Julabo MA-4, MA-6, MA-12 Instruction Manual

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Page 1

English

Operating Manual

Heating Circulators

MA-4 MA-6 MA-12 MA-26

JULABO GmbH 77960 Seelbach / Germany Tel. +49 (0) 7823 / 51-0 Fax +49 (0) 7823 / 24 91

info.de@julabo.com www.julabo.com

1.951.0347-V3 03/16

19510347-V3.doc 01.03.16

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Operating manual

Temperature control devices for research and industry are developed,

9001

Congratulations!

You have made an excellent choice. JULABO thanks you for the trust you have placed in us. This operating manual has been designed to help you gain an understanding of the operation and possible applications of our circulators. For optimal utilization of all functions, we recommend that you thoroughly study this manual prior to beginning operation.

The JULABO Quality Management System

produced, and distributed according to the requirements of ISO and ISO 14001. Certificate Registration No. 01 100044846

Unpacking and inspecting

Unpack the circulator and accessories and inspect them for possible transport damage. Damage should be reported to the responsible carrier, railway, or postal authority, and a damage report should be requested. These instructions must be followed fully for us to guarantee our full support of your claim for protecting against loss from concealed damage. The form required for filing such a claim will be provided by the carrier.

Printed in Germany Changes without prior notification reserved

Important: keep original operating manual for future use

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TABLE OF CONTENTS

Operating manual .......................................................................................................... 5

1. Intended use .......................................................................................................... 5

1.1. Description ......................................................................................................... 5

2. Operator responsibility – Safety recommendations ............................................... 6

2.1. Disposal .............................................................................................................. 8

2.2. Warranty conditions ............................................................................................ 8

2.3. EC Conformity .................................................................................................... 9

2.4. Technical specifications ................................................................................... 11

Operating instructions .................................................................................................. 13

3. Safety notes for the user ...................................................................................... 13

3.1. Explanation of safety notes .............................................................................. 13

3.2. Explanation of other notes ............................................................................... 13

3.3. Safety recommendations ................................................................................. 13

4. Operating controls and functional elements ......................................................... 16

4.1. Circulator .......................................................................................................... 16

5. Preparations ......................................................................................................... 18

5.1. Installation ........................................................................................................ 18

5.2. Bath fluids ......................................................................................................... 18

5.3. Temperature application to external systems .................................................. 20

5.3.1. Tubing ...................................................................................................... 20

5.4. Filling / draining ................................................................................................ 21

5.5. Countercooling ................................................................................................. 22

6. Operating procedures .......................................................................................... 24

6.1. Power connection ............................................................................................. 24

6.2. Switching on / Start – Stop ............................................................................... 24

6.2.1. Switching on the circulator ....................................................................... 24

7. Setting of temperatures ............................................................................ 25

7.1. 1-setpoint mode / Direct setting of temperatures ............................................. 25

7.2. Using the pre-setting in the menu ........................................................ 25

Safety installations, warning functions ..................................................... 27

8.1. Excess temperature protection ........................................................................ 27

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Operating manual

8.1.1. Early warning system, low level protection .............................................. 28

8.2. Switch-over from warning to shutdown function .............................................. 29

8.3. Over and Sub temperature warning function ................................................... 30

9. Menu functions ......................................................................................... 31

9.1. MENU PUMP – Setting of pump pressure ....................................................... 32

9.2. MENU Configuration ........................................................................................ 33

9.2.1. Configuration of the mode of the key ........................................... 34

9.2.2. Remote control: activate – deactivate ...................................................... 34

9.2.3. Automatic / non-automatic start mode ..................................................... 34

9.2.4. Reset - Factory setting ............................................................................. 35

9.3. MENU Control parameters – Xp, Tv, Tn .......................................................... 35

9.4. MENU SERIAL - BAUDRATE, PARITY, HANDSHAKE .................................. 37

9.5. MENU ATC - Absolute Temperature Calibration ............................................. 38

9.5.1. ATC STATUS - YES / NO ........................................................................ 40

9.5.2. ATC - TYPE: 1 -/ 2 -/ 3 POINT ................................................................. 40

9.5.3. Example: 3-point calibration for internal control ...................................... 41

9.6. MENU LIMITS .................................................................................................. 43

10. Troubleshooting guide / error messages ............................................................. 44

11. Electrical connections .......................................................................................... 46

12. Remote control ..................................................................................................... 47

12.1. Setup for remote control .............................................................................. 47

12.2. Communication with a PC or a superordinated data system ....................... 47

12.3. List of commands ......................................................................................... 48

12.4. Status messages ......................................................................................... 49

12.5. Error messages ............................................................................................ 49

13. JULABO Service – Online remote diagnosis ....................................................... 51

14. Cleaning / repairing the unit ................................................................................. 52

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JULABO circulators are not suitable for direct temperature control of foods,

bath medium (bath fluid).

PID2

ATC

RS232

PUMP

SMART

temperatures to ensure an accurate temperature pattern at the selected spot

independent from the control circuit. This protection can be

The pump capacity (electronically adjustable via the motor speed) enables to

Operating manual

1. Intended use

JULABO circulators have been designed to control the temperature of specific fluids in a bath tank.

The units feature pump connections for temperature control of external systems (loop circuit).

semi-luxury foods and tobacco, or pharmaceutical and medical products. Direct temperature control means unprotected contact of the object with the

1.1. Description

 The circulators are operated via the splash-proof keypad. The implemented

microprocessor technology allows to set and to store different values that can be indicated on the MULTI-DISPLAY (LED). Three menu keys facilitate adjusting setpoints, warning and safety functions and menu functions.

 The PID temperature control adapts the heat supplied to the thermal

requirements of the bath.

 Absolute Temperature Calibration (ATC3) provides a high temperature

stability in the bath. With the 3-point calibration an offset is adjusted at three

in the bath over the full temperature range.

 Electrical connections:

The serial interface RS232 allows modern process technology without additional interface. Alarm output for external alarm message or control of JULABO refrigerating baths or solenoid valve (cooling water).

 The excess temperature protection conforming to IEC 61010-2-010 is a

safety installation indicated and set on the MULTI-DISPLAY (LED).

 The early warning system for low level signals that bath fluid needs to be

refilled before the low level protection conforming to IEC 61010-2-010 causes a complete shut-down of the main functional elements.



adapt to varying conditions for internal and external temperature applications.

 The circulator conforms to the relevant requirements specified by European

guidelines.

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Operator responsibility – Safety recommendations

2. Operator responsibility – Safety recommendations

The products of JULABO ensure safe operation when installed, operated, and maintained according to common safety regulations. This section explains the potential dangers that may arise when operating the circulator and also specifies the most important safety precautions to preclude these dangers as far as possible.

 The operator is responsible for the qualification of the personnel operating the units.  The personnel operating the units should be regularly instructed about the dangers

involved with their job activities as well as measures to avert these dangers.

 Make sure all persons tasked with operating, installing, and maintaining the unit have read

and understand the safety information and operating instructions.

 When using hazardous materials or materials that could become hazardous, the circulator

may be operated only by persons who are absolutely familiar with these materials and the circulator. These persons must be fully aware of possible risks.

If you have any questions concerning the operation of your unit or the information in this manual, please contact us!

Contact JULABO GmbH

Gerhard-Juchheim-Strasse 1 77960 Seelbach / Germany

Tel. +49 (0) 7823 / 51-0 Fax +49 (0) 7823 / 24 91 info.de@julabo.com www.julabo.com

Safety instructions for the operator:

 You have received a product designed for industrial use. Nevertheless, avoid strikes to the

housing, vibrations, damage to the operating-element panel (keypad, display), and contamination.

 Make sure the product is checked for proper condition regularly (depending on the

conditions of use). Regularly check (at least every 2 years) the proper condition of the mandatory, warning, prohibition and safety labels.

 Make sure that the mains power supply has low impedance to avoid any negative effects

on instruments being operated on the same mains.

