Julabo SemiChill SC2500w Operating Manual
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Julabo SemiChill SC2500w Operating Manual

Recirculating coolers
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SemiChill
Professional Series
SC2500a
air cooled
SC2500w
water cooled
1.950.4571.us.V10
Operating Manual
Recirculating Coolers
01/22
130
T
60
180
30
10
220
°C
ESC
JULABO USA, Inc.
884 Marcon Boulevard
Allentown, PA 18109
Phone: +1(610) 231-0250
Fax:
+1(610) 231-0260
info@julabo.us
www.julabo.us
ON
OFF
SC 2500

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Summary of Contents for Julabo SemiChill SC2500w

  • Page 1 Operating Manual SemiChill Recirculating Coolers Professional Series °C SC2500a air cooled SC 2500 SC2500w water cooled JULABO USA, Inc. 884 Marcon Boulevard Allentown, PA 18109 Phone: +1(610) 231-0250 Fax: +1(610) 231-0260 info@julabo.us 1.950.4571.us.V10 01/22 www.julabo.us...
  • Page 2 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.

  • Page 3: Table Of Contents

    Recirculating Cooler TABLE OF CONTENTS Intended use ......................... 5 1.1. Description ....................... 5 Operator responsibility – Safety instructions ..............6 2.1. Disposal ........................8 2.2. Technical specifications ................... 9 2.3. Cooling water connection ..................12 Operating controls and functional elements ..............13 Safety notes for the user .....................
  • Page 4 12.2. Communication with a PC or a superordinated data system ........65 12.3. List of commands ....................66 12.4. Status messages ....................70 12.5. Error messages .......................70 13. JULABO Service – Online remote diagnosis ..............71 14. Cleaning / repairing the unit ..................72 15. WARRANTY PROVISIONS ..................73...

  • Page 5: Intended Use

    Recirculating Cooler Intended use JULABO recirculating coolers 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). JULABO recirculating coolers are not suitable for direct temperature control of foods, semi-luxury foods and tobacco, or pharmaceutical and medical products.

  • Page 6: Operator Responsibility - Safety Instructions

    Operator responsibility – Safety instructions Operator responsibility – Safety instructions 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.
  • Page 7 There are thermal dangers: Burn, scald, hot steam, hot parts and surfaces that can be touched. Hot surface warning. (The label is put on by JULABO) Observe the instructions in the manuals for instruments of a different make that you connect to the circulator, particularly the corresponding safety instructions.

  • Page 8: Disposal

    Operator responsibility – Safety instructions 2.1. Disposal The recirculating cooler contains a back-up battery that supplies voltage to the 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 may be obligated to return used or defective batteries to collection sites.

  • Page 9: Technical Specifications

    Recirculating Cooler 2.2. Technical specifications Performance specifications measured in accordance with DIN12876. Cooling capacities up to 20°C measured with ethanol; over 20°C with thermal oil unless specified otherwise. Performance specifications apply at an ambient temperature of 20°C. Performance values may differ with other bath fluids.
  • Page 10 Operator responsibility – Safety instructions Professional series Temperature selection digital via keypad indication on VFD COMFORT-DISPLAY remote control via personal computer indication on monitor Temperature indication °C VFD COMFORT-DISPLAY Resolution °C Temperature control ICC - Intelligent Cascade Control Electrical connections: Computer interface RS232 External Pt100 sensor Optional...
  • Page 11 Recirculating Cooler Safety installations according to IEC 61010-2-010: Excess temperature protection adjustable from 0 °C ... 220 °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)

  • Page 12: Cooling Water Connection

    Operator responsibility – Safety instructions 2.3. Cooling water connection Cooling water pressure (IN/OUT) max. 6 bar Pressure difference (IN - OUT) 3.5 to 6 bar Cooling water consumption (IN with 15 °C) 5 l/min Cooling water temperature < 20 °C Notice: Cooling water circuit Risk of oil leaking from the refrigeration system (compressor) of the recirculating...

