MRC DFO-600 Manuale utente

3, Hagavish st. , Holon,Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529 mrc@mrclab.com

Operation Manual

Forced Convection Oven

DFO-600/DFO-720/DFO-1008/DFO-2160

3, Hagavish st. , Holon,Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529 mrc@mrclab.com

Contents

Description

Page

Specifications

2. Panel & key description

3. Operation

3.1 Setting the Temperature

3.2 Setting Timer

4. Setting parameter

4.1 Lockout

4.2 User Calibration

4.3 Auto-Tuning

5. Error code for temperature controller

6. Troubleshooting Guide

7. General Maintenance

8. Warranty

3, Hagavish st. , Holon,Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529 mrc@mrclab.com

1. Specifications

MODEL

SPECIFICATIONS

DFO-600

DFO-720

DFO-1008

DFO-2160

TEMP.RANGE

Ambient +40℃to 250℃

TEMP.ACCURACY

±0.1℃(LED Display) Uniform ±1.5~3℃

TEMP.CONTROL

PID Controller

TEMP.DISPLAY

LED Digital Display

TEMP.SENSOR

K TYPE

SAFETY DEVICE

EGO (DOUBLE TEMPERATURE PROTECTION)

TIMER

1 minute to 4553.6 minutes or continuous

VOLUME

600L

720L

1008L

2160L

SHELF

INNER SIZE

(WXDXH)

1000*600*1000

1200*600*1000

1400*600*1200

1800*1000*1200

OUTER SIZE

(WXDXH)

1250*750*1580

1450*750*1580

1650*750*1820

2000*1200*1980

WEIGHT(APPROX)

260KG

290KG

380KG

590KG

Power Voltage: 380V

3, Hagavish st. , Holon,Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529 mrc@mrclab.com

Panel & Key Description

GREEN INDICATOR

When the heater works the green indicator will blink.

POWER

When the power switch is pressed to ON, the oven system will start running

TEMPERATURE CONTROL

To set up the temperature, please refer to the related instruction of temperature

controller on next page

CONTINUE

Press the control switch to CONTINUE position. Then the status of oven is at a

continuous running

TIMER

If to set up running time is required, press the control switch to TIMER position,

and the running of the temperature control system will be controlled by time

period

LAMP

If the timer reaches the end, the lamp will be on, and the whole heating system

will stop output

3, Hagavish st. , Holon,Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529 mrc@mrclab.com

3. Operation

Temperature controller

Number

Key

Description / Function

①

For setting and calling up parameters.

②

To increase the value of digits.

③

To decrease the value of digits.

④

Revert /STOP/Restart Timer (For machine with timer useonly)

⑤

To display process value, menu symbol and error code.

⑥

To display set point value, parameter value or control output

value.

⑦

Process Unit Indicator- Celsius

⑧

ALM 123

Over-Heat Temperature. Lights on when the set temperature is over 5℃,

and turns off the heater.

⑨

OUT 1 2

Control output lamp 1.

Light on when heater is activated

⑩

MANU

Lamp flashes during Manual Mode operates

⑪

COMM

Communication indicator

⑫

TUNE

Lamp flashes during auto-tuning operates

⑬

Lock indicator

3, Hagavish st. , Holon,Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529 mrc@mrclab.com

3.1 Setting the Temperature

Turn on the temperature controller/power switch. The temperature displays light up and aftera few

seconds, the upper display shows the present value (PV) or chamber temperature. Thelower

display shows the set value (SV) or set temperature.

Press to increase temperature gradually.

Press to decrease temperature gradually.

Setting temperature upon what you need.

3.2 Setting Timer

Flip the switch to TIMER mode.

Press twice to turn on timer.

PV display d.TMR, and SV displays setting time (unit: minute/sec.)

Press to set time. After setting, press R key to make sure, then screen

returns to main menu (display temperature), all settings have been completed

When actual temperature reaches the setting temperature, timer will start counting.

When time out. Timer indicator LED lights.

3, Hagavish st. , Holon,Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529 mrc@mrclab.com

4 Setting parameter

The PV display indicates the parameter symbol, and the SV display indicates the selected valueof

the selected parameter.

4.1 Lockout

The parameters PASS (password) which will control the data security function, please do not

change it arbitrary to protect parameters safety.

Press several times scroll to the parameter PASS.

Set the PASS value to your desired function

PASS Value

Access Rights

= 1000

All parameters are changeable

= 1008

Only user menu parameters changeable (original value)

3, Hagavish st. , Holon,Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529 mrc@mrclab.com

4.2 User Calibration

Each unit is calibrated in the factory before shipment. The user can still modify the calibrationin

the field.

There are two parameters: Offset Low (OFTL) and Offset High (OFTH) for adjustment tocorrect

an error in the process value.

Press and hold the key until the setup Menu page is obtained.

Then, press key to scroll to the parameter.