 This unit is designed for operation in a controlled electromagnetic environment. This

means that transmitting devices (e.g., cellular phones) should not be used in the immediate vicinity. Magnetic radiation may affect other devices with components sensitive to magnetic fields (e.g., monitors). We recommend maintaining a minimum distance of 1 m.

 Permissible ambient temperature: max. 40 °C, min. 5 °C.  Permissible relative humidity: 50% (40 °C).  Do not store the unit in an aggressive atmosphere.  Protect the unit from contamination.  Do not expose the unit to sunlight.

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Appropriate operation

Only qualified personnel is authorized to perform configuration, installation, maintenance and repairs of the circulator. Routine operation can also be carried out by untrained personnel who should however be instructed by trained personnel.

Use: The bath can be filled with flammable materials. Fire hazard!

There might be chemical dangers depending on the bath medium used. Observe all warnings for the used materials (bath fluids) and the respective instructions (safety data sheets). Insufficient ventilation may result in the formation of explosive mixtures. Only use the unit in well ventilated areas.

Only use recommended materials (bath fluids). Only use non-acid and non corroding materials.

When using hazardous materials or materials that could become hazardous, the operator

must affix the enclosed safety labels (1 + 2) to the front of the unit so they are highly visible:

Particular care and attention is necessary because of the wide operating range. There are thermal dangers: Burn, scald, hot steam, hot parts and surfaces that can be touched.

Observe the instructions in the manuals for instruments of a different make that you connect to the circulator, particularly the respective safety recommendations. Also observe the pin assignment of plugs and technical specifications of the products.

Warning label W00: Colors: yellow, black Danger area. Attention! Observe instructions. (operating manual, safety data sheet)

Mandatory label M018: Colors: blue, white Carefully read the user information prior to beginning operation. Scope: EU

Semi S1-0701 Table A1-2 #9 Carefully read the user information prior to beginning operation. Scope: USA, NAFTA

Warning label W26: Colors: yellow, black

Hot surface warning. (The label is put on by JULABO)

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Operator responsibility – Safety recommendations

municipal waste is not permitted!

2.1. Disposal

The circulator contains a back-up battery that supplies voltage to memory chips when the unit is switched off. Do not dispose of the battery with household waste! Depending on battery regulations in your country, you might be obliged to give back used or defect batteries to gathering places. The product may be used with oil as bath fluid. These oils fully or partially consist of mineral oil or synthetic oil. For disposal, observe the instructions in the safety data sheets.

Valid in EU countries See the current official journal of the European Union – WEEE directive. Directive of the European Parliament and of the Council on waste electrical and electronic equipment (WEEE). This directive requires electrical and electronic equipment marked with a crossed-out trash can to be disposed of separately in an environmentally friendly manner. Contact an authorized waste management company in your country. Disposal with household waste (unsorted waste) or similar collections of

2.2. Warranty conditions

JULABO GmbH warrants its products against defects in material or in workmanship, when used under appropriate conditions and in accordance with appropriate operating instructions

for a period of ONE YEAR.

Extension of the warranty period – free of charge

With the ‘1PLUS warranty’ the user receives a free of charge extension to the warranty of up to 24 months, limited to a maximum of 10 000 working hours.

To apply for this extended warranty the user must register the unit on the JULABO web site www.julabo.com, indicating the serial no. The extended warranty will apply from the date of JULABO GmbH’s original invoice.

JULABO GmbH reserves the right to decide the validity of any warranty claim. In case of faults arising either due to faulty materials or workmanship, parts will be repaired or replaced free of charge, or a new replacement unit will be supplied.

Any other compensation claims are excluded from this guarantee.

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2.3. EC Conformity

Page 10

Operator responsibility – Safety recommendations

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2.4. Technical specifications

Open Bath Circulators

MA-4

MA-6

MA-12

MA-26

Working temperature range

°C

20 ... 200

Temperature stability

°C

±0,01

Bath opening (WxL)

13x15

22x15

22x30

Bath depth

Filling volume from ... to

liters

3 ... 4,5

4,5 ... 6

7,5 ... 12

18 ... 26

Overall dimensions (WxDxH)

21x42x38

21x43x42

30x43x45

36x61x45

Weight

9,6

12,5

13,0

26,0

Mains power connection

V; Hz

208 - 230; 50/60 (perm. range)

Current draw (at 208V)

A 8 Current draw (at 230V)

A 9 Mains power connection

V; Hz

100 - 115; 50/60 (perm. range)

Current draw (at 100V)

A 8 Current draw (at 115V)

9 MA

Temperature selection

digital

via keypad indication on

MULTI-DISPLAY(LED)

remote control via personal computer

indication on monitor

Temperature indication

MULTI-DISPLAY (LED)

Resolution (-9.99 …. +99.99 = 0.01)

°C

0.01 / 0.1

Absolute Temperature Calibration

°C

±3 Temperature control

PID

Heater wattage (at 230 V)

2,0

Electronically adj. pump capacity

stages

1 ... 4

Flow rate max.at 0 bar

l/min

11 ... 16

Pressure max. max. at 0 l

bar

0.23 ... 0.45

Electrical connections:

External alarm device

Vdc/mA

24-0 / max. 25

Computer interface

RS232

Ambient temperature

°C

5 ... 40

All measurements have been carried out at: rated voltage and frequency operating temperature: 70 °C ambient temperature: 20 °C bath fluid: water Technical changes without prior notification reserved.

Heater wattage (at 115V) kW 1,0

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Operator responsibility – Safety recommendations

Caution:

Safety installations according to IEC 61010-2-010:

Excess temperature protection adjustable from 0 °C ... 230 °C

Low liquid level protection float switch

Classification according to DIN 12876-1 class III

Supplementary safety installations

Early warning system for low level float switch

High temperature warning function optical + audible (in intervals)

Low temperature warning function optical + audible (in intervals)

Supervision of working sensor plausibility control

Reciprocal sensor monitoring between working and safety sensors difference >35 K

Alarm message optical + audible (permanent)

Warning message optical + audible (in intervals)

Environmental conditions according to IEC 61 010-1: Use only indoor. Altitude up to 2000 m - normal zero. Ambient temperature: +5 ... +40 °C

Air humidity: Max. rel. humidity 80 % for temperatures up to +31 °C, linear decrease down to 50 % relative humidity at a temperature of +40 °C

Max. mains fluctuations of ±10 % are permissible.

Protection class according to IEC 60 529 IP21

The unit corresponds to Class I

Overvoltage category II

Pollution degree 2

Standards for interference resistance according to EN 61326-1 This unit is an ISM device classified in Group 1 (using high frequency for internal purposes) Class A (industrial and commercial range).

The unit is not for use in explosive environment

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In addition to the safety warnings listed, warnings are posted throughout the

Read and follow these important instructions for averting dangers.

Warning:

Caution:

dangerous situation. If this is not avoided, slight or minor

Notice:

anything in its surroundings can be damaged.

Note!

Important!

This icon is used in the operating instructions to indicate flashing values or

Follow the safety instructions to avoid personal injury and property damage.

• Only connect the unit to a power socket with an earthing contact (PE –

material.

Operating instructions

3. Safety notes for the user

3.1. Explanation of safety notes

operating manual. These warnings are designated by an exclamation mark inside an equilateral triangle. “Warning of a dangerous situation (Attention! Please follow the documentation).” The danger is classified using a signal word.

Describes a possibly highly dangerous situation. If these instructions are not followed, serious injury and danger to life could result.

Describes a possibly injuries could result. A warning of possible property damage may also be contained in the text.

Describes a possibly harmful situation. If this is not avoided, the product or

3.2. Explanation of other notes

Draws attention to something special.

3.3. Safety recommendations

Indicates usage tips and other useful information.

parameters which have to be set or confirmed.

Also, the valid safety instructions for workplaces must be followed.

protective earth)!

• The power supply plug serves as a safe disconnecting device from the line and must always be easily accessible.

