, but

This I/O

phase shift is slightly higher than the non-isolated I/O version.

Figure 1 shows the increased phase shift of the isolated I/O module at different machine speeds.

Enhanced product features include

Generation of once-per-turn event signals, field-upgradeable firmware, and asset management data from multiple event-per-turn inputs.

Firmware and asset management data reporting.