Press key several times to scroll to the parameter OFTL to calibration low value. Send your

low signal to the sensor input of the controller, then press and releasethe key. If the process

value (the upper display) is different from the input signal, the user can use and to

change the OFTL value (the lower display) until the process value is equal to the value theuser

needs. Press and hold the key for 5 seconds to complete the low point calibration. A similar

procedure is applied for high scale calibration.

The two points OFTL and OFTH construct a straight line. For the purpose of accuracy, it isbest

to change the value same on the two points as possible.

4.3 Auto-Tuning

Instrument has been set the best PID value; we suggest executing auto-calculatingwhen

temperature is unstable. Enter auto-calculating:

Press and hold until appears on the display then release.

Press and hold at least 5 seconds. The TUNE indicator will begin to flash and

the auto-tuning procedure is beginning.

After the Auto-Tuning process is completed, the TUNE indicator will stop flashing andthe

unit will revert to PID control by using its new PID values. The PID values obtainedare

stored in nonvolatile memory.

Note: To enable auto-calculating the lock parameter should be set with 1000.

3, Hagavish st. , Holon,Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529 mrc@mrclab.com

5. Error code for temperature controller

Error Code

Display Symbol

Description & Reason

Corrective Action

ER04

Illegal setup values used: COOLis

used for OUT2 when DIRT

(cooling action) is used for OUT1, or when

PID mode is not used forOUT1 (PB =0

and/or TI=0)

Check and correct setup values of OUT2, PB1,

PB2,TI1, TI2 and OUT1, IF OUT2 is needed for

cooling control, the controller should use PID

mode(PB≠ 0 and TI≠0) and OUT 1 should use reverse

mode(heating action), otherwise, OUT2 cannotbe

used for cooling control.

ER10

Communication error : bad function

code

Correct the communication software to meetthe

protocol requirements.

ER11

Communication error : register

address out of range

Do not issue an over range address of register tothe

slave

ER14

Communication error : attempt to

write a read only data

Do not write a read only data or a protected datato the

slave.

ER15

Communication error : write a value

which is out of range to a register

Do not write an over range data to the slave register

EIER

Event Input Error: Two or moreevent

inputs are set to the same function

Do not set the same function in two or moreEvent

Input Function parameters (E1FN throughE6FN)

ATER

Auto-Tuning Error: Failed toperform

Auto-Tuningfunction

1. The PID values obtained after Auto- Tuning process

are out of range. RetryAuto-Tuning.

2. Do not change the set point value during

Auto-Tuning process.

3. Use manual tuning instead of Auto-Tuningprocess.

4. Do not set a zero value for TI.

5. Do not set a zero value forPB.

6.Touch RESET key

EEPR

EEPROM can't be writtencorrectly

Return to factory for repair.

CJER

Cold junction compensation for

Thermocouple malfunction

Return to factory for repair.

SBER

Input sensor break, or input current

below 1 mA if 4-20 mA is used,or input

voltage below 0.25V if 1 - 5Vis used

Replace inputsensor.

AADER

A to D converter orrelated

component(s) malfunction

Return to factory for repair.

3, Hagavish st. , Holon,Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529 mrc@mrclab.com

6. Troubleshooting Guide

Problem

Possible Cause

Remedy

Power switch is on, but display

temperature shows zeros or a value

that is clearly not theambient

temperature.

Temperature controller or temperature

sensor is defective.

Replace the temperature

controllersensor.

Power switch is on, but lamp doesnot

light.

Defective switch.

Replace.

Switch connection is bad

Push switchrepeatedly.

No power to switch.

Check wiring to switch and cable

plug connection.

Insufficientvoltage.

Check voltage outlet.

Fuse has jumped.

Check voltage, reset fuse.

Heater signal lamp does not lightafter

setting temperature withselector.

Chamber temperature is higher thanset

temperature.

Open door to cool.

Signal lamp is shorted.

Repair and change lamp.

Temperature controller is defective.

Replace.

Heater signal lamp lights, but

temperature does not rise.

Heater is disconnected or burnedout.

Check and replaceheater.

Problem with heater circuit.

Repair.

Problem with temperature controlcircuit.

Repair.

Solid state relay is defective.

Replace.

Heater signal lamp lights, butset

temperature cannotreach.

Over-temperature knob(thermostat)

setting is at or below the settemperature.

Turn the knob to increasethe

temperature.

Temperature continues to rise above

set point.

Temperature controller is

defective and high-limit

thermostat is set to high

Replace and make sure

thermostat is set 2-3°C abovethe

set temperature

Solid state relay is defective.

Temperature does not decrease when

the refrigeration switch is on

Compressor is not turning on.

Check compressor and thestarter.

Compressor is no, but there is nocooling.

Check refrigerant andrecharge.

Replace thecompressor.

Temperature fluctuates too much.

Temperature sensor is defective.

Replace.

Temperature is set too close to the ambient

temperature.

Operate at higher temperature,or

turn on thecompressor.

Temperature controller is defective.

Replace.

Circulating fan doesn’t turn.

Replace fan motor.

Controller needs auto-tuning.

Perform auto-tuning.

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