Category: Emerson

The PR 6423 is a non-contact eddy current transducer with a rugged

construction and designed for extremely critical turbomachinery

applications such as steam, gas, compressor and hydro turbomachinery,

blowers and fans.

The purpose of a displacement probe is to measure position or shaft

movement without contacting the measured surface – the rotor.

In the case of sleeve bearing machines, the shaft is separated

from the bearing material by a thin film of oil. The oil acts as

a dampener and therefore the vibration and position of the shaft

are not transmitted through the bearing to the bearing case.

The use of case vibration sensors is discouraged for monitoring

sleeve bearing machines since the vibration produced by shaft motion

or position is greatly attenuated through the bearing oil film.

The ideal method of monitoring shaft position and motion is by

mounting a non-contact eddy sensor through the bearing, or

inside the bearing, measuring the shaft motion and position

directly.

Features

• Cost Effective—Single trip valve construction

reduces costs and spare part requirements of those

systems using three separate switching valves to

perform the failure functions. A single trip valve

greatly simplifies piping requirements.

• Ease of Mode Conversion—Conversion to any of the

fail modes requires only minor hookup changes.

• Adjustable Trip Valve—The trip point is adjustable

for specific supply pressure requirements.

• Reliable Operation—The trip valve design includes

large diaphragm areas and few moving parts for

efficient performance, minimum maintenance, and

long service life.

Specifications

Available Configurations

When supply pressure falls below the trip point,

377D Trip Valve: Fails actuator piston down. Includes

check valve and volume tank.

377L Trip Valve: Locks actuator piston in the last

position.

377U Trip Valve: Fails actuator piston up. Includes

check valve and volume tank.

377CW Trip Valve: Fails fully clockwise to close the

valve. Requires check valve and volume tank. Trip

valve moves piston to either up/down position and

requires actuator configuration for actual clockwise

movement.

377CCW Trip Valve: Fails fully counterclockwise to

close the valve. Requires check valve and volume

tank. Trip valve moves piston to either up/down

position and requires actuator configuration for

actual counterclockwise movement.

All 377 trip valves can be converted to any of the

above fail modes with minor hookup changes

Fisher™ 377 Trip Valve

Fisher 377 pressure‐sensing trip valves are for control

applications where a specific valve/actuator action is

required when supply pressure falls below a specific

point. When supply pressure falls below the trip point

(see figure 1), the trip valve causes the actuator to fail

up, lock in the last position, or fail down. When the

supply pressure rises above the trip point, the 377 trip

valve automatically resets, allowing the system to

return to normal operation. The trip valve can be

top‐mounted on a manifold, yoke‐mounted, or

bracket‐mounted to match the application

requirements. 377 trip valves can be used with Fisher

480. 585C, 685. 1061. 1066. 1069. and Bettis™ G

Series piston actuators.

Ordering Information (Cont’d) 

Cables are available in lengths required for your migration 

project. These cables can be pre-wired and tested to DeltaV I/O 

terminal blocks. These custom loomed cables are all connected 

to the nosecone adapter on one end, open-end / flying lead on 

the other end, all open wires marked with the corresponding 

pin number and have ferrules on each wire, 18-22 AWG can be 

specified, and flying-lead to connect to the DeltaV I/O. Contact 

your local Emerson representative for pricing and availability. 

Prerequisites 

A preliminary site visit is required to survey installed control 

system architecture and electrical grounding practices, to 

document I/O models and numbers of each, and to review 

schedule constraints and turnaround objectives. Qualified 

Emerson engineers or technicians perform site reviews. 

Services 

For help in planning, justifying, or implementing your system 

migration, contact your local Emerson representative. Expert 

consultants are available to advise you on a variety of concerns, 

including safety system design, implementation and standards 

compliance, digital buses, wireless applications, control performance, 

and process optimization. 

Product Description and Specification 

DeltaV Flex.Connect solutions provide direct connection from 

Foxboro I/A Series 100 I/O to DeltaV Electronic Marshalling. 

The following Foxboro I/A Series 100 I/O FBM point types have 

DeltaV Flex.Connect solutions as described below: 

Series 100 

DeltaV Flex.Connect solutions passive nosecone adapters and 

cables connect FBM terminal blocks to standard DeltaV AI, AO, 

DI, and DO CHARM terminal blocks via a passive DIN-rail mount 

nosecone adapter (see Figure 1). 

