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SP Scientific RS Series Operator's Manual

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R
C
O
'
M
ECIRCULATING
HILLER
PERATOR
S
ANUAL
RS44XX2MCT C
HILLER
RS S
C
ERIES
HILLER

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Summary of Contents for SP Scientific RS Series

  • Page 1 ’ ECIRCULATING HILLER PERATOR ANUAL RS44XX2MCT C HILLER RS S ERIES HILLER...
  • Page 3 The information in this document is subject to change without prior notice. Always confirm with SP Scientific that you are using the most current version of this document. SP Scientific is free to modify any of its products and services, in any manner and at any time, notwithstanding the information contained in this document.

  • Page 4: Important Symbols

    Never operate equipment with damaged line cords.  Never operate the unit without cooling fluid in the reservoir / bath chamber.  Never remove warning labels.  Never operate damaged or leaking equipment. Rev 004, 04/12 © SP Scientific 2012...

  • Page 5: Warranty Information

    Limited Warranty SP Scientific (the “Company”) shall warrant each of its products against defects in material or workmanship for a period of 12 months from the date of shipment provided that the product is used in a reasonable manner under appropriate conditions and consistent with the applicable operating instructions.
  • Page 6 Rev 004, 04/12 © SP Scientific 2012...

  • Page 7: Table Of Contents

    Operating Mode ..............................14 Proportional Control Menu ..........................15 SPAN Menu ............................... 16 Miscellaneous Menu ............................17 Communications Menu ............................18 PID Tuning ................................. 19 It and dt ................................. 20 CCt ................................20 CPb ................................21 Rev 004, 04/12 © SP Scientific 2012...
  • Page 8 Value ................................33 Terminator ..............................34 Commands and Codes ............................34 Command Set ............................... 34 Alarm Codes ..............................41 RS-232 Error Codes ............................42 Sample Program ..............................45 Program................................. 45 Appendix A: Troubleshooting ..................47 Rev 004, 04/12 © SP Scientific 2012...

  • Page 9: Introduction

    Overview RS Series Chillers are portable, caster-mounted systems that provides temperature controlled fluid over a wide range. All SP Scientific chillers feature innovative design, high-quality construction, and highly reliable components. This chiller will dependably serve your cooling needs for years to come.
  • Page 10 Introduction RS44XX2MCT Chiller Rev 004, 04/12 © SP Scientific 2012...

  • Page 11: Installation And Startup

    Should damage or loss be discovered, you may make a written request for inspection by the carrier's agent within 15 days of the delivery date. You may then file a claim with the freight carrier or SP Scientific, depending on the terms of your shipment.

  • Page 12: Setup And Installation

    (about a 1% cooling capacity reduction per degree above 24C to 27C (75F to 80F). 72F). Expect reduced reliability. Warranty may be voided. 27C to 29.5C (80F to 85F) Not Acceptable. Warranty will be voided. Over 29.5C ( Over 85F) Rev 004, 04/12 © SP Scientific 2012...

  • Page 13: Electrical Requirements

     When the unit is plugged in the amber POWER light on the front panel should illuminate. Note: For Lock Out/Tag Out, plug the appropriate device into the line cord. Rev 004, 04/12 © SP Scientific 2012...

  • Page 14: Selecting A Process Fluid

    Ethylene Glycol and water (60/40 mix) is an inexpensive and readily available fluid for –25C to +60C. If you require a fluid outside this temperature range, SP Scientific suggests using HT-30 Silicone Oil for –60C to +100C. If you require a completely non-flammable fluid SP Scientific suggests Galden™...

  • Page 15: Properties Of A Process Fluid

    Close the red vent screw on the reservoir lid to prevent evaporation of the fluid, but remember to open the vent screw when changing setpoints (the fluid expands and contracts with temperature changes). Rev 004, 04/12 © SP Scientific 2012...

  • Page 16: Connect To The Process

    Installation and Startup RS44XX2MCT Chiller Connect to the Process SP Scientific provides input and output connections for the process fluid. To tie these lines into your process, you will require:  1/4” Fittings for 1/4” male pipe thread on the fluid I/O ports.