• Place the unit on an even surface on a base made of nonflammable

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Safety notes for the user

• Do not stay in the area below the unit.

source before performing any service or maintenance procedures, or before

caution when touching these parts.

Caution:

• Make sure you read and understand all instructions and safety precautions listed in this manual before installing or operating your unit.

• Set the excess temperature safety installation at least 25 °C below the fire point of the bath fluid.

• Observe the limited working temperature range when using plastic bath tanks.

• Never operate the unit without bath fluid in the bath.

• Pay attention to the thermal expansion of bath oil during heating to avoid

overflowing of the fluid.

• Prevent water from entering the hot bath oil.

• Do not drain the bath fluid while it is hot!

Check the temperature of the bath fluid prior to draining (e.g., by switching the unit on for a short moment).

• Use suitable connecting tubing.

• Avoid sharp bends in the tubing, and maintain a sufficient distance from

surrounding walls.

• Make sure that the tubing is securely attached.

• Regularly check the tubing for material defects (e.g., for cracks).

• Never operate damaged or leaking units.

• Always turn off the unit and disconnect the mains cable from the power

moving the unit.

• Always turn off the unit and disconnect the mains cable from the power source before cleaning the unit.

• Always empty the bath before moving the unit.

• Transport the unit with care.

• Sudden jolts or drops may cause damage in the interior of the unit.

• Observe all warning labels.

• Never remove warning labels.

• Never operate units with damaged mains power cables.

• Repairs are to be carried out only by qualified service personnel.

 Some parts of the bath tank and the pump connections may become

extremely hot during continuous operation. Therefore, exercise particular

The temperature controlling i.e. of fluids in a reactor constitutes normal circulator practice.

We do not know which substances are contained within these vessels. Many substances are:

• inflammable, easily ignited or explosive

• hazardous to health

• environmentally unsafe

i.e.: dangerous

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determine the method of decontamination.

screwdriver for example.

The user alone is responsible for the handling of these substances!

The following questions shall help to recognize possible dangers and to reduce the risks to a minimum.

• Are all tubes and electrical cables connected and installed? Note: sharp edges, hot surfaces in operation, moving machine parts, etc.

• Do dangerous steams or gases arise when heating? Is an exhaust needed when working?

• What to do when a dangerous substance was spilled on or in the unit? Before starting to work, obtain information concerning the substance and

Notice: Check the safety installations at least twice a year!

• Excess temperature protection according to IEC 61010-2-010. With a screwdriver turn back the adjustable excess temperature protection until the shut-down point (actual temperature).

• Low level protection according to IEC 61010-2-010. To check the function of the float, it can be manually lowered with a

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Operating controls and functional elements

4. Operating controls and functional elements

4.1. Circulator

Front view Rear view

Navigation keys

Mains power switch, illuminated

1. Key: >OK< Start / Stop (pump / heater )

2. >OK< in the menu Menu item / select submenu for setting Save set value Save selected parameter A beep signals the end of setting

After the actions Start, Stop and change from VFD Display to standard display the key is locked for a short time.

The above graph “front side” shows an example for standard display.

1. Key: >Return< Stop (pump / heater )

2. >Return< in the menu one menu level down Correction function for parameters or values (prior to OK)

immediately back to standard display

- icon for „keep key pressed down“.

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2. >Up/Down< in the menu selection of menu items / parameters

10 MULTI-DISPLAY (LED) temperature indication, menu indication 11 Control indicator –Heating

12 Control indicator – Cooling (without function)

13 Control indicator – Alarm

Socket: control cable of JULABO refrigerated circulator

RS232

Interface RS232: remote control via personal computer

18 Mains circuit breakers (resettable) 15 A

Menu keys

1. Key: >Up / Down <temperature – increase/decrease setpoint Push key quickly for single steps, Keep key pressed for fast change.

Key: start the menu > warning and safety values<

Key: start the menu >temperature setpoints<

Key: display of MENU structure

Navigation aids

Flashing segments show the position within the structure of the menu. Item „P“ flashes simultaneously in the submenu.

Adjustable excess temperature protection according to IEC 610102-010

or output for alarm messages

Mains power cable with plug

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Preparations

• Place the circulator in an upright position.

Caution:

corrosion in the bath, even in stainless steel.

Bath fluid

Temperature range

soft/decalcified water

5 °C to 80 °C

5. Preparations

5.1. Installation

• Place the unit on an even surface on a pad made of non- flammable material

5.2. Bath fluids

Carefully read the safety data sheet of the bath fluid used, particularly with regard to the fire point! If a bath fluid with a fire point of ≤65 °C is used, only supervised operation is possible.

Water: The quality of water depends on local conditions.

• Due to the high concentration of lime, hard water is not suitable for temperature control because it leads to calcification in the bath.

• Ferrous water can cause corrosion - even on stainless steel.

• Chloric water can cause pitting corrosion.

• Distilled and deionized water is unsuitable. Their special properties cause

Recommended bath fluids:

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JULABO Description

Thermal G

Thermal M

Thermal HS

Order Number

10 liters

8 940 124

8 940 100

8 940 102

5 liters

8 940 125

8 940 101

8 940 103

Temperature range

°C

-30 ... 80

40 ... 170

20 ...250

Flash point

°C

284

270

Fire point

°C

306

>360

Color

light yellow

clear

light brown

JULABO Description

Thermal H10

Thermal H20S

Thermal H200

Order Number

10 liters

8 940 114

8 940 108

8 940 134

5 liters

8 940 115

8 940 109

8 940 135

Temperature range

°C

-20 ... 180

0 ... 220

60 ...200

Flash point

°C

190

230

292

Fire point

°C

216

274

334

Color

clear

light brown

clear

• No liability for use of other bath fluids!

JULABO bath fluids

See website for list of recommended bath fluids.

ATTENTION: The maximum permissible viscosity is 50 mm2 /s

Caution:

Fire or other dangers when using bath fluids that are not recommended:

Please contact JULABO before using other than recommended bath fluids. Use only nonacidic and noncorrosive bath fluids.

JULABO assumes no liability for damage caused by the selection of an unsuitable bath liquid. Unsuitable bath fluids are fluids which, e.g.,

• are highly viscous (much higher than recommended at the respective working temperature)

• have a low viscosity and have creep characteristics

• have corrosive characteristics or

• tend to crack.

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Preparations

(24a) with the cap nut.

Order No. Length

Temperature range

8 930 008 1 m

CR® tubing 8 mm inner dia.

-20 °C to 120 °C

8 930 010 1 m

CR® tubing 10 mm inner dia.

-20 °C to 120 °C

8 930 108 1 m

Viton tubing 8 mm inner dia.

-50 °C to 200 °C

8 930 110 1 m

Viton tubing 10 mm inner dia.

-50 °C to 200 °C

8 930 410 1 m

Insulation for tubing 8 mm or 10 mm inner dia.

-50 °C to 100 °C 8 970 480

2 tubing clamps. size 1, tubing 8 mm inner dia.

8 970 481

2 tubing clamps. size 2, tubing 10 or 12 mm inner dia.

8 930 209 0.5 m

8 930 214 3.0 m

Metal tubing, triple insulated,

-100 °C to +350 °C

8 930 220 0.5 m

8 930 223 3.0 m

Metal tubing, insulated, M16x1 *

-50 °C to +200 °C

*) Adapter for metal tubing M10x1 on M16x1 Order No. 8 970 444

5.3. Temperature application to external systems

Caution: Securely attach all tubing to prevent slipping.

If the circulator is operated without external system, close the pump connector

The circulator is used for temperature application to external, closed systems (loop circuit) with simultaneous temperature application in the circulator bath.

Connecting the external system

• Unscrew the collar nuts from the pump connector (24a).

• Slide the tubing onto the pump connector for feed (24a)

  feed return

and return flow (24b) and secure with hose clamps.

