JULABO LC 4 User Manual

English

Operating manual

Temperature controller

LC4

!

JULABO GmbH
77960 Seelbach / Germany
Tel. [phone] / 51-0
Fax [phone] / 24 91

1.951.5200-V2 06/13

19515200-V2.doc 26.07.2013

[e-mail]
www.julabo.de

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

Temperature control devices for research and industry are developed,
produced, and distributed according to the requirements of ISO 9001
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 operating manual for future use

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INDEX

OPERATING MANUAL ..................................................................................................... 4

1. INTENDED USE ........................................................................................................ 4

1.1. Description ........................................................................................................ 4

2. OPERATOR RESPONSIBILITY – SAFETY RECOMMENDATIONS ........................ 4

2.1. Disposal ............................................................................................................ 6

2.2. EC Conformity ................................................................................................... 7

2.3. Warranty conditions .......................................................................................... 7

2.4. Technical specifications .................................................................................... 8

OPERATING INSTRUCTIONS ....................................................................................... 10

3. SAFETY NOTES FOR THE USER ......................................................................... 10

3.1. Explanation of safety notes ............................................................................. 10

3.2. Explanation of other notes .............................................................................. 10

3.3. Safety recommendations ................................................................................ 10

4. OPERATING CONTROLS AND FUNCTIONAL ELEMENTS .................................. 12

LC4

5. OPERATING PROCEDURES ................................................................................. 14

5.1. Installation ....................................................................................................... 14

5.2. Power connection ........................................................................................... 14

5.3. Connecting a heating device ........................................................................... 15

5.4. Connecting the temperature sensors .............................................................. 15

5.5. Applications ..................................................................................................... 16

5.6. Switching on / Start - Stop ............................................................................... 17

5.7. Setting the temperatures ................................................................................. 19

5.8. Setting the PID control parameters Xp, Tn and Tv .......................................... 19

5.8.1. Optimization instructions for the PID control parameters ........................ 21

5.9. Setting the safety temperature (with shutdown function) ................................ 22

6. MENU FUNCTIONS ................................................................................................ 23

6.1. Sensor calibration - ATC function ................................................................... 23

6.2. Temperature range: HL / LL ............................................................................ 24

6.3. Parameter sets for control: PA ........................................................................ 24

6.4. Active countercooling: Pc ................................................................................ 26

6.5. Controlling the heater capacity: h .................................................................... 26

6.6. Interface parameters: r - br - P - H .................................................................. 27

7. TROUBLESHOOTING GUIDE / ERROR MESSAGES ........................................... 28

8. ELECTRICAL CONNECTIONS ............................................................................... 29

9. REMOTE CONTROL............................................................................................... 31

9.1. Communication with a PC or a superordinated data system........................... 31

9.2. List of commands ............................................................................................ 32

9.3. Status messages ............................................................................................ 34

9.4. Error messages ............................................................................................... 34

10. CLEANING / REPAIRING THE UNIT ...................................................................... 35

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Operating manual

Operating manual

1. Intended use

Fulfilling its principle task, reliable temperature control and measurement, the LC4 temperature
controller also implements safety and monitoring functions, particularly in the areas of chemical
research and quality control. The sophisticated capabilities of the unit allow wide application
with electrical heating devices such as
heating hoods, heating baths,
heating pads and bandages,
water and oil baths.

JULABO Temperature controllers are not suitable for direct temperature
control of foods, semi-luxury foods and tobacco, or pharmaceutical and
medical products. Direct temperature control means unprotected contact of the

object with the bath medium (bath fluid).

1.1. Description

Setting is rapid and simple using the keypad with its easy to learn symbols. Keypad is splash­proof, easily cleaned and ergonomically designed. The microprocessor technology allows the
working temperature setpoint and five parameter sets to be stored and indicated on the
MULTI-DISPLAY (LED).
The safety value for excess temperature protection, a safety installation independent from the
control circuit, is adjustable on the front and visible on the MULTI-DISPLAY (LED).
The RS232C port permits modern process engineering without additional interface, directly on­line from the controller to your application equipment.

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.

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

LC4

Contact:

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.

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. The unit is not for use in explosive atmosphere.
Only use recommended materials (bath fluids). Only use non-acid and non corroding materials.

JULABO GmbH
Eisenbahnstraße 45
77960 Seelbach / Germany

Tel. [phone] / 51-0 [e-mail]

Fax [phone] / 24 91 www.julabo.de

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Operator responsibility – Safety recommendations

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:
1

2

or
2

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)

2.1. Disposal

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
municipal waste is not permitted!

