Omega Engineering DPS3301 Series Bedienungsanleitung

http://www.omega.com

mail: [email protected]

DPS3301

Series

Wall-Mount Programmable

Temperature Monitor

Page 2

SPECIFICATIONS.......................................................................................................................................................... 4

DESCRIPTION................................................................................................................................................................ 5

THERMOCOUPLE OR RTD SELECTION................................................................................................................. 5

HOW TO RESET AND PROGRAM THERMOCOUPLE TYPE (OR RTD).................................................................................. 6

FIGURE 1. THERMOCOUPLE/RTD SELECTION KEYS ..................................................................................................... 6

DISPLAY MODES........................................................................................................................................................... 6

RETAINING USER SETTINGS ON POWER DOWN................................................................................................ 7

DISPLAY UNITS C/F:.................................................................................................................................................... 7

SETPOINT DEVIATION: .............................................................................................................................................. 7

DISPLAY HOLD FEATURE: ........................................................................................................................................ 7

FLOW CHART ................................................................................................................................................................ 8

SETUP MODE................................................................................................................................................................. 9

ENTERING AND EXITING SETUP MODE:.......................................................................................................................... 9

HOW TO INCREASE/DECREASE PROGRAMMABLE VALUES IN SETUP .............................................................................. 9

PASSCODE ENTRY:.......................................................................................................................................................... 9

'PROGRAM CONTROLLER' MODE........................................................................................................................ 10

DISPLAY TIME............................................................................................................................................................... 10

DISPLAY OPTION:.......................................................................................................................................................... 10

RATE TIME-BASE:......................................................................................................................................................... 10

COLD JUNCTION ADJUSTMENT:..................................................................................................................................... 11

THERMOCOUPLE CALIBRATION:.................................................................................................................................... 11

THERMOCOUPLE TYPE SELECTION:............................................................................................................................... 12

‘PROGRAM LIMITS’ MODE:.................................................................................................................................... 12

PROCESS LIMITS (1 THRU 4):......................................................................................................................................... 12

SELECTION OF LIMIT 3AS PROCESS OR RATE LIMIT:..................................................................................................... 12

PROGRAMMING LIMIT 3: ............................................................................................................................................... 13

As Process Limit:...................................................................................................................................................... 13

As Rate Limit:........................................................................................................................................................... 13

SELECTION OF LIMIT 4AS PROCESS OR DEVIATION LIMIT:........................................................................................... 13

PROGRAMMING LIMIT 4: ............................................................................................................................................... 13

As Process Limit:...................................................................................................................................................... 13

As Deviation Limit:................................................................................................................................................... 13

CONFIGURE TIMING MODE............................................................................................................................................ 13

TIMERS 1AND 2: ........................................................................................................................................................... 14

RELAY DEADBAND:...................................................................................................................................................... 14

CONFIGURING LIMITS NORMALLY OPEN/NORMALLY CLOSED:.................................................................................... 14

RELAY LATCHING/NON LATCHING:............................................................................................................................... 14

AUDIO ALARM ON/OFF:................................................................................................................................................ 15

RATE............................................................................................................................................................................... 15

RATE ALARM:............................................................................................................................................................... 15

RESETTING RATE ALARM:............................................................................................................................................ 15

SETPOINT DEVIATION ALARM: ............................................................................................................................ 15

DEVIATION ALARM:...................................................................................................................................................... 16

RESETTING DEVIATION ALARM:................................................................................................................................... 16

PROCESS ALARMS..................................................................................................................................................... 16

DISPLAYING:................................................................................................................................................................. 16

Page 3

RESETTING:................................................................................................................................................................... 16

ELECTRO-MECHANICAL RELAY OPTION....................................................................................................................... 16

Figure 2. Electro-mechanical Relays Hookup Example........................................................................................... 17

OPEN COLLECTOR OPTION............................................................................................................................................ 17

Figure 3. Open Collector Hookup Example............................................................................................................ 17

TIMERS.......................................................................................................................................................................... 17

RESETTING TIMERS:...................................................................................................................................................... 18

TIMER MODES............................................................................................................................................................. 18