  • Page 13: Operating Controls And Functional Elements

    Recirculating Cooler Operating controls and functional elements Front view Rear view °C SC 2500 Mains power switch Emergency stop switch Adjustable excess temperature protection according to IEC 61010-2-010 °C Keypad Start / stop key Key for selecting the working temperature - Setpoint 1, 2, 3 Key for selecting the warning and safety values MENU button - for selecting the menu functions Cursor keys...
  • Page 14 Operating controls and functional elements Escape key 1. Cancel entries 2. Return to a higher menu level VFD COMFORT-DISPLAY Header: Control indicators see sections 2.1 and 2.2 Line 1: Actual value internal or external The display is depending on the selected control mode in the menu >...
  • Page 15 Recirculating Cooler Rear view Interface RS232: remote control via personal computer RS232 Option: Electronic module Alarm output (for external alarm signal) ALARM Standby input (for external emergency switch-off) STAND-BY Programmer input and temperature recorder output REG+E-PROG Socket for external measurement and control sensor or external setpoint programming ext Pt100 2 Connectors for solenoid valve.

  • Page 16: Safety Notes For The User

    Safety notes for the user Safety notes for the user 4.1. Explanation of safety notes In addition to the safety warnings listed above, warnings are posted throughout the manual. These warnings are designated by an exclamation mark inside an equilateral triangle.
  • Page 17 Recirculating Cooler 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.

  • Page 18: Preparations

    Preparations 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 shutdown 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 screwdriver, for example.

  • Page 19: Connecting The External System

    Recirculating Cooler 5.2. Connecting the external system • Connect the tubing for cooling the external system to the pump connectors (22, 23) for feed and return on the rear of the recirculating cooler. 3/4" NPT male • In case the system to be cooled is located at a higher level than the recirculating cooler, take note of bath liquid flowing back when the unit is switched off.

  • Page 20: Tubing

    Preparations 5.2.1. Tubing Recommended tubing: Maximum pressure Textile-reinforced tubing > 4.5 bar Warning: Tubing: At high working temperatures, the tubing used for temperature control and for the cooling water supply represents a danger source. A damaged tubing line may allow a large amount of hot bath fluid to be pumped out within a short time.

  • Page 21: Filling

    Fire or other dangers when using bath fluids that are not recommended: Please contact JULABO before using other than recommended bath liquids. JULABO assumes no liability for damage caused by the selection of an unsuitable bath fluid. Unsuitable bath fluids are fluids which, e.g., are highly viscous •...

  • Page 22: Draining

    Preparations 5.4. Draining Notice:  Do not drain the bath fluid while it is hot or cold! Check the temperature of the bath fluid prior to draining (by switching the unit on for a short moment, for example).  Store and dispose of the used bath fluid according to the environmental protection laws.

  • Page 23: Operating Procedures

    Recirculating Cooler Operating procedures 6.1. Power connection Caution: Only connect the unit to a power socket with an earthing contact (PE – protective • earth)! The power supply plug serves as a safe disconnecting device from the line and • must always be easily accessible.

  • Page 24: Setting The Temperatures

    Setting the temperatures Setting the temperatures Press the key to call up the menu for temperature selection. 3 different working temperatures are adjustable. Their values are freely Factory settings: selectable within the operating temperature range. SETP 1 25 °C  This setting may be carried out with the recirculating cooler being in the SETP 2 37 °C...

  • Page 25: Safety Installations, Warning Functions

    Recirculating Cooler Safety installations, warning functions Check the safety installation at least twice a year! See page 18. Settings for the excess temperature protection > SAFETMP< according to IEC 61010-2-010 and for the high > OVERTMP< and low> SUBTMP< temperature warning functions are made in a menu that is called up with the key ...