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2.2. EC Conformity

LC4

The products described in the operating instructions conform to the
requirements of the following European guidelines:

Low voltage regulations with respect to legal harmonization of the member countries

concerning electric devices for use within certain voltage limits.

EMC guideline with respect to legal harmonization of the member countries

concerning electromagnetic compatibility.

JULABO GmbH
Eisenbahnstr. 45
77960 Seelbach / Germany

2.3. 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

Extension of the warranty period – free of charge

for a period of ONE YEAR.

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.de, 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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Operator responsibility – Safety recommendations

2.4. Technical specifications

LC4

Adjustable temperature range °C -50 .... 350

Display accuracy % ±0.5 ± 1 Digit

Temperature stability
(depending on substances in the bath)
Temperature selection digital

via keypad indication on MULTI-DISPLAY (LED)
remote control via computer indication on monitor
Temperature display MULTI-DISPLAY (LED): 4-digit

Resolution °C 0.1
ATC function °C ±9.99
Temperature control PID
with 5 parameter sets freely selectable

°C >±0.05

Working temperature: 4-digit

Working temperature sensor Pt100, 4-lead technique
Safety temperature sensor Pt100, 4-lead technique
Electrical connections:
External alarm 24-0 V DC / max. 25 mA
Interface RS232C
Mains power socket
for heating device (at 115 V) W max. 1000; resistive load
or (at 230 V) W max. 2000; resistive load

Overall dimensions (WxDxH) cm 17 x 17 x 16
Weight kg 3
Ambient temperature °C 5 ... 40

Mains power connection ±10% V/Hz 230 / 50-60
Mains power connection ±10% V/Hz 115 / 50-60
Current draw A 10
Total power consumption W max. 1050 (at 115 V)
Total power consumption W max. 2050 (at 230 V)

All measurements have been carried out at
rated voltage and frequency
ambient temperature 20 °C
Technical changes without prior notification reserved.

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Safety installations according to IEC 61010-2-010:
Excess temperature protection 0 °C ... 350 °C

Supplementary safety installations:
Supervision of the working sensor plausibility control
Alarm indication optical + audible (continuous tone)

LC4

Environmental conditions according to EN 61 010, part 1:
Use only indoor.
Altitude up to 2000 m - normal zero.
Ambient temperature: +5 ... +40 °C (for storage and transportation)

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 fluctuation of ±10 % are permissible.

Protection class according to EN 60 529 IP31

The unit corresponds to Class I

Overvoltage category II

Pollution degree 2

Caution:

The unit is not for use in explosive environment.

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).

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Operating instructions

Operating instructions

3. Safety notes for the user

3.1. Explanation of safety notes

In addition to the safety warnings listed, warnings are posted throughout the
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.
Read and follow these important instructions for averting dangers.

Warning:

Describes a possibly highly dangerous situation. If these instructions are not

followed, serious injury and danger to life could result.

Caution:

Describes a possibly dangerous situation. If this is not avoided, slight or

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

Notice:

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

anything in its surroundings can be damaged.

3.2. Explanation of other notes
Note!

Draws attention to something special.

3.3. Safety recommendations

Follow the safety recommendations to prevent damage to persons or property.

Important!

Indicates usage tips and other useful information.

Further, the valid safety instructions for working places must be followed.

 ConnOnly connect the unit to a power socket with earthing contact

(PE – protective earth)!

 The power supply plug serves as a safe disconnecting device from the line

and must always be easily accessible.

 Place the instrument on an even surface on a pad made of non-inflammable

material.

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 Do not stay in the area below the unit.
 Make sure you read and understand all instructions and safety precautions

LC4

listed in this manual before installing or operating your unit.

 Never operate the unit without bath fluid in the bath.
 Observe the flash point of the bath medium used. The excess temperature

protection should be set at least 25 °C below the fire point.

 Set up the heating device according to the instructions prior to connection to

the controller and ensure secure attachment to the bath.
Danger of burning and fire!

 Immerse both temperature sensors in the bath medium and ensure secure

attachment.

 Check the filling level of the bath fluid from time to time. The heater must

always be fully covered with the bath fluid!

 Never operate damaged or leaking equipment.
 Always turn off the unit and disconnect the mains cable from the power

source before performing any service or maintenance procedures, or before
moving the unit.

 Sudden jolts or drops may cause damage in the interior of the unit.
 Always empty the bath before moving the unit.
 Transport the unit with care.
 Never operate equipment with damaged mains power cables.
 Observe all warning labels.
 Never remove warning labels.
 Always turn off the unit and disconnect the mains cable from the power

source before cleaning the unit.

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

 Some parts of the bath cover may become extremely warm during

continuous operation. Therefore, exercise particular caution when touching
these parts. Use safety glasses!

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