Omega DP3600 User Manual

PROGRAMMABLE

PROCESS MONITORS

USER’S MANUAL

DP3600, DP3700 AND DP3800 SERIES

OMEGA ENGINEERING, INC., ONE OMEGA DRIVE, STAMFORD, CT 06907. MANUAL: M881/0399

SPECIFICATIONS...............................................................................................................................................................................................3

DESCRIPTION......................................................................................................................................................................................................4

SET UP .....................................................................................................................................................................................................................4

SETUP ENTRY: ...................................................................................................................................................................................................... 4

SETUP EXIT:..........................................................................................................................................................................................................4

PROGRAMMING G ROUP SELECTION:.................................................................................................................................................................5

SCALING................................................................................................................................................................................................................5

DECIMAL POINT:...................................................................................................................................................................................................5

HIGH SCALE:.........................................................................................................................................................................................................5

LOW SCALE:..........................................................................................................................................................................................................5

OFFSET:..................................................................................................................................................................................................................6

TARE: ..................................................................................................................................................................................................................... 6

PROGRAM LIMITS:...........................................................................................................................................................................................6

PROCESS LIMITS (1 THRU 4):..............................................................................................................................................................................6

SELECTION OF LIMIT 3 AS PROCESS OR RATE LIMIT:.....................................................................................................................................6

PROGRAMMING LIMIT 3:.....................................................................................................................................................................................6

As Process Limit: ............................................................................................................................................................................................6

As Rate Limit:..................................................................................................................................................................................................6

SELECTION OF LIMIT 4 AS PROCESS OR DEVIATION LIMIT :...........................................................................................................................7

PROGRAMMING LIMIT 4:.....................................................................................................................................................................................7

As Deviation Limit: .........................................................................................................................................................................................7

TIMERS 1 AND 2: ..................................................................................................................................................................................................7

RELAY DEADBAND:.............................................................................................................................................................................................7

CONFIGURING LIMITS NORMALLY OPEN/NORMALLY CLOSED: ................................................................................................................... 7

RELAY LATCHING/NON LATCHING:..................................................................................................................................................................7

AUDIO ALARM ON/OFF:......................................................................................................................................................................................8

PROGRAM SYSTEM: ........................................................................................................................................................................................8

DISPLAY OPTION:..................................................................................................................................................................................................8

FLASH TIME:.........................................................................................................................................................................................................8

ENGINEERING UNITS:..........................................................................................................................................................................................8

SETPOINT:..............................................................................................................................................................................................................8

RATE TIME-BASE: ................................................................................................................................................................................................ 9

REMOTE TARE/HOLD: ......................................................................................................................................................................................... 9

INPUT TYPE:..........................................................................................................................................................................................................9

INPUT RANGE:.......................................................................................................................................................................................................9

SET UP FLOW CHART:..................................................................................................................................................................................10

MAX. AND MIN. READINGS (PEAKS).....................................................................................................................................................11

DISPLAYING: ....................................................................................................................................................................................................... 11

RESETTING: ......................................................................................................................................................................................................... 11

RATE......................................................................................................................................................................................................................11

TIME.......................................................................................................................................................................................................................11

PROCESS CHANGE..........................................................................................................................................................................................12

OFFSET .................................................................................................................................................................................................................12

TARE......................................................................................................................................................................................................................13

LIMITS...................................................................................................................................................................................................................13

PROCESS LIMITS: ............................................................................................................................................................................................... 13

Displaying:.....................................................................................................................................................................................................13

Resetting:........................................................................................................................................................................................................13

TIMER LIMITS: .................................................................................................................................................................................................... 14

ALARM OUTPUTS............................................................................................................................................................................................14

STATUS: ............................................................................................................................................................................................................... 14

ELECTRO-MECHANICAL RELAY OPTION:......................................................................................................................................................14

Figure 1. Electro-mechanical Relays Hookup Example........................................................................................................................14

OPEN COLLECTOR O PTION............................................................................................................................................................................... 15

Figure 2. Open Collector Hookup Example...........................................................................................................................................15

HOLD FUNCTION.............................................................................................................................................................................................15

SAVING PARAMETER:..................................................................................................................................................................................15

POWER..................................................................................................................................................................................................................15

FIGURE 3. REAR VIEW OF DP3600 INSTRUMENT...........................................................................................................................16

OUTPUT CONNECTOR PIN ASSIGNMENT: .........................................................................................................................................16

TROUBLE SHOOTING ....................................................................................................................................................................................17

FACTORY DEFAULT SETTINGS FOR VOLTAGE , CURRENT AND MILLIVOLT:................................................................................................17

ERROR MESSAGES:............................................................................................................................................................................................17

MOUNTING .........................................................................................................................................................................................................18

SPECIFICATIONS

(typical @ 25 C and rated supply voltage unless otherwise specified). STANDARD INPUT:

* 4 - 20 MA, 10 - 50 MA, 0 - 5 VDC, 0 - 10 VDC EXTERNAL HOLD:

* An external low level signal applied to the HOLD pin on the rear connector will initiate hold function. ANALOG TO DIGITAL CONVERSION:

* 41/2 Digit A/D conversion. * Dual slope integrating converter. * Conversion Rate: seven conversions per second typical.