  • Page 26: Early Warning System, Low Level Protection

    Safety installations, warning functions 8.1.1. Early warning system, low level protection This low level protection is independent of the control circuit and is divided in two sections. . 1. Switch in stage 1 recognizes a critical fluid level (patented) An audible warning (interval tone) sounds and a message appears on the VFD COMFORT-DISPLAY.

  • Page 27: Over And Sub Temperature Warning Functions

    Recirculating Cooler 8.2. Over and Sub temperature warning functions If for a sensitive temperature application task adherence to a working temperature value > SETP < is to be supervised, then set over and sub Over temperature temperature warning values. In the example below, the > SETP < of 85 °C is surrounded by the values >...

  • Page 28: Change-Over Of The Warning Function To Shutdown Function

    Safety installations, warning functions 8.2.1. Change-over of the warning function to shutdown function For the two menu items > OVERTMP< and >SUBTMP< choose between a warning message being signalled or a complete shutdown of the main functional elements such as heater and circulating pump being effected (see page 27).

  • Page 29: Menu Functions

    Recirculating Cooler Menu functions The term „menu functions“ refers to adjustments such as Electronically adjustable pump capacity page 30  PUMP Intelligent Cascade Control, control parameters page 31  CONTROL CONTROL - internal or external control ELFTUNING DYNAMIC - internal COSPEED - external Control parameters - XP, TN, TV internal Control parameters - XP, TN, TV, XPU external...

  • Page 30: Menu Pump - Setting The Pump Pressure

    Menu functions Menu level 1: • Example: Press the button to scroll in menu level 1. If the desired () menu item is indicated on the VFD COMFORT- Menu level 1 DISPLAY, press enter to change to menu level 2. Menu level 2: •...

  • Page 31: Menu Control - Control Parameters

    Recirculating Cooler 9.2. MENU CONTROL – Control parameters CONTROL: Press enter to switch to menu level 2 >CONTROL< (INT / >SELFTUN< (ALWAYS / OFF / ONCE) >DYNINT< (APER / NORM) >XP INT< (0.1 ... 99.9) >TN INT< (3 ... 9999) >TV INT<...
  • Page 32 Menu functions Press the button until the submenu >CONTROL< is displayed. Select the parameter with the keys (INT / EXT). Press enter to store the selected parameter. To continue: Press Notice: Place the external sensor into the bath medium and securely fix the sensor. IMPORTANT: Additional measures for external temperature control.

  • Page 33: Selftuning

    Recirculating Cooler 9.2.2. SELFTUNING XXXXX Selftuning: When performing a selftuning for the controlled system (temperature SELFTUN application system), the control parameters Xp, Tn and Tv are ALWAYS automatically determined and stored. Possible parameters: Factory setting: ONCE OFF - no selftuning The control parameters ascertained during the last identification are used for control purposes.

  • Page 34: Dyn Int - Dynamic Internal

    Menu functions 9.2.3. DYN INT - Dynamic internal This parameter affects the temperature pattern only in case of internal control. Factory setting: APER (aperiodic) Possible parameters: NORM Allows for reaching the setpoint faster, but NORM °C overshooting of up to 5 % is possible. temp.
  • Page 35 Recirculating Cooler Lead time >Tv< (Differential component) The differential component reduces the control settling time. An insufficient lead time will prolong the time required to compensate for disturbance effects and cause high overshooting during run-up. An Setting range: 0 ... 999 excessive lead time could cause instabilities (oscillations) to occur.

  • Page 36: Cospeed - External

    Menu functions 9.2.5. COSPEED - external This parameter affects the temperature pattern only in case of external control. Possible parameters: 0.0 ... 5.0 Press the button until the submenu > COSPEED < is displayed. Set value: Use the cursor keys to move left or right on the display until the numeral you wish to change blinks.

