1

MVA-111MVA-111Safety System Interface

3.0

2

Mixing Digital and Analog TechnologiesMixing Digital and Analog Technologies

2-wire digital communications

MultivariableInterface

Module

Digital Output Digital Output TransmitterTransmitter

Analog

Status Analog Input

Shutdown System

2.0

MVA-111

FSC

3

Status Output

Power

Digital Transmitter Input

STAT

RLY

DE

HI

LO

MultivariableMultivariable ! ! Validated Validated ! ! BumplessBumpless ! ! SafeSafe! ! AccurateAccurateRev 1.3

Safety System InterfaceSafety System Interface

What is the MVA ?What is the MVA ?

ModelModelMVA-111MVA-111

Analog Output

4

Analog Output

Digital Input

STATUS

RELAY

COMM

POWER

Status Output

Digital output transmitters provide status with every measurement value

Every analog output value is validated Analog output transmitters cannot provide this

synchronous measurement validation

Multivariable Interface ModuleMultivariable Interface Module

Process Measurement Validation

MVA-111

3.0

5

Unlike an analog output transmitter alone, the MVA provides true Process Measurement Validation . . .

Every digital Process Measurement Value from the transmitter has diagnostic Status Transmitter status is passed through the MVA to the FSC

MVA analog repeat output is Synchronously Validated for: Transmitter Diagnostic Status Communication(DE) Integrity MVA Diagnostic Status

AND . . . MVA Analog Repeat Output Signal integrity

- The MVA analog output (into the FSC) is re-sampled by the MVA and validated for agreement with the transmitter’s digital DE value.

Process Measurement ValidationProcess Measurement Validation

3.0

61.8

PROCESS VALUE

TRANSMITTER DIAGNOSTIC

STATUS ACTION

SAFE GOOD SAFE

BAD MAINTENANCE REQUIRED

BAD MAINTENANCE REQUIRED

UNSAFE GOOD PROCESS ALARM TRIP

UNSAFE

SAFE

• Every Process Measurement Value has Status

• Differentiate Maintenance & Process Problems

BAD MAINTENANCE REQUIRED

BAD MAINTENANCE REQUIRED

GOOD PROCESS ALARM TRIP

Analog output transmitters trip on maintenance problems also.

Process Measurement ValidationProcess Measurement Validation

71.8

PROCESS VALUE

XMTR DIAG

STATUSACTION

Process Measurement ValidationProcess Measurement Validation

AnalogAnalog output output

transmitters transmitters have a higher have a higher False Alarm False Alarm

Rate !Rate !

SAFE BAD MAINTENANCE REQUIRED

UNSAFE GOOD PROCESS ALARM TRIP

BAD MAINTENANCE REQUIREDUNSAFE

GOOD PROCESS ALARM TRIPUNSAFE

Digital output transmitters . . . .• Only trip when validated• Reduced false alarms

8

Lower Implementation Cost Lower Implementation Cost

Use 2 Transmitters vs. 3 Same System Availability Improved Shutdown Performance Transmitter Status Integrated into Strategy

2-wire digital communications

Interface Modules

Safety System

AI

AI

AI

Analog Input

Safety System

AI

AI

DI

DI

PV

PV

PV

PV + Status

PV + Status

DigitalDigital Output Transmitters

AnalogAnalog Output Transmitters

MVA-111

2.0

FSC

9

Safety System InterfacingSafety System Interfacing

Maintain All-Digital Integration

Bumpless & Secure All-Digital Communication

Test & Validate Using Handheld Communicator

Incorporate Transmitter Status into Safety Shutdown Strategy

MVA-111

2-wire digital communications

Transmitter

Control System

Safety System

Handheld Communicator

Status

Analog

FSC

10

Safety System InterfacingSafety System Interfacing - multivariable

MultivariableInterface

Module

2-wire digital communications Control System

Safety System

Status

Analog

Multivariable Measurement Access Process Measurement Validation Incorporate Transmitter Status into Strategy Integration with Control System

Digital OutputDigital OutputMultivariable Multivariable TransmitterTransmitter

MVA-141

2.0

FSC

11

1. Analog

1oo1 Honeywell Solutions1oo1 Honeywell Solutions

Analog

Analog

Digital

Digital

Digital

(PV + Status)

(PV + Status)

(PV + Status)

Status

Safety System

Safety SystemDigital Interface

Digital Trip Switch

SLC

Safety System

1.9

2. Digitally Integrated

3. Hybrid

4. Digital Stand Alone

12

Comparing SolutionsComparing Solutions

< Analog Digital >other Honeywell Moore Honeywell Honeywell Honeywell

ST3000 XTC ST w/DEM ST w/MVA ST w/MTS

Significantly Less False Alarms

3.0

log

arit

hm

ic s

cale

13

Safety System BenefitsSafety System Benefits

Process Measurement Validity

Accurate & Repeatable

Enables Multivariable Capability

Differentiate MAINTENANCE from PROCESS problems Avoid false shutdowns Incorporate status into strategy

Lower Installation Cost

Configurable “Forced Manual” mode Routine validation testing

Eliminate Alarms (loop short/open detect)

Enhance Personnel Safety

14

Vektron Interface SolutionsVektron Interface Solutions

Signal Splitter 51204932-001 = MVA-111 = 1 analog output 51204932-002 = MVA-141 = 4 analog outputs

PV Alarm 51204933-001 = MTS-102 = no analog output 51204933-002 = MTS-112 = 1 analog output

3.2

15

ApprovalsApprovals

CE Mark (Europe) Industrial Classification Emissions: Group 1, Class A, Industrial

Control Equipment, EN 55011. Immunity: Industrial,EN 50082-2, immunity

CSA (Canada) C22.2 No. 205M – Signal Equipment

UL (USA) UL1635 – Digital Alarm System Unit

Designed to Meet Emerging Standards ISA S84 IEC 16508

Rev 1.3