TIMER MODE #0............................................................................................................................................................ 18

TIMER MODE #1............................................................................................................................................................ 18

TIMER MODE #2............................................................................................................................................................ 18

ELAPSED TIME........................................................................................................................................................... 18

HOW TO RESET ELAPSED TIME...................................................................................................................................... 18

HIGH AND LOW PEAKS ............................................................................................................................................ 19

HOW TO RESET HIGH &LOW PEAK READINGS.............................................................................................................. 19

OUTPUT STATUS:........................................................................................................................................................ 19

POWER........................................................................................................................................................................... 19

SIGNAL CONNECTION.............................................................................................................................................. 19

OUTPUT CONNECTOR PIN ASSIGNMENT.......................................................................................................... 20

TABLE 1. OUTPUT CONNECTOR PIN ASSIGNMENT...................................................................................................... 20T

FIG 4. DPS3301 SERIES TERMINAL COMPARTMENT...................................................................................... 21

DIRECT INTERFACE TO UNIVERSAL RELAY MODULE................................................................................. 21

DIRECT INTERFACE TO UNIVERSAL RELAY MODULE................................................................................. 22

MOUNTING................................................................................................................................................................... 23

Page 4

SPECIFICATIONS

Typical @ 25 C and rated supply voltage unless otherwise specified.

INPUTS:

•Input types: J,K,T,E,R,S,B t/c, RTD, Voltage, Millivolt, Current & thermistor

•Cold junction compensation error: +/- 0.5C max (10C to 40C)

•Open thermocouple indication: ‘OPEN TC’ displayed

OPTIONS:

•240Vac @ 50 Hz Power Supply

•15Vdc @ 1000ma. Power Supply

•Open Collector output: 6 open collector transistors @ 50ma. sink each

•Relay output: 6 SPST 1 Amp. @ 28Vdc, 0.5 Amp. @ 120Vac (resistive load)

(for 220 Vac units only 0.25Amp.@ 240Vac (resistive load))

ACCURACY:

•Temperature resolution: 1 C/1 F, 0.1C for Thermistor

•0.1% of Full Scale (Base metal T/C), 0.5% others

ANALOG TO DIGITAL CONVERSION:

•4 1/2 Digit (20000 count) A/D conversion.

•Dual slope integrating converter.

•Conversion Rate: 7 /sec. typical

POWER REQUIREMENTS:

•120Vac, 0.2 Amp. @ 60 Hz

DIMENSIONS:

•Case: 7.55"W x 6.29"H x 4.05"D

•IP65 rated plastic enclosure

•Weight: 2.63 lb. (1.19kg.)

•Enclosure: All Plastic enclosure—IP65 Ingress Protection

DISPLAY:

•Red 7-segment LED display, 0.39 inch (10mm) digit height

•Negative polarity indication

•Out of range indication: HELP

•Display Test: Briefly displays 8.8.8.8.8.8.8. on power up

RELIABILITY:

•Calibration: NIST traceable

•Recalibration: Recommended at 12 months interval

Page 5

DESCRIPTION

Housed in a wall-mount, water-tight plastic enclosure, the DPS3301 Series is a powerful temperature

monitor/indicator. It accepts a single Thermocouple, RTD or Thermistor sensor input and then displays the

temperature in either degrees C or F. In addition, it also monitors a number of useful functions such as high

and low process readings, process run time, rate of process change etc.

Keys are appropriately labeled, so that the user would not have to memorize their functionality. A passcode

requirement keeps unauthorised personel from changing critical parameters such as limits, timers etc.

The DPS3301 also functions as a rate monitor, indicating instantaneous as well as average rate of

temperature change. Programmable time base allows the rate to be displayed in per second, minute, hour or

any other interval. Also, the unit can be programmed for a rate alarm. This allows control of a process if a

predetermined rate is exceeded or not achieved. The time function keeps track of process run time.

Maximum and minimum temperature readings are constantly tracked and can be helpful in quality control or

monitoring unattended processes (e.g. overnight).

