Parr Series 4870 Process Controllers

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Parr Series 4870 Process Controllers
  Parr Instrument Company is now offering a
new model computer based Process Control
System. The principle features of this controller
include         PC control with graphical
user interface.        Based on Honeywell
universal multi-loop controller (UMC
800) for proven industrial design and
support.        Modular design for unusual
adaptability and expandability.       
Independent controller with integrated safety
features.        Control capabilities for up to
8 independent reactors.        Process control
recipe programming.        Multi-loop
capability.
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The three primary controller components
are   1. Personal Computer running any current
windows operating system. This becomes the
users control station. It can be conveniently
located. A variety of graphical user interfaces
are available. 2.   Control Module. This is the
heart of the 4870 Process Controller. All
control actions are generated in this module (not
the PC). It can be equipped with a variety of
modules to tailor it to the operators individual
installation. Both the hardware and the
operating software can be readily revised if
operations change. 3.   Power Controller. All
high current load handling relays and motor speed
controls are located in the 4875 Power
Controllers. These power controllers are matched
to the requirements of the individual systems
being controlled.
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Unmatched Value in a Multiloop Controller
Versatile Operation

• Control loops
• Setpoint programs
• Analog/digital status
• Bar graph groups
• Trends
• Alarm status
• Profile, recipe loading
• Data storage option

Vertical
Horizontal
Exceptional Functionality

• Modular I/O design
• Multiloop PID Control
• Setpoint programming
• Process logic, timers, counters
• Process algorithms, calculations
• Stores SP profiles, recipes

Honeywell
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ALARM
F1
F2
F3
ESC
F4
3
1
2
5
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Architecture
Users PC
RS232
Control Builder Software
Power
90 -240AC
Communication Power
Controller
Up to 50 ft
Operator Interface
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Capacity

• Hardware
• Up to 64 Analog Inputs
• Up to 16 Analog Outputs
• Up to 96 Digital I/O
• Software
• Up to 16 Control Loops
• 1 SP Scheduler w/10 schedules
• Up to 4 SP Programmers
• w/70 SP profiles (50 seg ea)
• Recipes - Up to 50 w/50 parameters
• Up to 250 Analog or Digital
• Function Blocks

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Modular Design
16 Module Locations - 4 I/O Module Types

• Analog Inputs (4 point)
• Analog Outputs (4 point)
• Digital Contact Closure Inputs
• Digital 24 VDC Outputs

Controller
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Analog Inputs

• 4 inputs per module
• Universal Inputs- thermocouple,
• mA, mV, Volt, ohms, RTD
• 400 V isolation point to point
• 0.1 of Span Accuracy

Analog Scan Rates
4 - 8 Points 333 ms 9
- 12 Points 450 ms 13 -
16 Points 600 ms 17 - 20 Points
750 ms 21 - 24 Points
900 ms
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Analog Outputs

• 4 Outputs per Module
• 4 Modules Maximum
• 4 - 20mA Standard
• 0 to 24mA Maximum Output Span
• 800 Ohm Maximum
• 24VDC Transmitter Supply Selection

Used for control or retransmission of analog
variables
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Digital Outputs

• 6 outputs per module
• Module Types
• Solid State DC 0.3A
• Update Rate 100 ms

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Digital Inputs

• 6 inputs / module
• Module Types
• Contact Closure - No external power needed
• Scan Rate - 100 ms

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Typical I/O Requirements for a Single Reactor
Analog Inputs (3) Temperature, Pressure,
RPM Analog Outputs (1) Stirring Speed Set
Point Digital Outputs (3) Heating, Cooling,
Circuit Breaker
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Control Loops
Up to 8 PID Loops standard, 16 PID Loops optional

• PID
• 2 Setpoints (2 local or 1 local and 1 remote)
• 2 Sets of PID constants
• 2 Alarms
• PID-A or PID-B
• Feedforward Input
• Output Track Value
• Control Types
• Duplex - Heat/Cool
• Internal Cascade
• Ratio (with bias)

LOOP 2
2500.0
1500.0
PV 2205.0 SP 2000.0 OUT
83.5 AUTO LOC
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Auto-tuning