5.3.1. Tubing

Recommended tubing:

8 930 210 1.0 m 8 930 211 1.5 m

M16x1 *

8 930 221 1.0 m 8 930 222 1.5 m

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Warning: Tubing:

• Preventive maintenance: Replace the tubing from time to time.

protection.

At high working temperatures the tubing used for temperature application and cooling water supply represents a danger source. A damaged tubing line may cause hot bath fluid to be pumped out within a short time. This may result in:

• Burning of skin

• Difficulties in breathing due to hot atmosphere

Safety recommendations

• Employ suitable connecting tubing.

• Make sure that the tubing is securely attached.

• Avoid sharp bends in the tubing, and maintain a sufficient distance from

surrounding walls.

• Regularly check the tubing for material defects (e.g. for cracks).

5.4. Filling / draining

Notice:

Pay attention to the thermal expansion of bath oil during heating to avoid overflowing of the liquid. Do not drain the bath fluid while it is hot! Check the temperature of the bath fluid prior to draining (by switching the unit on for a short moment, for example).

Always turn off the unit and disconnect the mains cable from the power source before cleaning the unit, or before moving the unit.

Store and dispose the used bath fluid according to the laws for environmental

Page 22

Preparations

location where the unit is operated.

A M P

25a 25b

Filling

Take care that no liquid enters the interior of the circulator.

• Recommended maximum filling level with water as bath fluid: 30 mm below the tank rim

• Recommended maximum filling level with bath oils: 40 mm below the tank rim

 After filling, immerse the samples in the bath or place the lid

on the bath, in case the opening is not to be used.

 The circulator provides an early warning system for low level

that may be triggered when changing samples in the bath.

Draining

• Turn the unit off with the mains switch.

• Place the heating circulator near the rim of the table. Use a

suitable vessel as recipient for the bath fluid.

5.5. Countercooling

Notice:

Securely attach all tubing to prevent slipping.

Observe the laws and regulations of the water distribution company valid in th

• Unscrew the drain plug on the front of the bath tank to drain the bath.

For applications near the ambient temperature, the cooling coil must be connected to the water mains.

• Using tubing, connect the cooling coil (25a) to the tap water supply, and lead the tap water in a sink through the return connector (25b).

 A specific water flow rate of 100 ml/minute is sufficient to

compensate for the characteristic temperature.

 For applications near ambient temperature (20 °C), the

cooling water temperature should at least be 5 °C below the working temperature

Page 23

RS 232

JULABO MVS

25a

25b

Order No. Description

NOTE: Immersion coolers are used for countercooling instead of tap water in NOTE: Flow-through cooler

9 790 000 MVS controller 8 980 700 Solenoid valve

By installing the MVS controller (26) and a solenoid valve (27), sudden temperature increases can be rapidly reversed by tap water flowing through the built-in cooling coil. For applications requiring constant near-ambient temperature, tap water is thus only used in small amounts.

The circulator provides the necessary control pulse via the connector (15).

Cooling coil connectors (25a, 25b)

applications below room temperature. Order No. Description 9 650 820 FT200 9 650 840 FT400 8 970 400 Clamp for cooler probe for stainless steel or plexiglass bath tanks

Order No. Description 9 655 825 FD200 The FD200 is suitable as cooling device for liquids in closed circuits (loops). This unit is integrated in the return flow circuit from the external system connected to a circulator, and continuously withdraws heat from the liquid.

Page 24

Operating procedures

Caution:

• We disclaim all liability for damage caused by incorrect line voltages!

Check to make sure that the line voltage matches the supply voltage specified on the identification plate.

The LED -DISPLAY indicates the message "OFF".

6. Operating procedures

6.1. Power connection

• Only connect the unit to a power socket with earthing contact (PE –

6.2. Switching on / Start – Stop

protective earth)!

• The power supply plug serves as safe disconnecting device from the line and must be always easily accessible.

• Never operate equipment with damaged mains power cables.

• Regularly check the mains power cables for material defects (e.g. for

cracks).

6.2.1. Switching on the circulator

Switching on:

• Turn on the mains power switch (1).

 The unit performs a self-test. All segments of the 4-digit MULTI-

DISPLAY (LED) and all indicator lights will illuminate. Then the software version (example: tt 2, V1.12, b004)) appears. The display „OFF“ or „R OFF“ indicates the unit is ready to operate.

 The circulator enters the operating mode activated before

switching the circulator off: keypad control mode (manual operation) or

remote control mode (operation via personal computer).

Start:

• Press key. The actual bath temperature is displayed on the LEDDISPLAY. The circulating pump starts with a slight delay.

Stop:

 Press key.

Keep key pressed.

Page 25

7. Setting of temperatures

the circulator switches to the

The end of the adjustment is signalled by the flashing message

 The temperatures can be set in start or stop mode.

70 °C

3 different working temperatures can be adjusted. Their values are

The function of the key is configurable.

1. If the key is pressed, normally only one adjustable working temperature is displayed (factory setting).

2. Using the Menu Configuration which is started by pressing the

key a menu with three pre-set setpoints can be

assigned to the key.

 Press key if a value is to be retained.

7.1. 1-setpoint mode / Direct setting of temperatures

The circulator uses the setpoint of t1 or t2 or t3 for temperature control.

The indicated setpoint temperature can be changed directly any time.

Example: change 25.00 °C to 50.00 °C

1. By pressing the key

active >Setpoint< in the example on the left > t1 25.00°C<. The integer digits flash (example: <25>).

2. Change the value by pressing the keys and to

50.00 °C and confirm by pressing the key . The decimal digits flash and can be adjusted if desired.

Confirm once more by pressing the key.

>t1<

 If the „Up / Down“ keys are pressed immediately

instead of pressing the key this is called direct temperature setting.

 The circulator uses the new working temperature value for

temperature control.

7.2. Using the pre-setting in the menu

Factory setting:

Press the key to call up the menu for temperature setting.

25 °C

37 °C

freely adjustable with the working temperature range.

Important:

Prior to the adjustment switch-over to the 3-temperature mode has to be effected in the menu configuration.

Page 26

Setting of temperatures



Refer to page 34 for switch-over to 3-temperature-mode

CFG = CONFIGURATION

3SP = 3 SETPOINT

Setting of working temperature in the menu

1. Press the key . The value >tx< flashes

2. Select SETPOINT >t 1< or >t 2< or >t 3< using the key or .

3. Confirm by pressing the key.

 The circulator uses the new working temperature value for

temperature control.

Example: setting / adjustment of of pre-settings of "t 3"

1. Press the key. The parameter >tx< flashes.

2. Select the setpoint >t3< by pressing or .

3. Keep the key pressed until the integer digits flash .

(example: <70>)

4. Change the value by pressing and to 85.00 °C and confirm by pressing the key.

The decimal digits flash and can be adjusted if desired. Confirm once more by pressing the key.

Example on the left: SETPOINT >t3< / 85.00. The end of the adjustment is signaled by the flashing message >t3<

 If the active setpoint (SETPNT) is changed, the new value is

immediately used for the control of the working temperature. The heater control indicator flashes.

 If the other two setpoints (not activated for control) are changed

the MENU has to be left by pressing the key after the decimal digits have been confirmed

Notice: Refer to chapter

9.6. MENU LIMITS

Page 27

Set the new shutdown value within 30 seconds using a

Warning:

8.1. Excess temperature protection

Safety installations, warning functions

Check the safety installations at least twice a year! Refer to ( page 15)

Settings for the excess temperature protection > tSA< and for the warning functions for high > tHi< and low > tLo< temperature are made in a menu which is called up by pressing the key .

Menu item > Aty (ALARM-TYPE)< allows choosing between a warning and an alarm cut-off for the menu items > tHi < and >tLo<.

This excess temperature protection is independent of the control circuit. When activated heater and circulating pump are completely shut down. The alarm is indicated by optical and audible signals (continuous tone) and the error message "ALARM-CODE 14" appears on the MULTI-DISPLAY (LED)

Setting range: 20 °C ... 230 °C

 Rough setting can be effected by using the temperature scale.