  • Page 37: Control Parameters - Xpu, Xp, Tn, Tv External

    Recirculating Cooler 9.2.6. Control parameters – XPU, XP, TN, TV external The control parameters preset in factory are in most cases adequate for achieving an optimum temperature pattern for the samples requiring temperature application. Each parameter may be manually set via the keypad if necessary, to allow optimum control performance.

  • Page 38: Setpoint - Keypad Control Or Remote Control

    Menu functions 9.3.1. SETPOINT – Keypad control or remote control The recirculating cooler provides four possibilities for setpoint setting. Press the button until the submenu > SETP < is displayed. Select the parameter with the keys Factory setting: KEY (KEY / SERIAL / PT100 / EPROG) Press enter to store the selected parameter.

  • Page 39: A-Start - Autostart

    ON - AUTOSTART on OFF - AUTOSTART off Note: The temperature system has been configured and supplied by JULABO according to N.A.M.U.R. recommendations. This means for the start mode, that the unit must enter a safe operating state after a power failure (non-automatic start mode).

  • Page 40: Off-Mode - Pump Motor On / Off

    Menu functions 9.3.3. OFF-MODE – Pump motor on / off XXXXX Normally the circulating pump is switched via the start/stop signal. However, if circulation should be maintained also for the -OFF- condition, OFFMODE the parameter >PMP ON< needs to be set. PMP OFF Possible parameters: PMP ON...

  • Page 41: Actvar - Actuating Variable

    Recirculating Cooler 9.3.5. ACTVAR - actuating variable XXXXX The variable (ACTuating VARiable) corresponds to the extent to which the heater or cooling machine of the recirculating cooler is controlled. ACTVAR Heat or cold is applied to the bath according to this variable. If this CONTROL happens with the control electronics of the recirculating cooler, called >...

  • Page 42: Time / Date - Setting Time And Date

    Menu functions Warning: The working temperature range of the recirculating cooler is determined during configuration. If set to >CONTROL<, this range cannot be exceeded. If set to > SERIAL < and > EPROG <, heat or cold is applied to the bath without control.

  • Page 43: Menu Serial - Baudrate, Handshake, Parity

    Recirculating Cooler 9.4. MENU SERIAL - BAUDRATE, HANDSHAKE, PARITY XXXXX SERIAL: Press enter to switch to menu level 2 MENU SERIAL >BAUDRAT< >PARITY< Factory settings: >H-SHAKE< 4800 Bauds even hardware handshake For communication between recirculating cooler and a PC or a superordinated process system the interface parameters of bath units must be identical.

  • Page 44: Menu Limits

    Menu functions 9.5. MENU LIMITS XXXXX MENU LIMITS >INT MAX< In case of external control these menu items are >INT MIN< additionally indicated. >BAND H< >BAND L< Press the button until the desired submenu is displayed Set value: Use the cursor keys to move left or right on the display until the numeral you wish to change blinks.
  • Page 45 Recirculating Cooler Factory settings Adjusted maximum heating / cooling. Heating and cooling powers of the recirculating cooler are adjustable. 100 % corresponds to the values in the technical specifications of the equipment. Setting range: HEAT MAX – 0 to 100 % in steps of 1 % COOLING MAX –...

  • Page 46: Menu Program - Integrated Programmer

    Menu functions °C Sense of a band limit: Internal bath  Ensures gentle heating for the objects requiring temperature external system application.  Protects glass reactors, for example, from thermal shock. BAND LOW BAND HIGH The INTMAX: and INTMIN: values are superordinated to this band limit.
  • Page 47 Recirculating Cooler PE STEP (No.) Px SEP (°C) Px TIM (hh.mm) 00:20 00.10 00:20 00:50 00:20 °C Step 1 10 20 30 40 50 60 10 20 30 40 50 60 10 [min] Example: Press the button until the desired submenu is displayed. Set value: Use the cursor keys to move left or right on the display until the...
  • Page 48 Menu functions The started programmer The started programmer indicates the actually calculated setpoint S XX.X in line 2. This value increases within the time period >Px TIM< until the target temperature >Px SEP< of the section is reached. XXXXX If time in a section is set to „0“, the next section starts only as soon as the XX.X target temperature is reached.
  • Page 49 Recirculating Cooler Compiling profiles, indicating sections Press the button until the submenu >PE STEP x< is displayed. Example: Section 2 1.1 Use the increase/decrease arrows to set the number of the XXXXX desired section (1, 2, 3, ... 10). PE STEP 1.2 Press to enter menu level 3.