Various process parameters monitored by the system may be displayed by pushing the appropriate keys on

the front panel, e.g. (Rate, Peak etc.). The respective parameter will be displayed as long as the key is kept

pressed. Alternately, if the key is pressed and then released, the unit will display a particular parameter

briefly and then go back to temperature display mode.

Four process alarms (optional) are also featured, which are programmable over the entire range of selected

input type. Also provided are two timers (optional) that work independently or in conjunction with process

limits e.g. turning on a fan ten minutes after limit 1 temperature is reached.

Process limit relays may be operated in two different modes:

1. Non-latching mode, in which the relays reset automatically as soon as the temperature

falls below the limit (minus the relay dead-band).

2. Latching mode, in which the relays stay energized even after the temperature falls below

the programmed limit. In this mode the relays will stay on until manually reset.

THERMOCOUPLE OR RTD SELECTION

DPS3301 instruments ordered for Thermocouples or RTD’s can be programmed through the front panel keys

to work with one of these specific inputs (Input type or options depend on Model number ordered).

When DPS3301 is first turned on, a ‘display segment test’ is done by briefly displaying 8.8.8.8.8.8.8.,

followed by the software revision number (rEn X.XX) and input signal type.

Input type Display shows:

J (R,S,B, rtd 385, Thermistor, J tC (r, S, B, rtd 385, tHrStor,

Millivolt, Voltage, Current) Lo VoLt, HI VoLt, CurrEnt)

K (rtd 392) Cr.AL tC (rtd 392)

T t tC

E EtC

Factory default thermocouple/RTD selection can be obtained as explained below:

Page 6

How to Reset and Program Thermocouple Type (or RTD)How to Reset and Program Thermocouple Type (or RTD)

A DPS3301-TC that is calibrated for a J, K, T, or E type thermocouple or an RTD model may be

programmed for a specific thermocouple, or RTD (385/392) type, by going into SETUP mode (Look under

‘SETUP’). Alternately, a thermocouple/RTD may be selected by turning On

A DPS3301-TC that is calibrated for a J, K, T, or E type thermocouple or an RTD model may be

programmed for a specific thermocouple, or RTD (385/392) type, by going into SETUP mode (Look under

‘SETUP’). Alternately, a thermocouple/RTD may be selected by turning On power to the unit while holding

in the appropriate key (see Figure 1). This procedure also clears the memory and programs factory defalult

values for limits, rate timebase etc. Therefore, after performing Power-up reset, various parameters such as

limits, rate time base etc., must be re-programmed to a desired value. However, if done in SETUP mode, no

programmed parameters such as limits, Timers etc. are erased from the memory. It is recommended that

thermocouple (RTD) selection be done in SETUP. Power-up reset should be performed if it is suspected that

program memory may have been corrupted due to power surge, noise on electrical lines etc.

FIGURE 1. Thermocouple/RTD Selection Keys KEY Input Type Selected

HI/LO J (R, S or B , RTD 385)

Thermistor

C/F K (RTD 392)

ALARM T

TIMER E

RESET Memory cleared – no

factory default values

. programmed.

NOTE: All keys, except RESET, clear

memory and program necessary factory

default values. RESET key clears memory

only and programs no default values.

However, previous thermocouple type is

retained.

DISPLAY MODES

E t/c

Memory Clear only T t/c

K t/c, RTD392,

Thermisto

J (R, S or B) t/c,

RTD385

The DPS3301 can be programmed to display in any one of the following modes:

Mode Display Description

PROCESS PrOCESS Displays process value.

SETPOINT DEVIATION SP. DEVN Displays setpoint deviaition.

INSTANTANEOUS RATE In. rAtE Displays Instantaneous rate value.

PROCESS HIGH Pr. HIGH Displays process’ highest reading

PROCESS LOW Pr. LO Displays process’ lowest reading

ELAPSED TIME ELPSd. T Displays elapsed time.

TIMER 1 COUNT DOWN tr1. Cnt Display Timer 1 count down value

TIMER 2 COUNT DOWN tr1. Cnt Display Timer 2 count down value

SCAN SCAn Scans through all the above parameters

Page 7

SEE SETUP ON HOW TO SELECT ONE OF THE DISPLAY MODES.