Exact setting:

1. Press the key to display menu > tSA <.

2. Press the key and the set shutdown value is indicated.

screwdriver. The value is indicated on the MULTI-DISPLAY (LED) Example: >tSA< / 100 °C

The excess temperature protection must be set at least 25 °C below the fire point of the bath fluid used! In case of wrong setting there is a fire hazard! We disclaim all liability for damage caused by wrong settings!

Recommendation: Set the excess temperature protection at 5 °C to 10 °C above the working temperature setpoint.

Page 28

Safety installations, warning functions

Warning:

8.1.1. Early warning system, low level protection

For refill always use the same bath fluid type that is already in the bath. Bath oils must not contain any water contaminants and should be pre-heated to the actual bath temperature! Explosion hazard at higher temperatures!

This low level protection is independent of the control circuit and is divided in two sections.

(patented)

1. Switch in stage 1 recognizes a defined

fluid level .

An audible warning (interval tone) sounds and on the MULTI-DISPLAY (LED) the message "E 40" appears. Refill bath fluid!

2. Switch in stage 2 recognizes a low fluid level .

If stage 2 of the low level protection device (according to IEC 61010-2-010) is triggered, a complete shutdown of the heater and circulating pump is effected. A continuous alarm tone sounds and a message >CODE 01< appears on the MULTI-DISPLAY (LED).

Turn off the unit with the mains switch, refill bath fluid and turn the unit on again!

3. Float

4. Circulating pump

5. Heater

Page 29

Factory setting:

8.2. Switch-over from warning to shutdown function

If a shutdown of functional elements (e.g. heater, circulating pump) is required when the limit values are exceeded or undercut the circulator can be changed over from warning function >WARNING< to shutdown function >ALARM<.

>0 = WARNING<

1. Press the key .

2. Select the menu >Aty (ALARM-TYPE)< by pressing the key.

3. Press the key and the set parameter will flash . (Example: 0)

4. Change the parameter by pressing the key and confirm by pressing the key.

or press the key if the parameter is to retained.



Setting >0 = WARNING< A mere warning function with optical and audible warning signal (interval tone) A message appears on the MULTI-DISPLAY (LED):

or OVERTMP SUBTEMP

• Setting >1 = ALARM<

Temperature limit with shutdown of heater and circulating pump. An audible alarm sounds (continuous tone) and a message appears on the MULTI-DISPLAY (LED):

or OVERTMP SUBTEMP

Page 30

Safety installations, warning functions

8.3. Over and Sub temperature warning function

Factory settings:

Over temperature t High 205 °C

Sub temperature t Low -55 °C

If the observance of a working temperature value >t 3< has to be supervised for a sensitive temperature application, then set over and sub temperature warning values. In the example below the setpoint >t 3< 85 °C is surrounded by the values >t High< 87 °C and >t Low< 83 °C. The electronics immediately register if the actual temperature breaches one of the set limit values. The resulting reaction is defined in the menu item >Aty (ALARMTYPE)< refer to (page 29).

1. Press the key .

2. By pressing the or or > tLow <.

3. Press the key. The integer digits flash.

4. Change the values to 87. °C and/or 83. °C by pressing the

and

The decimal digits flash and can be adjusted if desired. Confirm once more by pressing the key.

See above examples.

key and confirm with the key.

key select the menu > tHigh <

 The warning functions are only activated if the actual bath

temperature remains within the set limit values for 3 seconds after switch-on.

Recommendation:

Set the over temperature warning value > t High < 5 °C to 10 °C above the working temperature setpoint.

Set the sub temperature warning value > t Low < 5 °C to 10 °C below the working temperature setpoint.

Page 31

 Menu level 1



9. Menu functions





The term „Menu functions“ refers to settings such as

>Pu< - Electronically adjustable pump capacity page 32

>CFG< - Configuration of the unit page 33

>3SP< - 3-setpoint mode

>rt< - REMOTE – on / off (remote control via RS232)

>Aut < – AUTOSTART on / off

>rST< - RESET – factory settings

PID Control parameters page 35

Control parameter XP

Control parameter Tn

Control parameter Tv



 ATC



Adjustable interface parameters page 37

>br< - Baudrate

>Pty< - Parity

>HS< - Handshake

• ATC - Absolute Temperature Calibration page 37

>Sta< - ATC status >tyP< - Type >1. point<, >2. point < or >3. point < calibration

2 values per calibration point

ttx = Defined temperature value of the calibration point. This value is automatically stored with >Ctx< and can be indicated for control purposes. Ctx = The „Calibration value“ is determined with a temperature measuring device and stored under menu item > Ctx <.

Limitations of temperature page 43

>SPHigh< - Maximum setpoint

>SPLow< - Minimum setpoint

Page 32

Menu functions

The pump flow is pre-adjusted in the factory and can be

(for small bath tanks)

9.1. MENU PUMP – Setting of pump pressure

The capacity of the circulating pump is set by adjusting the motor speed

Factory setting: stage 1

Settings: stage 1 ... 4

Flow rate: 11 ... 16 l/m Pump pressure: 0,22 ... 0,45 bar

1. Press the key. Menu >Pu< is indicated.

2. Press the key. The set parameter flashes (example: > 2<)

3. Change the parameter by pressing or and confirm by pressing the key.

or Press the key if the parameter is to be retained.

modified to suit user requirements.

• Using a screwdriver turn the screw (1) anti-clockwise by 360 °.

• Using flat pliers turn the marking of the slide (2) to the desired position.

 Tighten the screw.

Examples: Internal applications in the bath

A 100 % internal bath circulation

(for large bath tanks)

B Reduced internal bath circulation

(for smooth surface of bath fluid)

External/internal applications

C 40 % external discharge,

60 % internal circulation (for large bath tanks)

D 80 % external discharge,

20 % internal circulation

Page 33

9.2. MENU Configuration

Menu level 1



Level 2 Parameter level



CFG = MENU CONFIGURATION

 A RESET can be effected only in the > < mode.

Switch off circulator by pressing the key and call up the menu CONFIGURATION.

 Press the key if a parameter is to be

retained. Correction function for parameters and values (prior to OK).

>3SP< - Switch on and off the 3-setpoint mode

 The parameter flashes, set by pressing

 >YES< - This function can be used by pressing

the key. (refer to page 25)

>rt< - Switch on and off remote control

• The parameter flashes, set by pressing



 For remote control refer to 46

 Connect RS232 with PC

>Aut< - Switch on and off autostart

• The parameter flashes, set by pressing

+ AUTOSTART on AUTOSTART off.

See WARNING page 35

>rSt< (RESET) - Use this to reset all values to factory setting.

• Return to factory settings by pressing  During the message – init - all parameters are

reset to factory settings.

Page 34

Menu functions



Notice:

switch or using a timer.

9.2.1. Configuration of the mode of the key

Pressing the key normally indicated only one working

Factory setting: no

9.2.2. Remote control: activate – deactivate

Factory setting: OFF

temperature which can be individually adjusted.

The configuration opens a menu with 3 setpoints which can be preset.

>no< 1-temperature mode >YES< 3-temperature mode

The circulator is to be prepared for remote control by a personal computer via the serial interface RS232: Set the menu item >>rt< = remote< from >OFF< to >On<.

9.2.3. Automatic / non-automatic start mode

>OFF< No remote control via RS232

>On< Remote control via RS232

The display changes from

keypad control mode (manual operation) to

remote control mode (operation via personal computer).

AUTOSTART on.

AUTOSTART off.

The circulator has been configured and delivered by JULABO in accordance with the NAMUR recommendations. This means for the start mode that the unit must enter a safe operating status after a power failure. This safe operating status is indicated by the message „OFF“ or „r OFF“ on the MULTI-DISPLAY (LED). A complete, all-pole shutdown of the main functional elements such as heater and pump motor is effected. The values set on the circulator remain saved and the unit is restarted by pressing the start/stop key in manual control. In remote control mode the values need to be resent by the PC via the interface. If such a safety standard is not required, the NAMUR recommendations can be bypassed with the AUTOSTART function thus allowing a direct start of the circulator by pressing the mains

Page 35

Warning:

Take care to fully observe the safety and warning functions of the circulator.