INPUT IMPEDANCE * 100 OHMS for 4-20 ma 40 ohms for 10-50 ma * 1 megohm for voltage input

POWER REQUIREMENTS (choice of three supply ranges): * 120 VAC -- 60Hz * 240 VAC -- 50Hz * 7.5 VDC -- 12VDC @ 900 ma

DIMENSIONS: * Case: 3.60" x 1.75" x 7" * Bezel size: 4.40" x 2.25" x 0.45" * Extruded Aluminum enclosure

DISPLAY: * Red 7-segment LED display, 0.39 inch (10mm) digit height. * Negative Polarity indication. * Over range indication: HELP. * Display Test: Briefly displays 8888 on power up.

RELAYS (optional): * Single pole double throw, 1 Ampere @ 28VDC or 0.5 amp @ 120VAC, resistive.

OPEN COLLECTOR: * Open collector drive: 5vdc @ 50ma each (maximum of six outputs)

SCALING: * Programmable from 1-30000 units

OFFSET: * Programmable from 0-30000 units

TARE:

• Programmable and is equal to the value of programmed scale.

DESCRIPTION

The DP3600 series of instruments are micro-processor based intelligent monitors that are capable of performing several tasks in addition to displaying the process variable. The micro-processor technology used in the system design has provided these instruments a cost and performance edge that is simply not possible with analog systems.

Various process parameters monitored by the system can be displayed by pushing appropriate keys on the front panel e.g. LMT1, Peak etc. The respective parameter will be displayed for as long as the key is kept pressed. Alternatively, if the key is pressed and then released, the monitor will display the particular parameter briefly and then go back to process variable display mode. Each key works either by itself or in combination with other keys to perform various functions.

The system has a warning mode where it displays 'HELP' any time a wrong key or sequence of keys is pressed. Also incase of over/under range the 'HELP' sign will be displayed constantly.

The system has six limit alarms, four for process and two timers. One of the four process limits can be figured to work as rate limit (LIMIT 3) while another process limit (LIMIT 4) can be programmed to work s deviation limit. All limit alarms can be operated in two different modes. The first one is non latching mode in which the relays reset automatically as soon as process, rate or deviation falls below the limit (minus the relay dead-band). The second one is latching mode. In this mode the relays will stay energized even after the parameter falls below the programmed limit. They can be reset manually only.

The very first thing required before monitoring the process would be to configure the personality of the unit to fit your particular application. This will allow the process variable to be read in a more comprehensible manner. Configuration is done by going into the SETUP mode and programming such parameters as SCALE, OFFSET, RELAY DEADBAND etc.

SET UP

Setup Entry:

To get into setup mode, press the TIME/SET UP key twice. This will get you into the setup mode and will be indicated by displaying of the message ‘ENTR PC’ (for ‘Enter PassCode’). At this point enter the pass

code for your system. The pass code entry, which is four digits long, keeps unauthorized personnel from changing system parameters. Each key is marked with a small digit in one of its corners. Pass-code is a

combination of these digits and for this system it is 3254. Three attempts at entering the correct pass-code are allowed. Any time a wrong digit is entered the display will read 'HELP'. If a person fails to enter correct

pass-code in three attempts, the system automatically exits SETUP mode. To try again, you have to get into the setup mode by pushing ‘SETUP’ key twice.

Setup Exit:

To exit SETUP mode at any point, simply push RESET key and hold it till display reads 'SAVING' (SAVING indicates that programmed parameters are being saved in Electrically erasable programmable read only memory -- EEPROM).

11. Audio Alarm On/Off

Programming Group Selection:

On entering correct passcode, setup procedure starts. The very first step will let you select one of the three groups of parameters that you can program. Three available groups are: 1) SCALING 2) PROGRAM LIMITS 3) PROGRAM SYSTEM. Each group will let you program various parameters as shown below:

SCALING

1. High Scale

2. Low Scale

3. Offset

4. Tare

Push ^v key to move from one programming group to the next. When a desired group is displayed, push SETUP key to select it.

PROGRAM LIMITS

1. Process Limit1

2. Process Limit2

3. Setup limt 3 for Rate/Process

4. Process Limit 3

5. Setup Limit4 for Process/Deviation

6. Process Limit 4

7. Timer 1 Limit

8. Timer 2 Limit

9. Deadband for limits

9. Limits Normally open/close (1 Thru 4)

10. Limits Latching/Non Latching

PROGRAM SYSTEM

1. Display Options

2. Flash Time

3. Engineering units

4. Program Setpoint

5. Remote Tare/Hold

6. Input Type

7. Input Range

SCALING

Decimal point:

Decimal point mode is indicated as ‘dp 9999’ (dp stands for DECIMAL POINT). Push ^v key to program decimal point. Each push on the ^v key moves the decimal point to the next position. After 9.999 the display

will go to 9999. When proper decimal point position has been obtained push SETUP key to go to the next mode.

High Scale:

High scale mode is indicated by a brief display of the message ‘HI SCLE’ followed by high scale value. The least significant digit (right most digit) will be flashing. The flashing indicates that pushing ^v key will increment or decrement that particular digit. Pushing ^v key once and holding it down will increment the

flashing digit. Releasing the ^v key and pushing it again immediately ( and then holding it in) will start decrementing the display. The desired number can be programmed by toggling the ^v key. To move to the next significant digit push <NXT> key, and to increment or decrement it, use ^v key. After obtaining a new high scale value (or to retain the current one) push SETUP key to get to the next mode.

Low Scale:

Low Scale mode is indicated by the display first flashing ‘LO SCLE’ and then the pre-programmed value of low scale. Again, to change the flashing digit value use ^v key. To change any other digit, use <NXT>

key to make that digit flash and then use ^v key to change its value. After obtaining a new value (or to retain the present value) push setup key. This will also get you into the next function.

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