  • Page 50: Menu Adjust - Atc Absolute Temperature Calibration

    Menu functions 9.7. MENU ADJUST – ATC Absolute Temperature Calibration ATC serves to compensate a temperature difference that might occur between recirculating cooler and a defined measuring point in the bath tank because of physical properties. XXXXX ADJUST: Press enter to switch to menu level 2 MENU ADJUST...
  • Page 51 Recirculating Cooler ATC SENSOR - INTERNAL / EXTERNAL XXX.X In the first submenu the ATC function is set for the >INT< internal or >EXT< external temperature sensor. ACT SEN Calibration can be carried out for the internal temperature sensor and for the external temperature sensor connected to the socket „ext.
  • Page 52 Menu functions Example: Principle: 1-point calibration For ATC calibration, in steady state the bath temperature at the location °C of the temperature sensor (CT) is determined at the respective adjusted working temperature. This value is then set on the recirculating cooler in the menu >ATCalibration<...
  • Page 53 Recirculating Cooler XXX.X Setting working temperature SETP: SETP Press and set the first temperature value under 80.00 > SETPoint 1 < for example (example 1 value = 80 °C). XXXXX 3.1. Wait until this temperature is maintained constant in the bath for about 5 minutes.

  • Page 54: Menu Analog - Analog Inputs/Outputs

    Menu functions 9.8. MENU ANALOG – Analog inputs/outputs  In order to use the analog inputs and outputs, the recirculating cooler REG+EPROG STAND-BY ALARM must be equipped with the Analog Interface Modul available as option. This submenu enables setting of the input and output values for the programmer input and the temperature recorder outputs of socket XXXXX REG+E-PROG.
  • Page 55 Recirculating Cooler (U) / CURRENT (I)) >EPROG < VOLTAGE > EPROG I< (SETP / FLOWRAT / ACTVAR) > UW °C< (-99.90 ) > OW °C< (300.00 ) Press the button until the desired submenu is displayed. Set value/parameter: Use the cursor keys to move left or right on the display until the numeral you wish to change blinks.
  • Page 56 Menu functions XXXXX For > A-ALARM / NORMAL < pins 2 and 3 are connected in any case according to the selected > Function-ALARM <. A-ALARM NORMAL For > A-ALARM / INVERS < pins 2 and 1 are connected in any case according to the selected >Function<.
  • Page 57 Recirculating Cooler CHANNEL 3 REG+E-PROG : EPROG Outputs of the connector REG+E-PROG CHANNEL 2 Select CHANNEL 1, 2 or 3 CHANNEL 1 First define the desired output value for CHANNELs 1 to 3: ACTINT internal actual temperature value (bath temperature)) REG+E-PROG ACTEXT external actual temperature value (external sensor)
  • Page 58 Menu functions XXXXX E-PROG - input Setting needs to be carried out, if MENU CONFIG 1. Setpoint programming is to be made via an external voltage or current source or programmer. XXXXX For this, in the menu > MENU / CONFIG < first set the menu item >...
  • Page 59 Recirculating Cooler XXXXX Example: SP 50.00 °C SP 50.00 Set the external voltage or current source output for the • equivalent of 50 °C temperature setpoint. I xx.xx SP = Setpoint Programmer Press • The temperature value adjusted and set on the external voltage or current source is displayed in line 2 of the VFD COMFORT- DISPLAY for control purposes.
  • Page 60 Menu functions Important:  The usable temperature range between > UW < and > OW < is limited to the configured working temperature range of the circulator resp. of the unit combination (working temperature range see technical specifications on page 9).