For supervised or unsupervised operation with the “AUTOSTART“ function avoid any hazardous situation to persons or property

9.2.4. Reset - Factory setting

>YES< resets all values to factory setting.

 A >rSt< RESET can be effected in the > < mode only.

Switch off the circulator by pressing the key and call up the menu CONFIGURATION.

 During the message – init - all parameters are reset to factory

settings

9.3. MENU Control parameters – Xp, Tv, Tn

Menu level 1

Level 2 Parameter level

In most cases the control parameters preset in the factory are adequate for achieving an optimum temperature sequence. The control parameters allow adjustment to special control processes..

Press the key if a parameter is to be retained. Correction function for parameters or values (prior to OK)

Proportional range >Xp<



0.1 … 99.9



3 … 9999

• The parameter flashes, switch by pressing

Reset time >Tn< (Integral component)

• The parameter flashes, switch by pressing

and

Lead time >Tv< (Differential component)



0 … 999

• The parameter flashes, switch by pressing

and

Page 36

Menu functions

Optimum setting

Control parameters XP-, TN-, TV- INTERNAL as

Xp too low

Tv/Tn too low

Xp too high or Tv too high

Tv/Tn too high or Xp too high

Setting range:

0.1 ... 99.9

Setting range: 3 ...9999

Setting range: 0 ... 999

Proportional range >Xp<

The proportional range is the range below the setpoint in which the control circuit reduces the heating capacity from 100% to 0 %

Reset time >Tn< (Integral component)

Compensation of the remaining control deviation due to proportional regulation. An insufficient reset time may cause instabilities. Excessive reset times will result in unnecessary prolongation of compensation of the control difference.

Lead time >Tv< (Differential component)

The differential component reduces the transient time. An insufficient lead time will prolong the time required for compensation of disturbance effects and cause high overshooting during run-up. An excessive lead time could cause instabilities (oscillations)

Optimization instructions for the PID control parameters

Inappropriate settings may produce the following heat-up curves:

well as -EXTERNAL

The heat-up curve reveals possible faulty settings of the control parameter.

Page 37

Protocol RTS/CTS (Hardware handshake)

9.4. MENU SERIAL - BAUDRATE, PARITY, HANDSHAKE

Menu level 1



Level 2 Parameter level



For communication between circulator and a PC or a superordinated process control system the interface parameters of both units must be identical.

Factory settings: 4800 Baud even hardware handshake

 Press the key if a parameter is to be

retained.

>br< - BAUDRATE

• The parameter flashes, switch by pressing

and

4.8 = 4800 Baud

9.6 = 9600 Baud

19.2 = 19200 Baud

38.4 = 38400 Baud

>PtY< - PARITY



• The parameter flashes, switch by pressing

and

0 no: Datenbits = 8; Stopbits = 1 1 odd: Datenbits = 7; Stopbits = 1 2 even: Datenbits = 7; Stopbits = 1

>HS< - HANDSHAKE

• The parameter flashes, switch by pressing

and

Xon/Xoff-protocol (Software handshake)

Page 38

Menu functions

ATC serves to compensate a temperature difference that might occur

°C

T 1

°C

T 1

°C

B (INT)

TT = Temperature on circulator

orrection function for parameters or

9.5. MENU ATC - Absolute Temperature Calibration

Example: 1-point calibration

3-point calibration

between circulator and a defined measuring point in the bath tank because of physical properties.

Principle: For ATC calibration, in steady state the bath temperature at the location of the temperature sensor (CT) is determined at the respective adjusted working temperature. This value is then set on the circulator in the menu >ATCalibration< under menu item >Ctx<. This can be a 1-point, 2-point or 3-point calibration.

M = Temperature measuring instrument with temperature sensor B = Bath tank (INTernal or EXTernal) T = circulator

TT 1 = Original curve

CT = Temperature on measuring point

Menu level 1



Level 2 Parameter level

 Press the key if parameter is to be

retained. C values (prior to OK).

>StA< - ATC Status



• The parameter flashes, switch by pressing

and

 >NO< Carry out an ATC calibration  >YES< return to standard operation after

calibration.

Page 39

>tYP< - ATC TYPE



• The parameter flashes, switch by pressing

and

 A >1-point<, >2-point< or >3-point<



calibration can be carried out.

The value > tt1< is only indicated

 In addition the measured temperature value

>Ct 1< is saved during the next step.

• Integer digits flash, set by pressing



• Decimal digits flash, set by pressing

 If only a 1-point calibration is carried out, the following menu items

are not indicated anymore

The value > tt2< is only indicated



 In addition the measured temperature value

>Ct 2< is saved during the next step.

• Integer digits flash, set by pressing



• Decimal digits flash, set by pressing

 If only a 2-point calibration is carried out, the following menu items

are not indicated anymore

The value > tt3< is only indicated



 In addition the measured temperature value

>Ct 3< is saved during the next step.

• Integer digits flash, set by pressing



• Decimal digits flash, set by pressing

Page 40

Menu functions

9.5.1. ATC STATUS - YES / NO

9.5.2. ATC - TYPE: 1 -/ 2 -/ 3 POINT

In the second submenu the ATC function for the temperature sensor selected above is activated >YES< or deactivated >NO<.

>YES< (factory setting) The controller of the circulator uses the

original curve of the temperature sensor or the new curve measured during the ATC calibration.

Important: Set to >NO< during the calibration process

>NO< An ATC calibration is to be carried out.

Important: Set to >YES< after calibration.



In the > ATC STATUS < >YES< the ATC calibration always affects the current working temperature; also the one set via interface.

A >1-point<, >2-point< or >3-point< calibration can be carried out.

First geometrically define the location for calibration (measuring point CT), then determine the temperature values of the calibration points. The type of calibrations also determines the number of the following pairs of values indicated on the MULTI-DISPLAY (LED)..

Pairs of values:

tt X: Circulator temperature 1 or 2 or 3 (actual value TT )

The actual temperature of the bath is simultaneously saved with the “calibration value“ >CALVAL< and can be indicated for control purposes (value does not flash).

Ct X: Calibration temperature 1 or 2 or 3 (actual value CT )

The „calibration value“ is determined with a temperature measuring device and saved under menu item >CALVAL<.

(value flashes )

Page 41

temperatures



Level 2

Parameter level

and .

A >3-point< calibration is carried out.

9.5.3. Example: 3-point calibration for internal control

In the temperature range from 80 °C to 160 °C the calibration curve of

the temperature sensor (TT) is to be adjusted to the actual at measuring point (CT).

80.00 °C

120.00 °C

160.00 °C

1. Set working temperature setpoint :

Refer to „Direct temperature setting “ page 25

1. By pressing the key or the circulator switches to the active >SETPOINT< see example on the left: >t1 25.00°C<.

The integer digits flash (Example: <25>).

2. Change the value to 80.00 °C by pressing the keys and and

confirm by pressing the key . The decimal digits flash.

Confirm once more by pressing the key .

3. The bath is heated up. Wait for approx. 5 minutes until the temperature is constant.

2. Reading of temperature measuring device

Read the value of measuring point CT on the device and enter under menu item >Ct X< by using the keypad.

>Ct 1< (79.70 °C) >Ct 2< (119.5 °C) >Ct 3< (159.3 °C)

3. Calibration

Menu level 1

 Press the key if parameter is to be retained. Correction

function for parameters or values (prior to OK).

 Setting is required only for the first calibration point.



An ATC calibration is to be carried out. Set to >no<

The parameter flashes, switch by pressing

• The parameter flashes, switch by pressing and .

Page 42

Menu functions

The first of 3 points is calibrated.

