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FISHER-ROSEMOUNT SYSTEMS Multifunction Cardourse 7009 - Rev 3 - 4/15/0117-1
TM
Multifunction Card
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ObjectivesUpon completion of this module you will be able to:
Define the purpose of the Multifunction Card
Define the screw terminals used on the terminal block
Define the input frequencies for both sine and square waves
Define the user parameters on a pulse input channel
Define the pulse input function block parameters used
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FISHER-ROSEMOUNT SYSTEMS Multifunction Cardourse 7009 - Rev 3 - 4/15/0117-4
Power
Error
Multifunction Card &
Terminal BlockLEDs:
Green - On powered and self tests are good.
Red ON- Failed and/or not communicating to the controller.
Red Flashing - Card not being scanned by controller
Multi-function cardsupports four channels configured as
Discrete Inputs (DI) or Pulse Inputs (PI).
Multi-function terminal blockhas 32 terminals available. The
matrix below shows the terminals used with current release
capabilities for the card and the terminal connections for use
with future enhancements.
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FISHER-ROSEMOUNT SYSTEMS Multifunction Cardourse 7009 - Rev 3 - 4/15/0117-5
Multifunction Terminal Block MatrixPosition 1 Position 2 Position 3 Position 4 Position 5 Position 6 Position 7 Position 8
1
AI-Ch 1
5
AI-Ch2
9
AI-Ch3
13
AI-Ch4
17 (+)
DI-Ch1
21 (+)
DI-CH2
25 (+)
DI-Ch3
29 (+)
DI-Ch4
Top
Row
2AI-RTN 6AI-RTN 10AI-RTN 14AI-RTN 18 (-)DI-RTN 22 (-)DI-RTN 26 (-)DI-RTN 30 (-)DI-RTNSecondRow
3
AO-Ch1
7
AO-Ch2
11
+24VDC
15
+24VDC
19 (+)
DO-Ch1
23 (+)
DO-Ch2
27 (+)
DO-Ch3
31 (+)
DO-Ch4
Third
Row
4
AO-RTN
8
AO-RTN
12
24V-RTN
16
24V-RTN
20
DO-RTN
24
D0-RTN
28
DO-RTN
32
DO-RTN
Bottom
Row
Reserved for future use Currently being used
The Multifunction Card was designed to support high frequency pulse input.
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FISHER-ROSEMOUNT SYSTEMS Multifunction Cardourse 7009 - Rev 3 - 4/15/0117-6
INPUTS
Input frequency sine wave 10Hz - 50KHz, Square Wave 0.1Hz - 50KHz
Input accuracy 0.1% reading (over 0.1Hz - 50KHz)
Resolution +/- 1 pulse
Minimum pulse width 10us.
Maximum input voltage 24VDC+/ 10%
Detection level for ON 4.8VDC (min.)
Detection level for OFF 1.0VDC (max.)
Isolation Each channel is optically isolated from the system at 250 VAC
Resolution counter 32 bits
Pulse Input Specifications
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Multifunction Card Channels
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Multifunction Card Channels
Using DeltaV Explorer
TheMultifunction Cardhas four channels used asDiscrete Inputs or as Pulse
Inputs. The Multifunction Card is specifically designed for high frequency pulse
inputs.
The Channel properties dialog box includes:
Enable: A check in this box enables the port to be the channel on the
Multifunction card.
Description: Up to 40 characters for a description to appear in Explorer
Channel Type: The user chooses between Discrete Input and Pulse
Input.
Device Tag: The user may enter a unique name, up to 16 characters, for
each channel. The example above shows Pulse-1.
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Multifunction Card Channels
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Multifunction Card Channels
Using DeltaV Explorer
The Pulse Input Channelparameters include:
Counter_In: Usable in control strategies as an external referenceRawCount.
Reset_Count: Usable in control strategies as an external reference.
Writing a non-zero number to this parameter clears the Counter_In
parameter.
Channel Type: The user chooses between Discrete Input and Pulse
Input.
Device Tag: A unique name, up to 16 characters, for each channel.
The example above shows Pulse-1.
Frequency: Only valid I/O_In parameterto a pulse input function
block, also usable in control strategies as an external reference.
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Multifunction Card Channels
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Multifunction Card Channels
Using DeltaV Explorer
The Pulse Input channelsprovide a count and frequency. The signal frequency is
calculated from the number of pulses received over a configured scan period. You
can define the scan period with the FILTERparameter. In selecting the right filterfor the application, you must determine what emphasis should be placed on
precision and what should be placed on response, particularly for slower
frequencies (below 250Hz). The default filter is 1 second.
Filter Parameter: Selecting FILTER Parameter Properties opens theFILTER Propertiesbox. A drop-down window titledNamed Setprovides
you with the predefined filter values that can be used.
As the filters increase, the scan time increases. As the filters decrease, so does the
scan time. Larger filters will give you more precision, but the longer scan rate will
decrease the response to the frequency changes.
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FISHER-ROSEMOUNT SYSTEMS Multifunction Cardourse 7009 - Rev 3 - 4/15/0117-14
Pulse Input Function Block
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Pulse Input Function BlockUsing DeltaV Control Studio
Drag n drop a Pulse Input function blockfrom the I/O category of the function
block palette.
Example: A turbine meter used to measure volumetric flow of a gas steam. Thepulse input function block measuring volumetric flow of a natural gas stream.
Pulse Input function block parameters:
I/O_In Use the browser to select the DST for this input
Out_Scale 0 to X, the range of the meter, used only to back calculate
the Field_Val parameter in percent
Because the meter is pre-set to measure a specific unit, you are permitted to
designate
PULSE_VAL Converts the frequency from the card, from pulses to EU
in the calculation of PV
TIME_UNITS The lapsed time over which a single pulses units are
counted
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Summary What is the purpose of the Multifunction Card?
What screw terminals are used for the Pulse Input device
connections?
What is the input frequency for a sine wave input?
Name two parameter of the Pulse input channel that may be used as
external references.
When using a Multifunction Card pulse input channel, what is the
only valid parameter for I/O_IN to the Pulse Input function block?