◼ Analog Inputs FBM01 

8 Analog Inputs connect to 8 4-20mA AI HART CHARMs 

◼ Analog Inputs/Outputs FBM04 

4 Analog Inputs and 4 Analog Outputs connect to 4, 4-20mA 

DeltaV AI HART & 4, 4-20mA DeltaV AO HART CHARMs

◼ Digital Inputs FBM07A/12A 

16 Digital Inputs connect to 16, 24 VDC DeltaV DI 24 VDC Isolated 

CHARMs 

◼ Digital Inputs FBM07B/12B 

16 Digital Inputs connect to 16 24VDC Low-Side Sense (dry 

contact) CHARMs 

◼ Digital Inputs FBM08/13 

16 Digital Inputs connect to 16 120 VAC Isolated CHARMs 

◼ Digital Inputs/Outputs FBM09A 

8 Digital Inputs (external power source) connect to 8 24VDC 

Isolated CHARMs and 8 Digital Outputs connect to 8 24VDC 

Isolated CHARMs 

◼ Digital Inputs/Outputs FBM09B 

8 Digital Inputs (internal power source) connect to 8 24VDC 

Isolated CHARMs and 8 Digital Outputs connect to 8 24VDC 

Isolated CHARMs 

◼ Digital Inputs FBM09C 

8 Digital Inputs (external power source) connect to 8 24VDC 

Low-Side Sense (dry contact) CHARMs and 8 Digital Outputs 

connect to 8, 24VDC Isolated CHARMs 

◼ Digital Inputs FBM09D 

8 Digital Inputs (internal power source) connect to 8 24VDC 

Isolated CHARMs and 8 Digital Outputs connect to 8 24VDC 

Isolated CHARMs 

◼ Digital Inputs FBM10/15 

8 Digital Inputs connect to 8 120VAC Isolated CHARMs and 8 

Digital Outputs connect to 8 120VAC High Side CHARMs 

◼ Reduce business risks by minimizing process downtime 

◼ Save on installation costs 

◼ Preserve HART® signals  

Introduction 

If concerns about downtime and wiring costs are preventing 

you from migrating your Foxboro™ I/A Series 100 I/O to a new 

DeltaV™ system, consider DeltaV Flex.Connect solutions for 

Foxboro I/A Series 100 I/O. 

Benefits 

Reduce business risks by minimizing process downtime. This 

solution brings device signals to DeltaV I/O from existing Foxboro 

I/A Series 100 Fieldbus Modules (FBMs). Keeping device 

wires intact accelerates the new system startup, enabling you to 

rapidly resume production. 

Save installation costs. Eliminating new device wiring saves money 

and reduces the risk of errors. Time and material savings are 

significant. 

Preserve HART signals. Use HART® Pass-through for complete 

diagnostics at the DeltaV workstations.

Retain Valuable Intellectual Property 

While Improving Control Performance 

with Tool Based Database and  

Display Analysis

Striking a balance between complete reverse engineering and 

starting design from scratch is achieved by taking a Forward 

Engineering approach which is enabled by using analysis tools, 

purpose built for the legacy platform. For Foxboro I/A Series 

Systems, a tool-set is available for both the control database 

and FoxView displays. Parsers extract the raw data and 

sophisticated algorithms produce reports from detailed I/O lists 

to an assessment of complexity, class-based versus custom code 

and much more. These outputs are designed to allow engineers 

to assess reusable code, such as base level loops, motors,  

valves etc. and complex logic structures which might be 

improved by redesign in a modern system. For example,  

the use of equipment modules can make operation, 

visualization and troubleshooting much easier than “spaghetti” 

function block code. Tools are transforming some traditional 

manual workflows into digital workflows which increases 

project efficiency, ensures the required functionality is  

achieved with a modern design and reduces the risk of errors  

or a flawed implementation. For your business, this translates 

to a faster ramp-up to full production, improved controls, 

confident operators and maintenance staff.

Maximize capital efficiency

With robust processes, tools and with the right technology, 

Emerson can deliver modernization projects that are low risk 

and make best use of your capital. We can help manage scope, 

reduce or eliminate engineering and design work, reduce space 

requirements, and ultimately deliver the value you should 

expect from the world’s leading distributed control system.

Solutions for Legacy Foxboro  

I/A Series Systems

Reduce Downtime by Up To 75%  

with FlexConnect®:

When downtime must be kept to a minimum,  

FlexConnect solutions allow existing field terminations  

to remain. This saves time and reduces the cost of  

rewiring. Solutions are available for both FBM 100 series  

and 200 series I/O.

For FBM 100 series, the nosecones are retained along with the 

existing field I/O terminations. An adapter is connected to the 

nosecone and the signals are routed to DeltaV I/O modules  

via cables which will typically be pre-wired at the factory for  

the shortest possible cutover.

Emerson’s technology can help

DeltaV technology provides unprecedented flexibility  

to work within the constraints of brownfield projects.  

Electronic marshalling can be installed almost anywhere,  

can be highly distributed, and with over 40 I/O wiring options  

it can handle all the signal types existing in your facility. 

The PK controller has the capacity to handle all the basic 

process control functions PLUS advanced control, sequences, 

state-based control, and batch logic. It can also be deployed 

in smaller, standalone applications, and with built-in Ethernet

based connectivity, it can easily integrate data from 3rd party 

devices like PLCs and drives and can easily provide data to 

enterprise applications. 

Brownfield Solutions

On top of this, Emerson has a vast catalog of solutions 

specifically designed to aid in modernizations. The FlexConnect 

Solutions portfolio speeds up cutover and avoids re-termination 

of field wires. Emerson’s Alliance Program includes a  

portfolio of tested gateways that help phase the transition  

to DeltaV. And for the software transition, Emerson has a  

world-class set of tools to enable a modern, maintainable, 

functional implementation of the control strategy while 

retaining important intellectual property from the  

legacy system.

Emerson is the lowest risk option

With over 6000 transitions to DeltaV from all types of  

legacy systems, Emerson has the experience to solve  

any challenge. Utilizing established processes, our subject 

matter experts will assess the state of your automation,  

quantify operational benefits, and justify, plan, and execute 

your project. Emerson has over 5000 project resources 

worldwide along with dedicated Modernization Teams  

to ensure your project is executed flawlessly, on schedule,  

with minimum production impact.

Emerson’s technology can help

DeltaV technology provides unprecedented flexibility  

to work within the constraints of brownfield projects.  

Electronic marshalling can be installed almost anywhere,  

can be highly distributed, and with over 40 I/O wiring options  

it can handle all the signal types existing in your facility. 

The PK controller has the capacity to handle all the basic 

process control functions PLUS advanced control, sequences, 

state-based control, and batch logic. It can also be deployed 

in smaller, standalone applications, and with built-in Ethernet

based connectivity, it can easily integrate data from 3rd party 

devices like PLCs and drives and can easily provide data to 

enterprise applications.