Return to 1. Set working temperature value: 120.00 °C

Return to 1. Set working temperature value: 160.00 °C

The 3-point calibration is completed

(Standard operation)



The value >tt1< is only indicated

Setting >Ct 1< by using the keys.

• Integer digits flash, set by pressing (79) +

• Decimal digits flash, set by pressing (70) +

The value >tt2< is only indicated

Setting >Ct 2< by using the keys.

• Integer digits flash, set by pressing (119) +

• Decimal digits flash, set by pressing (5) +

The second of 3 points is calibrated.



The value >tt3< is only indicated

Setting >Ct 3< by using the keys.

4. Return to standard operation

• Integer digits flash, set by pressing

• Decimal digits flash, set by pressing

• Set >YES< after calibration.

(159) +

(3) +

Page 43



key if parameter is to be retained.

orrection function for parameters or values (prior

to OK).

9.6. MENU LIMITS

Menu level 1

Level 2 Parameter level

Factory settings::

200 °C

(Setpiont High)

>Li< = LIMITS – limitation of operating temperature range Maximum and minimum setpoint

Restriction of the adjustable temperature range.



The limitation of the operating temperature range effects the

temperature setting in the menu with the key .

Only setting of working temperatures which lie within the determined limits is possible

This applies to settings in the MENU ,

Press the C

• Integer digits flash, set by pressing

• Decimal digits flash, set by pressing

• Integer digits flash, set by pressing

• Decimal digits flash, set by pressing

-50 °C

(Setpoint Low)

(refer to page 25) and for settings in the MENU high temperature low temperature

(refer to page 30)

The temperature values are automatically deferred into the limit range.

Setting range: -50,0 °C ... +200,0 °C

Page 44

Troubleshooting guide / error messages

(LED).

Repair by authorized JULABO service personnel.

Reconnect the control line or repair short-circuit.

Excess temperature warning

Type of warning: set to >0 = warning< or >1 = alarm<

Low temperature warning

Typ of warning: set to >0 = warning< or >1 = alarm<

•

Defect of working or excess temperature protector.

10. Troubleshooting guide / error messages

Alarm with complete shutdown:

If one of the following failures occur a complete, all-pole shutdown of the heater and circulating pump is effected.

+

„ “ lights up and a continuous signal sounds. The code for the cause of alarm is indicated on the MULTI-DISPLAY

Warning without a complete shutdown of the unit The MULTI-DISPLAY (LED) indicates the cause for the warning in form

of a code and an acoustic signal sounds in regular intervals. These messages appear every 10 seconds.

Press the key

Low level alarm The circulator is operated without or insufficient bath fluid.

Switch the unit off with the mains switch, refill bath fluid and switch on! Tube breakage has occurred (insufficient filling level of bath fluid caused

by pumping-out) Replace the tubing and refill bath liquid.

The float is defect (e.g. transport damage).

to stop the signal

During the self-test after switch-on a short –circuit is detected between pin 2 and pin 4 of the control line or the control line was disconnected during operation.

or Excess temperature alarm

or Low temperature alarm.

• Cable of working temperature sensor is disconnected or shortcircuited.

Working temperature sensor and excess temperature protector report a temperature difference of more than 35 K.

Other errors Internal hardware error – call service

Page 45

Set the protection temperature to a higher value.

short-circuited

1545

4 s

dealer.

protected by an electronic current

A M P

Error in A/D converter

Excess temperature protector defect. The protection temperature is below the set working temperature

setpoint.

The cable of the excess temperature protector has been disconnected

The early warning system for low level reports a critical fluid level. Refill bath fluid.

By quickly switching off and restarting the unit the alarm is cancelled. If the error occurs once more after the restart, a remote diagnosis is required.

„Configuration Error“ The configuration of the circulator does not correspond with its current application.

Press the key for a non-recurring, automatic change of the configuration. In this case please call the JULABO Technical Service or an authorized

Disturbances that are not indicated.

The electronic pump motor is overloadlimiter. If viscosity of the bath fluid is or becomes too high, the motor stops running.

Mains circuit breakers (resettable) 15 A

Page 46

Electrical connections

operation (e.g. cellular phones).

1 3

5 Cooling pulse

for remote control of the circulator.

9 6

RS232 interface cable

Pin 8 CTS ⇔ Pin 7 RTS

8 980 073

RS232 interface cable 9-pol./9-pol. , 2,5 m

8 900 110

USB interface adapter cable

11. Electrical connections

Notice:

Use shielded cables only. The shield of the connecting cable is electrically connected to the plug housing. The unit ensures safe operation if connecting cables with a maximum length of 3 m are used. The use of longer cables does not affect proper performance of the unit, however external interferences may have a negative impact on safe

/ Control output

The connector may be used for control of JULABO refrigerated circulators or as output for alarm messages.

RS232 serial interface

RS232C

Circuit: Operation = relay powered Alarm = relay not powered

Pin assignment: Pin Signal

1 +24 V (I max. current 25 mA) 2 0 V 3 Alarm relay 4 Reserved - do not use!

This port can be used to connect a computer with an RS232 cable

Pin assignments RS232: Pin 2 RxD Receive Data

Pin 3 TxD Transmit Data Pin 5 0 V Signal GND Pin 7 RTS Request to send Pin 8 CTS Clear to send

Pin 1; 4; 6, 9 Reserved - do not use!

Circulator (9-pol) PC (9-pol) Pin 2 RxD ⇔ Pin 3 TxD Pin 3 TxD ⇔ Pin 2 RxD Pin 5 GND ⇔ Pin 5 GND Pin 7 RTS ⇔ Pin 8 CTS

Accessories: Order No. Description

Page 47

9 6

Like all parameters which can be entered through the keypad,

turned off.

If the circulator is put into remote control mode via the configuration

A transfer sequence consists of:

The out commands are valid only in remote control mode.

Response from the circulator: 55.5↵

12. Remote control

12.1. Setup for remote control

• Check the interface parameters for both interfaces (on circulator and PC) and make sure they match.

RS232C

(Serial interface refer to page 37.)

• In the menu >CFG< (Configuration) set the menu item >rt< (Remote) to >ON< . (refer to page 34).

• Connect both units with an interface cable.

12.2. Communication with a PC or a superordinated data system

interface parameters are stored in memory even after the circulator is

level, the MULTI-DISPLAY (LED) will read „r OFF“ = REMOTE STOP. The circulator is now operated via the computer. In general, the computer (master) sends commands to the circulator (slave). The circulator sends data (including error messages) only when the computer sends a query.

In remote control mode, the start command and all values to be set must be resent by the PC via the interface in case of a power interruption. AUTOSTART is not possible.

• command

• space (

; Hex: 20)

⇔

• parameter (decimal separation with a period)

• end of file (↵; Hex: 0D)

The commands are divided into in and out commands. in commands: retrieve parameters out commands: set parameters

Command to set the working temperature > t 1< to 55.5 °C

out_sp_00 ⇔ 55.5↵

Command to retrieve the working temperature > t 1< in_sp_00↵

Page 48

Remote control

version

None

Number of software version (V X.xx)

status

none

Status message, error message (see page 49 )

out_mode_01

Use working temperature >t 1<

out_mode_01

Use working temperature >t 2<

out_mode_01

Use working temperature >t 3<

out_mode_05

Stop the unit = R –OFF-.

out_mode_05

Start the unit.

out_sp_00

xxx.xx

Set working temperature. „t 1“

out_sp_01

xxx.xx

Set working temperature. „t 2“

out_sp_02

xxx.xx

Set working temperature. „t 3“

out_sp_03

xxx.xx

Set high temperature warning limit „t High“

out_sp_04

xxx.xx

Set low temperature warning limit „t Low“

out_sp_07

Set the pump pressure stage. (1 ... 4)

out_par_06

xxx

Xp control parameter of the internal controller.

out_par_07

xxx

Tn control parameter of the internal controller.

out_par_08

xxx

Tv control parameter of the internal controller.

in_pv_00

none

Actual bath temperature.

in_pv_01

none

Heating power being used (%).

in_pv_03

none

Temperature value registered by the safety sensor.

in_pv_04

none

Setpoint temperature („SafeTemp“) of the excess temperature protection

in_sp_00

none

Working temperature „t 1“

in_sp_01

none

Working temperature „t 2“

12.3. List of commands

out commands: Setting parameters or temperature values.