  • Page 61: Troubleshooting Guide / Error Messages

    Replace the tubing and replenish the bath tank with the bath fluid. • The float is defect (e. g., because damaged in transit). Repair by authorized JULABO service personnel. Excess temperature sensors defect. • The excess temperature value lies below the working temperature •...
  • Page 62 CODE 40 After eliminating the malfunction, press the mains power switch off and on again to cancel the alarm state. If the unit cannot be returned to operation, contact an authorized JULABO service station. Mains circuit breakers (resettable) – 16A.

  • Page 63: Electrical Connections

    Recirculating Cooler 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 operation.
  • Page 64 Electrical connections Alarm output (for external alarm signal) This potential-free change-over contact is activated in case of an alarm when pins 2 and 3 are connected. Switching capacity max. 30 W / 40 VA Switching voltage max. 125 V∼/− Switching current max.

  • Page 65: Remote Control

    Recirculating Cooler 12. Remote control 12.1. Setup for remote control 1. Check the interface parameters for both interfaces (on recirculating cooler and PC) and make sure they match. (Serial interface see page 43) SERIAL 2. In the menu > MENU / CONFIG < set the menu item > SETPoint < to >...

  • Page 66: List Of Commands

    Remote control Important times for a command transmission: To ensure a safe data transfer, the time gap between two commands should  be at least 250 ms. The circulator automatically responds to an in command with a data string followed by a LF (Line Feed). The next command should only be sent after 10 ms.
  • Page 67 Recirculating Cooler Command Parameter Response of recirculating cooler out_mode_05 Start the unit. out_mode_08 Set the control dynamics - aperiodic out_mode_08 Set the control dynamics - standard out_sp_00 xxx.xx Set working temperature. „SETP 1“ out_sp_01 xxx.xx Set working temperature. „SETP 2“ out_sp_02 xxx.xx Set working temperature.
  • Page 68 Remote control in commands: Asking for parameters or temperature values to be displayed. Command Parameter Response of recirculating cooler version none Number of software version (V X.xx) status none Status message, error message (see page 70) in_pv_00 none Actual bath temperature. in_pv_01 none Heating power being used (%).
  • Page 69 Recirculating Cooler Command Parameter Response of recirculating cooler in_par_12 none Tv control parameter of the cascade controller. in_par_13 none Adjusted maximum internal temperature of the cascade controller. in_par_14 none Adjusted minimum internal temperature of the cascade controller. in_par_15 none Band limit (upper) in_par_16 none Band limit (lower)

  • Page 70: Status Messages

    Remote control 12.4. Status messages Status messages Description 00 MANUAL STOP Recirculating cooler in „OFF“ state. 01 MANUAL START Recirculating cooler in keypad control mode. 02 REMOTE STOP Recirculating cooler in „r OFF“ state. 03 REMOTE START Recirculating cooler in remote control mode. 12.5.

  • Page 71: Julabo Service - Online Remote Diagnosis

    Recirculating Cooler 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 EasyBlackBox.

  • Page 72: Cleaning / Repairing The Unit

    The recirculating cooler 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...

  • Page 73: Warranty Provisions

    Recirculating Cooler 15. WARRANTY PROVISIONS The following Warranty Provisions shall apply to products sold in North America by Julabo (“Seller”) to the entity shown as buyer (“Buyer”) on Seller’s invoice. Initial Warranty Upon Seller’s receipt of payment in full for the products and subject to Buyer’s compliance with the terms of sale and...
  • Page 74 An Out of Box Failure (OBF) is defined as a product failure immediately following unpacking and installation of a newly delivered product. JULABO provides a 14-day grace period after the date of shipment, during which time the delivered product must be checked for defect. The same exclusions that apply to the regular warranty also apply to OBF classification.

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