RETAINING USER SETTINGS ON POWER DOWN

DPS3301 saves all the programmed parameters in an EEPROM (electrically erasable programmable read

only memory). An EEPROM stores the programmed parameters even when the power is removed from the

unit. However, it is important to note that if the parameters are being changed during setup, they must be

saved in the EEPROM by pressing and holding the ‘RESET’ key (till SAVING is displayed) as described

under SETUP. If parameters are NOT saved and the power is removed from the unit, any newly changed

values will be lost ( the unit will, however, maintain the old values).

DISPLAY UNITS C/F:

DPS3301 units can display temperature in either degrees

Centigrade of Fahrenheit. To switch the display from Fahrenheit

to Centigrade or vice versa, simply push the C/F key once. The

display will read ‘dEGrE F’ if the unit enters degrees Fahrenheit

mode. It will display ‘dEGrE C’ if Centigrade mode is enabled.

Following the message, the unit will start displaying temperature

in selected engineering units.

SETPOINT DEVIATION:

A useful feature of DPS3301 units is tracking of a setpoint

relative to process value at any given point in time. To display

deviation, push the key labeled ‘SP DEV’ once. The display will

read ‘SP DEVN’ following which the deviation reading will be

shown. A second push on the same key while it is displaying

deviation will indicate the current setpoint value.

Setpoint value that needs to be tracked can be entered in two

different ways. One is during setup mode and the other is using

the front key labled ‘SP DEV’. SETUP mode entry is used when

a particular value needs to be programmed e.g. 500, 850 and so

on. To enter Setpoint in this mode, look under ‘SETUP’.

If it is desired to start tracking setpoint deviation from current process reading then front key entry mode is

used. Assume that current reading on the display is 476 F. To enter this temperature as your setpoint, first

push ‘SP DEV’ key twice (first push displays deviation from current setpoint, and the second push displays

current SETPT value). After the second push keep holding in the ‘SP DEV’ key. After a brief delay the

display will flash the message ‘SETPT’ three times. Following the third flash, the unit will take the current

process reading and save it as the new SETPOINT. If the process reading is 500, then taking our above

example, pushing ‘SP DEVN’ key will display 24 as your deviation value. Note that if ‘SP DEVN’ key is

released before three flashes of ‘SETPT’ message, the unit will not enter a new setpoint. However, old

setpoint value will be retained in the memory.

DISPLAY HOLD FEATURE:

DPS3301 offers a display hold feature. When ever pins 13 and 14 are shorted together (e.g. through a remote

switch), the reading taken at the time of shorting is frozen on the display. The unit will continue displaying

this value until the short is removed. This is indicated by the display periodically flashing the message ‘Pr

HoLD’. Internally the unit keeps monitoring the actual process and limits and timers will be activated if

process exceeds their programmed values. However, the display will indicate the hold temperature.

Page 8

FLOW CHART

PROGRAM

CONTROLLER

Back to

SETUP

COLD JUNCTION

CALIBRATION

INPUT

CALIBRATION

DISPLAY TIME

DISPLAY OPTION

a. Process

b. Setpt Devn.

c. In. Rate

d. Process High

e. Process Low

f. Elapsed Time

g. Timer 1 Count

h. Timer 2 Count

i. Scan all

RATE

TIMEBASE

INPUT

SIGNAL TYPE

SETPT

PROGRAM LIMIT2

Configure Limit3 as

Process or Rate

PROGRAM LIMIT3

PROGRAM LIMIT4

Select Timer Modes

0,1 or 2

PROGRAM TIMER1

PROGRAM TIMER2

PROGRAM LIMIT1

Configure Limit4 as

Process or Deviation

Limit1 Normally open

or closed

RELAY DEADBAND

Limit4 Normally open

or closed

Limit3 Normally open

or closed

Limit2 Normally open

or closed

Limits Latching or

Non-Latching

Audio Alarm ON or

OFF

PROGRAM LIMITS

SETUP

Back to

SETUP

Page 9

SETUP MODE

Setup is used for configuring various parameters of DPS3301 unit.

