Cooper Instruments DFI-3900 Installation Manual

DFI 3900

PROCESS METER

USER’S GUIDE

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CONTENTS

1.0 INTRODUCTION AND DESCRIPTION..................................................................................1

1.1 Unit Description ..............................................................................................................................1

1.2 Dimensional Drawings ...................................................................................................................1

2.0 SAFETY SUMMARY..............................................................................................................1

2.1 Main Board/Bottom (P1) and Option Board/Top (P2) Pin Outs...................................................2

2.2 Serial RS-232C Connections on P1 (Main bd) connector............................................................3

3.0 OPERATION AND PROGRAMMING.....................................................................................3

3.1 Front panel Keys.............................................................................................................................3

3.2 Setup Mode Key Functions............................................................................................................4

3.3 Run Mode Key Functions...............................................................................................................4

3.4 Programming Tips ..........................................................................................................................7

3.5 Enter Setup......................................................................................................................................7

3.6 Main Programming Branches........................................................................................................8

3.7 Channel Setup Programming Branch...........................................................................................8

3.8 Output Setup Programming Branch............................................................................................10

3.9 Display Setup Programming Branch...........................................................................................11

3.10 Special Features Programming Branch....................................................................................11

4.0 OPTIONS .............................................................................................................................13

5.0 SPECIFICATIONS................................................................................................................14

DFI 3900 SERIAL COMMUNICATIONS....................................................................................16

WARRANTY REPAIR POLICY..................................................................................................18

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1.0 INTRODUCTION AND DESCRIPTION

1.1 Unit Description

The single input 3900 intelligent process meters feature 5 ½ digit resolution, 6 digit display, 5 front key operation
and a NEMA 4X, industrialized aluminum case. One Form A relay is provided standard for use as an Alarm output.
The 3900 emphasizes the features required in today’s applications, especially scaling of the meter to display in
engineering units. Two methods are provided to scale the meter: no calculation scale and offset, and load
calibration.

Models:
DFI 3900 – 4 analog inputs with 5

Options:
3900-1 4 Individual Analog Outputs & Excitation Output
(Available soon)

3900-2 Serial RS-232C Communication

3900-3 3 Form C Relays
3900-24P 5 VDC

Inputs:
Process inputs selectable for 20mA, 30mV, 100mV, 200mV, 2V, +10V input

The setup of the meter is fully programmed through the front panel keypads. The 115VAC or 220VAC selection is
accomplished through the selection of an internal jumper connection.

1.2 Dimensional Drawings

th

channel math

P2 (Option
Board/Top
Connector)

P1 (Main Board /Bottom
Connector)

2.0 SAFETY SUMMARY

All safety related regulations, local codes and instructions that appear in this literature or on equipment must be
observed to ensure personal safety and to prevent damage to either the instrument or equipment connected to it. If
equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be
impaired.
Do not use this unit to directly command motors, valves, or other actuators not equipped with safeguards. To do so
can be potentially harmful to persons or equipment in the event of a fault to the unit.

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CAUTION: Read complete CAUTION: Risk of Electric shock
Instructions prior to installation
And operation of the unit.

The unit must be properly grounded. Ground connection is tied to the Main Board “P1” connector pin # C.

Fuse replacement must be performed with power disconnected. Use only the same type fuse. The fuse must be a
TR5 microfuse, Time Lag (T), 1 amp, 250VAC. Fuse location shown in section 1.3

2.1 Main Board/Bottom (P1) and Option Board/Top (P2) Pin Outs

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2.2 Serial RS-232C Connections on P1 (Main bd) connector

RS232 Connection to A 9 pin Connector

From P1 Connector to 9 pin connector
Pin F to Pin 3
Pin J to Pin 5
Pin 6 to Pin 2

3.0 OPERATION AND PROGRAMMING

3.1 Front panel Keys

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The front panel keyboard has two modes of operation - SETUP and RUN

SETUP MODE KEYS
SELECT ▲ ▼ EXIT ENTER

RUN MODE KEYS
F1 F2 F3 F4 SETUP

3.2 Setup Mode Key Functions

1. SELECT KEY (→ on flow chart indicates to use this key)

• Selects choice of functions within the menu you are setting up.

o Moves you left/right in the program menu.

• When entering numeric data, it allows the selection of digit to be changed.

o Indicated by digit flashing.

• When selecting decimal point, it moves the decimal point location.