  • Page 17: Prime The Fluid Loop

    Restart the pump by pressing the I/O button again. Continue this process until the entire fluid loop is primed and the reservoir level remains 1" (2.5cm) from the top. Your unit is now fully installed and ready to operate. Rev 004, 04/12 © SP Scientific 2012...
  • Page 18 Installation and Startup RS44XX2MCT Chiller Rev 004, 04/12 © SP Scientific 2012...

  • Page 19: Operation

    Display flashes SP (setpoint) then the current setpoint temperature (the setpoint is the fluid temperature that the unit will maintain). Adjust the Setpoint using the ▲▼ keys. The value for setpoint will be accepted after 4 seconds of inactivity. Rev 004, 04/12 © SP Scientific 2012...

  • Page 20: Control

    The setpoint is automatically accepted after 4 seconds. Shut Down Press the I/O button to put the unit back in Idle. The refrigeration will shut down and the display will blank. The amber Power light will remain lit. Rev 004, 04/12 © SP Scientific 2012...

  • Page 21: User Menu

    The ▲▼ keys can be used to choose and view menus and to adjust parameter values. The I/O button is used to move down to the next parameter (functions as an “enter” key). Rev 004, 04/12 © SP Scientific 2012...

  • Page 22: Operating Mode

    Cooling Band Decimal Point Stop Bit dAtA Integral Time Span High Power Fail Word Length Recovery Derivative Time Span Low Temperature Parity Scale Cool Cycle “Ready” Temp. Time Band rdyt “Ready” Time Const. Rev 004, 04/12 © SP Scientific 2012...

  • Page 23: Proportional Control Menu

    In order to reduce wear on the solenoids and valves, the period (total time on and off) may never be less than two seconds. Additionally, the duration of either On or Off is never less Cool Cycle Time than 0.25 seconds. Rev 004, 04/12 © SP Scientific 2012...

  • Page 24: Span Menu

    Span High. Defines the maximum allowable setpoint. Adjust the values of Span High and Span Low to define the range of setpoints acceptable for your particular Span application. High Span Low. Defines the minimum setpoint in this range. Span Low Rev 004, 04/12 © SP Scientific 2012...

  • Page 25: Miscellaneous Menu

    FAST processes that have slewed across a wide span will yield a Ready in a time longer than the constant due to early windup. This is, however, consistent with the probability that the process will overshoot the band. Rev 004, 04/12 © SP Scientific 2012...

  • Page 26: Communications Menu

    Data Word. Length may be set to 7 bit or 8 bit. Word Length Parity. Detection may be selected per the following: Display Parity none Parity even Note: Data word 8 bit length forces “no parity.” Rev 004, 04/12 © SP Scientific 2012...

  • Page 27: Pid Tuning

    The following pages contain the basics of how to go from the values at right and tune the unit for your specific application. In most cases it is sufficient to calculate a new Integral Time (It) and enter that into the controller. Rev 004, 04/12 © SP Scientific 2012...

  • Page 28: It And Dt

    Start a stopwatch when the Cool LED comes on, wait for the LED to go off, and stop the stopwatch when the temperature begins to rise again. Set the value of CCt = time on the stopwatch (in seconds). Example: Rev 004, 04/12 © SP Scientific 2012...

  • Page 29: Cpb

    Action to Eliminate any leaks that have been detected. Add fluid to the reservoir to raise the level of the Recover: fluid to the acceptable level. Press ALM CLR, to reset the alarm. Rev 004, 04/12 © SP Scientific 2012...

  • Page 30: High Fluid Temperature

    (HA), or adjust the HA value so that it is above the desired setpoint. If the HA still goes off, check that the thermal load being applied by your process is within the heat removal capacity of this unit. Contact SP Scientific Service if the condition persists. Low Fluid Temperature...