These parameters include entering limits, timers, dead-bands etc.

Entering and Exiting Setup Mode:

To get into setup mode, press and hold SETUP key. The display will

show ELPSd t and then the value of elapsed time. Keep holding-in

‘SETUP’ key till the display shows ‘SETUP’ and starts scrolling the

message 'EntEr PASSCOdE'.

To return from SETUP to normal display/run mode, simply push and

hold down the ‘RESET’ key. On exiting, the display will briefly show

'SAVING' to indicate that the new data is being saved in nonvolatile

memory (key should be held in until the word ‘SAVING’ shows up on

the display). Setup mode is also exited automatically if no key action is

detected for about 5 minutes. On automatic exit, all the changes made

up to that point are saved in the permanent memory.

How To Increase/Decrease Programmable Values in

Setup

Once a parameter is displayed (e.g. 01234), the ‘^DIG v’ key can then be used for increasing or decreasing

the value of the flashing digit. For incrementing, push and hold in ‘^DIG v’ key. To decrement, release

‘^DIG v’ key and immediately push it (and hold in) again. To move on

to the next digit, push ‘<DIG>’ key till the desired digit starts flashing.

Again, use ‘^DIG v’ key to change its value.

Passcode Entry:

Passcode entry is a four digit number which keeps unauthorized

personnel from changing the unit’s parameters. Front panel keys are

each marked with a small digit in the lower right corner. For the five

keys there are five digits --- 1,2,3,4,5. Pass-code is a combination of

these digits and for DPS3301 units the pass-code to program new

parameters is 3254. Three attempts at entering the correct pass-code are

allowed. Anytime a wrong digit is entered, the display will read HELP.

If correct pass-code is not entered within three attempts, the system will

exit SETUP and return to normal display mode. To make another attempt,

you have to get into setup again by holding in ‘SETUP’ key.

As soon as correct four digit pass-code is entered, the unit is ready for

setup. At this point the unit will display ‘PrG Ctr’ (for 'Program

Controller'). Available options at this point are:

1. PrG Ctr (for 'Program Controller’) 2. PrOG Lt (for 'Program

Limits')

‘PROGRAM CONTROLLER’ MODE

The unit starts with 'Program Controller’ as the active mode (displaying

PrG Ctr). To select alternate mode, push ‘^DIG v’ key. Once the

desired mode is displayed, push ‘SETUP’ key to select it.

Page 10

'PROGRAM CONTROLLER' MODE

Display Time

On entering Program Controller mode, the very first step lets you

program is the display time. This determines the length of time (in

seconds) that any VALUE is displayed before message, such as

‘PROCESS’ is flashed.

The unit will first show 'dSPLy t' (for Display Time), and then the

current setting in seconds. Use ‘^DIGv’ and ‘<DIG>’ key to set the

desired display time. Push ‘SETUP’ key following the selection.

Display Option:

This is indicated by the display briefly reading 'dSP OPt' (for

display option) and then the currently selected Option. Use ‘^DIGv’

key to step thru various options. Once the desired option has been

selected, push ‘SETUP’ key to enter it and go on to set Display Time.

Display Mode Display shows Description

PROCESS PrOCESS Displays process value.

SETPOINT DEVIATION SP. DEVN Displays setpoint deviaition.

INSTANTANEOUS RATE In. rAtE Displays Instantaneous rate value.

PROCESS HIGH Pr. HIGH Displays process’ highest reading

PROCESS LOW Pr. LO Displays process’ lowest reading

ELAPSED TIME ELPSd. T Displays elapsed time.

TIMER 1 COUNT DOWN tr1. Cnt Display Timer 1 count down value

TIMER 2 COUNT DOWN tr1. Cnt Display Timer 2 count down value

SCAN SCAn Scans through all the above parameters

Rate Time-Base:

This step is for programming time-base for calculation of Rate. Units

of time-base are seconds. Again, the active digit will be flashing.

Message displayed before the value is “rATE tb:. To change the

value, push ^v key. To activate another digit for change, use <DIG>

key. On finishing, push SETUP key.

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