2. UP ARROW KEY

• When entering numeric data, it increments the current value of the flashing digit by one with each push.

3. DOWN ARROW KEY

• When entering numeric data, it decrements the numeric value of the flashing digit by one with each push.

4. EXIT KEY

• If at a Main branch prompt (CODE, CHAN, OUTPUT, DISPLY or SPEC), it exits to you back to RUN mode.

• If in a programming branch, it returns you to Main branch prompt.

NOTE: It does not store data to memory on its return. ENTER key should be pushed first to store selected
entry, then EXIT key.

5. ENTER KEY (↓ on flow chart indicates to use this key)

• Enters selected Main program branch.

o Moves you down in the program branch menu.
o Menu steps can be skipped by repeatedly pushing ENTER key till desired menu step is reached.

• Enters selected choices, numeric data or decimal point, it store the value and advances to next step in the
program menu.

3.3 Run Mode Key Functions

A. Entering SETUP
Push and hold SETUP key for 4 seconds. Meter will first display “SET CH” then display “CODE” or flash
“SETUP then display “CHAN”.

• “CODE” is flashed with 00 if a lockout code has been set under the Main program branch heading SPEC,
CODE menu.
o The preset lockout must be entered at this time. If wrong code is entered or if no code is entered within 20

seconds, meter will return to RUN mode.

o Upon correct lockout code entry, meter enters the SETUP mode.
o The unmarked yellow LED just above the Down/F4 key will light, indicating you are in the SETUP mode.

• If no lockout code, “SETUP” flashed then “CHAN” displayed, indicating you have entered the SETUP mode.
If no key is pressed within 20 seconds, meter will return to RUN mode.

B. If SETUP key pushed and released meter will enter Select Channel program.

• “SET CH” (SET CHANNEL) will be display.

o Push F1 to select Channel 1 for display
o Push F2 to select Channel 2 for display
o Push F3 to select Channel 3 for display
o Push F4 to select Channel 4 for display

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C. FINE TUNE OFFSET/ZERO
Push and hold SETUP key, then DOWN key pushed at the same time and then both keys released.
This program allows the adjustment of the low input display directly from the run mode of the selected channel.
It directly acts as a zero offset. This command allows for “On the fly” adjustments of the zero values. The value
entered will become the display value for the last measured input.

• Display will flash "OFFSet1" (CHAN 1), or "OFFSet2" (CHAN 2)

• Display with last measured input and least significant digit flashing will appear.

o Push UP key to increase display
o Push DOWN key to decrease display
o Push SELECT key to select digit to be changed
o Push EXIT key to return to RUN mode

D. FINE TUNE SCALE/SPAN

Push and hold SETUP key, then UP arrow key pushed at the same time and then both keys released.
This program allows the adjustment of the high input display directly from the run mode of the selected
channel to an adjusted scaled value.

• Display will flash "ScALE"

• Display with live input and with most significant digit flashing will appear.

• Push UP key to increase display

• Push DOWN key to decrease display

• Push EXIT key to return to RUN mode.

Note: You are fine-tuning the least significant digits.

E. USER PROGRAMMABLE MENU LOCKOUT.
To enter, push and hold SETUP key, then enter lockout code “55”. This program allows user to disable/lockout
the following menus from the SETUP program. When the menus are programmed to be locked, the unit will
display “disabl” when you try to enter the menu.

NOTE: A code # must be preprogrammed under SPEC, CODE to get the prompt for the code value.

To disable one or more of the selections add the values from the table and enter that number. If 0 is entered, all
programs under that heading are enabled.

• “LeveL1” is flashed with current selected number, valid values 0-15

0 Don’t Skip any branches
1 Skip all channel programs "CHAn"
2 Skip all output programs "OutPut"
4 Skip all display program "dISPLy"
8 Skip all special programs "SPEC"

Example: Enter number 12 to skip DISPLY and

SPEC branches from normal setup selections.

Once number is entered, display will go to next

branch that is not skipped.

• “CHAN1”, (Only if CHAn is not disabled from above), is flashed with current selected number. Valid values 0-

15.

0 Don’t disable any channel 1
1 Skip input range selection "InPut"
2 Skip user calibration branch "USEr"
4 Skip input calibration branch "InPut"
8 Skip shunt calibration branch"Shunt"

• “CHAN2” (Only if CHAn is not disabled from above) is flashed with current selected number. Valid values 0-7.

0 Don’t skip channel 2
1 Skip input range selection "InPut"

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