Command Parameter Response of circulator

in commands: Asking for parameters or temperature values to be displayed.

Command Parameter Response of circulator

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Command Parameter Response of circulator

in_sp_02

none

Working temperature „t 3“

in_sp_03

none

High temperature warning limit „t High“

in_sp_04

none

Low temperature warning limit „t Low“

in_sp_07

none

Pump pressure stage

in_par_01

none

Te - Time constant of the external bath.

in_par_02

none

Si - Internal slope

in_par_03

none

Ti - Time constant of the internal bath.

in_par_06

none

Xp control parameter of the internal controller.

in_par_07

none

Tn control parameter of the internal controller.

in_par_08

none

Tv control parameter of the internal controller.

in_mode_01

none

Selected setpoint:

2 = Setpoint „t 3“

in_mode_05

none

Circulator in Stop/Start condition:

1 = Start

Status messages

Description

00 MANUAL STOP

Circulator in „OFF“ state.

01 MANUAL START

Circulator in keypad control mode.

02 REMOTE STOP

Circulator in „r OFF“ state.

03 REMOTE START

Circulator in remote control mode.

ERROR MESSAGES

Description

-01 LOW LEVEL ALARM

Low liquid level alarm.

or interrupted.

-03 EXCESS TEMPERATURE WARNING

High temperature warning.

-04 LOW TEMPERATURE WARNING

Low temperature warning.

interrupted.

0 = Setpoint „t 1“ 1 = Setpoint „t 2“

0 = Stop

12.4. Status messages

12.5. Error messages

-02 REFRIGERATOR ALARM Control cable of the refrigerated circulator or MVS solenoid valve controller short-circuited

-05 WORKING SENSOR ALARM Working temperature sensor short-circuited or

Page 50

Remote control

ERROR MESSAGES

Description

35 K.

bus.

-08 INVALID COMMAND

Invalid command.

CURRENT OPERATING MODE

-10 VALUE TOO SMALL

Entered value too small.

-11 VALUE TOO LARGE

Entered value too large.

ALARM

value is stored.

PROTECTOR ALARM

temperature on water-cooled condenser.

DOES NOT WORK

ON COMPRESSOR STAGE 1

ON COMPRESSOR STAGE 2

-25 REFRIGERATOR WARNING

Error in the refrigerating machine.

modification of the configuration.

interrupted.

reservoir.

-06 SENSOR DIFFERENCE ALARM Sensor difference alarm. Working temperature and safety sensors report a temperature difference of more than

-07 I2C-BUS ERROR Internal error when reading or writing the I2C

-09 COMMAND NOT ALLOWED IN

-12 TEMPERATURE MEASUREMENT

-13 WARNING : VALUE EXCEEDS

TEMPERATURE LIMITS

-14 EXCESS TEMPERATURE

-20 WARNING: CLEAN CONDENSOR OR

CHECK COOLING WATER CIRCUIT OF REFRIGERATOR

-21 WARNING: COMPRESSOR STAGE 1

-22 WARNING: COMPRESSOR STAGE 2

Invalid command in current operating mode.

Error in A/D converter.

Value lies outside the adjusted range for the high and low temperature warning limits. But

Excess temperature protection alarm

Cooling of the condenser is affected. Clean air-cooled condenser. Check the flow rate and cooling water

Compressor stage 1 does not work.

Compressor stage 2 does not work.

-23 WARNING: HIGH TEMPERATURE

-24 WARNING: HIGH TEMPERATURE

-30 CONFIGURATION ERROR:

CONFIRM BY PRESSING <ENTER> ON CIRCULATOR

-33 SAFETY SENSOR ALARM Excess temperature sensor short-circuited or

-40 NIVEAU LEVEL WARNUNG Low liquid level warning in the internal

Excess temperature on compressor stage 1.

Excess temperature on compressor stage 2.

The configuration of the circulator does not conform to its present use.

Press to automatically perform a single

Page 51

correct settings are made.

13. JULABO Service – Online remote diagnosis

JULABO circulators of the HighTech series are equipped with a black box. This box is implemented in the controller and records all significant data for the last 30 minutes. In case of a failure, this data can be read out from the unit by using special software. This software is available as a free download from www.julabo.com \ EasyBlackBox.

• Installation is easy and is performed step by step. Please observe the instructions.

• Data read-out is possible in the conditions “OFF”, “R OFF” or “ALARM”.

• Connect the circulator to the computer using an interface cable.

 Start the EasyBlackBox program.

The program asks for the port used (COM1, ......) and the

baud rate of the unit. You do not have this information on hand? Simply try it out! The program continues to send the request until the

5. Data is read out and shown on the monitor divided into the sections >Einstellungen/Settings<, >Alarmspeicher/Alarms stored<, >Blackbox<

 see example

6. After pressing >Speichern/Save<, a text file is created. The program suggests a filename >C:\model description and barcode no.<. Modifications are possible.

7. E-mail this file to service.de@julabo.com, JULABO's service department. JULABO is thus able to provide rapid support.

Page 52

Cleaning / repairing the unit

Caution:

personnel only.

insufficient packing.

JULABO reserves the right to carry out technical modifications with repairs for providing improved performance of a unit.

14. Cleaning / repairing the unit

• Always turn off the unit and disconnect the mains cable from the power

source before cleaning the unit.

• Prevent humidity from entering into the circulator.

• Electrical connections and any other work must be performed by qualified

Cleaning:

For cleaning the bath tank and the immersed parts of the circulator, use low surface tension water (e.g., soap suds). Clean the outside of the unit using a wet cloth and low surface tension water.

The circulator is designed for continuous operation under normal conditions. Periodic maintenance is not required.

The tank should be filled only with a bath fluid recommended by JULABO. To avoid contamination, it is essential to change the bath fluid from time to time.

Repairs

Before asking for a service technician or returning a JULABO instrument for repair, please contact an authorized JULABO service station.

When returning the unit:

• Clean the unit in order to avoid any harm to the service personnel.

• Attach a short fault description.

• During transport the unit has to stand upright. Mark the

packing correspondingly.

• When returning a unit, take care of careful and adequate packing.

• JULABO is not responsible for damages that might occur from

Julabo MA-4, MA-6, MA-12 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Operating manual

1. Intended use

1.1. Description

Operator responsibility – Safety recommendations

2.1. Disposal

2.2. Warranty conditions

2.3. EC Conformity

2.4. Technical specifications

Operating instructions

3. Safety notes for the user

3.1. Explanation of safety notes

3.2. Explanation of other notes

3.3. Safety recommendations

Operating controls and functional elements

4.1. Circulator

Preparations

5.1. Installation

5.2. Bath fluids

5.3. Temperature application to external systems

5.4. Filling / draining

5.5. Countercooling

Operating procedures

6.1. Power connection

6.2. Switching on / Start – Stop

7. Setting of temperatures

7.1. 1-setpoint mode / Direct setting of temperatures

8.1. Excess temperature protection

Safety installations, warning functions

8.2. Switch-over from warning to shutdown function

8.3. Over and Sub temperature warning function

9. Menu functions

9.1. MENU PUMP – Setting of pump pressure

9.2. MENU Configuration

9.3. MENU Control parameters – Xp, Tv, Tn

9.4. MENU SERIAL - BAUDRATE, PARITY, HANDSHAKE

9.5. MENU ATC - Absolute Temperature Calibration

9.6. MENU LIMITS

Troubleshooting guide / error messages

Electrical connections

Status messages

ERROR MESSAGES

Cleaning / repairing the unit