MVA-111

1
MVA-111

• Safety System Interface

3.0
2
Mixing Digital and Analog Technologies
FSC
Digital Output Transmitter
2-wire digital communications
Analog
Multivariable Interface Module
Status
Analog Input Shutdown System
MVA-111
2.0
3
What is the MVA ?
Safety System Interface
Power
Digital Transmitter Input
STAT
RLY
DE
Analog Output
HI
Status Output
LO
Model MVA-111
Multivariable ! Validated ! Bumpless ! Safe!
Accurate
Rev 1.3
4
Multivariable Interface Module

• Process Measurement Validation

STATUS
Analog Output
RELAY
Digital Input
COMM
POWER
Status Output
MVA-111
3.0
5
Process Measurement Validation
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 transmitters digital DE value.

3.0
6
Process Measurement Validation

• Every Process Measurement Value has Status
• Differentiate Maintenance Process Problems

Analog output transmitters trip on maintenance
problems also.
1.8
7
Process Measurement Validation
XMTR DIAGSTATUS
PROCESS VALUE
ACTION
Analog output transmitters have a higher False
Alarm Rate !
UNSAFE
1.8
8
Lower Implementation Cost

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

MVA-111
Digital Output Transmitters
Analog Output Transmitters
PV
PV Status
AI
AI
DI
AI
PV
AI
PV Status
AI
DI
Analog Input Safety System
Safety System
PV
Interface Modules
2-wire digital communications
FSC
2.0
9
Safety System Interfacing
Control System
2-wire digital communications
Transmitter
Safety System
MVA-111
Analog
FSC

• Maintain All-Digital Integration
• Bumpless Secure All-Digital Communication
• Test Validate Using Handheld Communicator
• Incorporate Transmitter Status into Safety
  Shutdown Strategy

Status
10
Safety System Interfacing - multivariable
Control System
2-wire digital communications
Digital Output Multivariable Transmitter
Safety System
Multivariable Interface Module
Analog
FSC
MVA-141
Status

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

2.0
11
1oo1 Honeywell Solutions
1. Analog
2. Digitally Integrated 3. Hybrid 4. Digital
Stand Alone
Safety System
Analog
Safety System
Digital
(PV Status)
Digital Interface
Safety System
SLC
Analog
Digital
(PV Status)
Status
Digital
(PV Status)
Digital Trip Switch
1.9
12
Comparing Solutions
lt Analog Digital gt
other Honeywell Moore Honeywell Honeywell
Honeywell ST3000 XTC ST w/DEM ST w/MVA ST
w/MTS
logarithmic scale
Significantly Less False Alarms
3.0
13
Safety 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 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
Approvals

• 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