  • Page 31: Maintenance

    PROCEDURES. Note: Always notify the SP Scientific Service Department before performing repairs to a unit that is under warranty. Failure to notify SP Scientific Service will void the factory warranty. Lockout/Tagout Procedure To prevent accidental or unauthorized starting of this unit during maintenance, disconnect the power cord and install an appropriate lockout device on the end of the power cord.

  • Page 32: Fuse Replacement

    Maintenance RS44XX2MCT Chiller Fuse Replacement Replace fuses only with the type and rating specified by the orange (utilities) label. Utilities Label Fuse Location Rev 004, 04/12 © SP Scientific 2012...

  • Page 33: Cleaning

    Remove cabinet panels. Blow compressed air systematically from the top to bottom. Let air settle for several minutes and repeat. Check for areas that have frosted during operation and insulate as required. Connect electric utilities. Rev 004, 04/12 © SP Scientific 2012...

  • Page 34: Draining Fluid

    Drain Hose With a screw driver loosen the clamps on the end of the drain hose. Remove the plug. Once the unit is completely drained, replace the plug. Reposition and tighten the hose clamp. Rev 004, 04/12 © SP Scientific 2012...

  • Page 35: Rs-232 Communications

    The connections used within the interface will be limited to:  Signal Ground  Transmit Data  Receive Data  Request to Send  Clear to Send  Data Terminal Ready  Data Set Ready Rev 004, 04/12 © SP Scientific 2012...
  • Page 36 However, the null modem adapter is inserted between the female jack on the Multi- Cool and a standard connecting RS-232 cable. Null Modem Adapter Standard Connector Cable Female RS-232 Male RS-232 Port Port on Multi-Cool on Computer Rev 004, 04/12 © SP Scientific 2012...

  • Page 37: Communications

    Upper and lower case alphabetic characters will be accepted interchangeably. Data descriptions are identified by direction from the perspective of the system controller:  Received data: from the host system to the MPC/EDC.  Transmitted data: from the MPC/EDC to the host. Rev 004, 04/12 © SP Scientific 2012...

  • Page 38: Received Data

    Absolute Command Basic system functions/commands will consist of a fixed character string. Examples:  START Wake up system  STOP Shut down system  POLL Force a response from the system Rev 004, 04/12 © SP Scientific 2012...
  • Page 39 ("?"). The format of the reply is defined below (under "Transmitted Data"). With few exceptions, the query command replicates the mnemonic for the corresponding parametric command, merely substituting the "?" for the "=" in the string. Rev 004, 04/12 © SP Scientific 2012...

  • Page 40: Transmitted Data

    User software should be configured to transmit a message (received data), receive the reply (transmitted data), and verify the integrity of the exchange before proceeding to the next transmission. Rev 004, 04/12 © SP Scientific 2012...

  • Page 41: Transmitted Data Format

    Temperature values will be transmitted to the host in the units (C, F, K scale) selected by the DEGREES= command (or via the dEG setting in the control panel “Etc” menu). Rev 004, 04/12 © SP Scientific 2012...