• Accutune II Auto-tuning
• Standard feature
• Apply to any, or all control loops
• Provides initial tuning
• Adapts to process upsets
• Retune on-request
• Accutune II Fuzzy Logic -Overshoot Suppression
• Standard feature
• May be enabled to minimize overshoot
• Retains existing PID constants
• Allows for more aggressive PID tuning

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Control Outputs
0
100

• 4 - 20 mA
• Scaleable between 0 and 24mA
• Time Proportioning
• Min. OFF time and min. ON time available
• Use any digital output
• Three Position Step
• Position actuators without feedback
• Use any 2 digital outputs
• Position proportional control w/ slidewire fb)
  
• Uses 2 loops incl. 3 Position Step

8 loops maximum
16 loops maximum
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Setpoint Programmers

• Up to 4 independent SP programmers
• Up to 50 segments per program
• Up to 70 stored profiles
• Aux analog value output / segment
• Hours or minutes timebase
• Up to 16 event outputs / program
• User specified power failure recovery rate

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Setpoint Scheduler

• One SP scheduler with 8 outputs
• All outputs use a common timebase
• Up to 50 segments per program
• Up to 10 stored schedules
• Aux analog value output / segment
• Hours or minutes timebase
• Up to 16 event outputs / program

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Recipes
Load setpoints, select setpoint programs,
activate valves, set alarm limits and enter
other values with a single instruction.

• Up to 50 Recipes (Standard)
• Up to 50 parameters each
• Analog Values
• Digital states
• Setpoint Program Numbers

RECIPE DETAIL
PAGE 1 OF 1
GASFLOW 6.20 PRESSURE 0.25 PROGRAM1 15 ALM
SP 100 PREHEAT 200 PHTIME 20 PUMP1 ON
RUN
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Function Blocks
Total Available 250 Execution Analog scan, 1
through n in sequence Scan rate based on of
analog inputs Fast logic scan, 1 through n in
sequence Scan Rate 100ms Types Analog
I/O PID algorithms Setpoint Programmers Predefined
Algorithms
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Function Block Algorithms
Boolean Logic AND OR XOR NOT Up/Down
Counter Push Button One-Shot Latch Flip/Flop On-de
lay Timer Off delay Timer Boolean
Calculation Others
Analog Algorithms Signal Selection Function
Generator Compare Totalize Math Custom
Calculation Max, Min, Average Periodic
Timer Lead/Lag Mass Flow Track Hold Velocity
Limit Others
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Uses Function Blocks to Tightly
Integrate Analog, Digital and Control Loop
Functions
Analog Calculation
Boolean Logic and Timing
PID Loop Control
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Basic PID Configuration
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Cascade Control - Batch Reactor (Heat/Cool)
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• Key Features
• High accuracy analog measurements (15 bit AI,
  16 bit AO)
• Isolated, universal analog input cards
• Powerful PID control algorithms
• Autotuning, fuzzy logic overshoot suppression
  per loop
• Large library of function blocks for control
  flexibility
• Tightly coupled analog and digital logic
  functions
• Easy setup for setpoint programming
• Stored recipe and set point profile loading
  from memory
• Modbus RTU Communications
• Advanced Windows-based graphic configuration
  tool
• Self Documents control strategy

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Benefits

• Replaces a mix of control products - saving
  cost
• High accuracy control - better product
  results, lower cycle time
• Provides superior loop and logic control
  flexibility
• Design time minimized using graphical
  configuration tools
• Better process documentation for future
  changes
• Integrated analog and digital functions
  reduces wiring time/expense
• Pre-packaged display screens reduce startup
  time, also save on
• hardwired panel mounted pushbuttons
  indicator lights
• Modular I/O design allows you to buy only what
  you need
• Trend screens data storage reduce the need
  for trend recorders
• Easy to setup/use setpoint programming for
  consistent
• batch cycle operation.

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Operator Interface

• Color Graphic LCD Display
• 320x240 pixel resolution
• Library of screen formats
• Text and formatted graphic screens
• Standard real-time data trending
• Sealed membrane keyboard- NEMA 12
• 5 User defined screen access keys
• Changeable key labels
• Dedicated Alarm detail/acknowledge key

• Optional 3.5 1.44MB floppy disk drive
• Store and retrieve
• Configurations, Recipes, Setpoint profiles
• Optional data storage
• Store trends, data logs, alarms, and
  events
• to floppy drive, PC-based setup using SDA s/w

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