  • Page 42: Terminator

    Other codes are documented in a separate section, below.  BAUD? {F003} Report the present BAUD rate in use in the communication link. Values returned will be the same as those programmed via the system control panel: 0=300, 1=1200, 2=2400, 3=9600. Rev 004, 04/12 © SP Scientific 2012...
  • Page 43 Restore factory default values to the programmable parameter table.  DEGREES= / DEGREES? {F016} Set or query the temperature scale used on the display and in further RS-232 communications. 0 = Celsius, 1 = Fahrenheit, 2 = Kelvin. Rev 004, 04/12 © SP Scientific 2012...
  • Page 44 Set or query the width, in degrees, of the band about setpoint (SP) over which the system will proportion the power applied to the heater (Heat Proportioning Band).  HYSTLI? (Service Use) {F028} Query the hysteresis, in degrees, applied to activation of the liquid injection valve. Rev 004, 04/12 © SP Scientific 2012...
  • Page 45 Set or query the calibration offset factor applied to the remote [external] temperature sensor.  OSRTD= / OSRTD? {F038} Set or query the calibration offset factor applied to the system [internal] temperature sensor. Rev 004, 04/12 © SP Scientific 2012...
  • Page 46 Query state of refrigeration. Returned 0 = off, 1 = 1st stage on, 2 = 2nd stage on (if cascade system).  REFRHRS? {F078} Query running hours of system refrigeration.  REFRSW= / REFRSW? {F051} Set or query state of refrigeration switch. 0 = off, -1 = on. Rev 004, 04/12 © SP Scientific 2012...
  • Page 47 TIME= / TIME? (Not yet implemented) {F066} Set or query time of day in Real-Time Clock option.  TRIPLI? (Service use) {F067} Query factory-programmed trip temperature of suction line, to determine operation of the liquid injection valve. Rev 004, 04/12 © SP Scientific 2012...
  • Page 48 This value is used to prevent over/undershoot of the setpoint temperature from yielding a premature "ready" result.  ZEROCAL (Not Yet Implemented) Command to restore all calibration constants to the unbiased state (zero offset, unity gain). Rev 004, 04/12 © SP Scientific 2012...

  • Page 49: Alarm Codes

    EDC Code 5: Overtemp. Indicates activation of fail-safe [control-independent] overtemperature safety device.  MPC Code 12: 4-20mA Alarm. Indicates disconnect of 4-20mA current source to remote analog programming input, if such interface is specified. Rev 004, 04/12 © SP Scientific 2012...

  • Page 50: Rs-232 Error Codes

    Requests for information (queries) result in information being buffered faster than it can be transmitted to the host (Baud-Rate dependent). 1KB buffer exceeded.  E011 Parse Buffer Overflow. Too many commands (>32) on a single line. Rev 004, 04/12 © SP Scientific 2012...
  • Page 51 "local" operation.  E031 Not a User Function. Certain program statements are reserved for factory access. Error 31 reports an attempt to program values requiring [factory] security-code access. Rev 004, 04/12 © SP Scientific 2012...
  • Page 52  E044 Local Lockout. Unit is locked in local. Removal of this lock may only be accomplished from the system control panel before changes to system state may be made from the RS-232. Rev 004, 04/12 © SP Scientific 2012...

  • Page 53: Sample Program

    50 PRINT A$; 60 OLINE$=OLINE$+A$ 70 IF A$ <> CHR$(13) THEN GOTO 30 80 PRINT #1,OLINE$; 90 OLINE$="" 100 GOTO 20 110 WHILE NOT EOF(1) 120 B$=INPUT$(LOC(1),#1) 130 PRINT B$; 140 WEND 150 GOTO 30 Rev 004, 04/12 © SP Scientific 2012...
  • Page 54 RS-232 Communications RS44XX2MCT Chiller Rev 004, 04/12 © SP Scientific 2012...

  • Page 55: Appendix A: Troubleshooting

    Check that "LIQUID OUT" port of system is connected Plumbing incorrectly connected to inlet of system to be cooled, and that "LIQUID IN" is to process. connected to outlet of system to be cooled. Rev 004, 04/12 © SP Scientific 2012...
  • Page 56 Measure resistance of sensor. It should be Open Sensor. approximately 100 ohms. If it is not, a new sensor is needed. Contact SP Scientific Service for new sensor. Temperature Connection on controller has Check all connections on controller inside the unit. If Controlling but not come loose.
  • Page 57 (continued). overheat. Pump motor has burned out. Contact SP Scientific Service for new pump motor. Press “0/1" button. Fluid pump starts first. “0/1" switch was not pressed. Refrigeration starts several seconds later .
  • Page 58 Appendix A: Troubleshooting RS44XX2MCT Chiller Rev 004, 04/12 © SP Scientific 2012...
  • Page 60 SP Scientific 815 State Route 208 Gardiner, NY 12525 USA 3538 Main Street Stone Ridge, NY 12484 USA www.SPScientific.com (800) 431-8232 (845) 255-5000...

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