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Chromalox 8004-2 User Manual

Temperature controller with servomotor output
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8004-2
Temperature Controller with Servomotor Output
Issue date
May 2000
Chromalox
r USER'S MANUAL

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Summary of Contents for Chromalox 8004-2

  • Page 1 8004-2 Temperature Controller with Servomotor Output Chromalox r USER'S MANUAL Issue date May 2000...

  • Page 2: Table Of Contents

    INDEX MOUNTING REQUIREMENTS ......1 OUTLINE AND CUT OUT DIMENSIONS ... 2 CONNECTION DIAGRAMS ........ 3 PRELIMINARY HARDWARE SETTINGS ... 9 CONFIGURATION PROCEDURE ....10 OPERATIVE MODE .......... 18 Display function ......... 18 Indicators ........... 19 Pushbutton function during operating mode Feedback potentiometer calibration ..
  • Page 3 Model identification Model 8004 1/16 DIN Temperature Controller Code Outputs 1 servomotor + 1 relay + 3 logic inputs Code Output 2 - Alarm None Out #4 Out #4 + RS-485 Code Instrument Power 100 - 240 Vac 24 V AC/DC Code Add to complete model number 8004 21...

  • Page 4: Mounting Requirements

    MOUNTING REQUIREMENTS Select a mounting location where there is minimum vibration and the ambient temperature range between 0 and 50 °C. The instrument can be mounted on a panel up to 15 mm thick with a square cutout of 45 x 92 mm. For outline and cutout dimensions refer to Fig.

  • Page 5: Outline And Cut Out Dimensions

    OUTLINE AND CUT OUT DIMENSIONS Fig. 2...

  • Page 6: Connection Diagrams

    CONNECTION DIAGRAMS A) MEASURING INPUT NOTE: Any external components (like zener barriers etc.) connected between sensor and Connections are to be made with the instrument input terminals may cause errors in measurement housing installed in its proper location. due to excessive and/or not balanced line resistance or possible leakage currents.
  • Page 7 RTD INPUT LINEAR INPUT Shield Fig. 5 RTD INPUT WIRING NOTE: 1) Don’t run input wires together with power cables. Fig. 6 mA, mV AND V INPUTS WIRING 2) Pay attention to the line resistance; a high line resistance may cause measurement errors. NOTE: 3) When shielded cable is used, it should be 1) Don’t run input wires together with power...
  • Page 8 B) LOGIC INPUT C) VALVE MOTOR DRIVE OUTPUT. Safety note: s (Open the valve) 1) Do not run logic input wiring together with power cables. Power Servo- 2) Use an external dry contact capable of line motor switching 0.5 mA, 5 V DC. 3) The instrument needs 100 ms to recognize a contact status variation.
  • Page 9 D) RELAY OUTPUTS INDUCTIVE LOADS High voltage transients may occur when switching inductive loads. NO - OUT 3 Through the internal contacts these transients may introduce disturbances which can affect the OUT 3 performance of the instrument. C - OUT 3/4 The internal protection (varistor) assures a correct protection up to 0.5 A of inductive component.
  • Page 10 SERIAL INTERFACE E) POWER LINE WIRING RS-485 interface allows to connect up to 30 devices with one remote master unit. POWER LINE 100 V to 240 V A.C (50/60Hz) A'/A A/A' or 24 V AC/DC R (S,T) B'/B B/B' COMMON Fig.
  • Page 11 NOTE: a single switch or circuit-breaker can drive more than one instrument. 9) When a neutral line is present, connect it to terminal 13.

  • Page 12: Preliminary Hardware Settings

    PRELIMINARY HARDWARE OPEN INPUT CIRCUIT This instrument is able to identify the open circuit SETTINGS for TC and RTD inputs. 1) Remove the instrument from its case. The open input circuit condition for RTD input is 2) It is necessary to set J1 according to the desired shown by an "overrange"...

  • Page 13: Configuration Procedure

    GENERAL NOTES for configuration. SEr3 = Baude rate for serial link Not available when SEr1 = OFF FUNC = This will memorize the new value of From 600 to 19200 baud. the selected parameter and go to the NOTE: 19200 baud is shown on display as 19.2. next parameter (increasing order).
  • Page 14 23 = TC type range -150 / +2500 °F NOTE: the minimum input span (S = P4 - P3), in 24 = TC type range -330 / +750 °F absolute value, should be set as follows: 25 = TC type range -150 / +2550 °F - For linear inputs, S >...
  • Page 15 P6 = Valve position indication. L.A. = Low alarm (inside for band alarm) with This parameter is available only if P5 = Sn.OL automatic reset. Fb = the valve position will be displayed H.L. = High alarm (outside for band alarm) with manual reset (latched).
  • Page 16 P12 = Alarm 3 operating mode P16 = Alarm 3 hysteresis value Available only when P11 is different from "nonE". Available only when P11 is different from "nonE" H.A. = High alarm (outside for band alarm) with and P13 is equal to "COnF" or "SPEC". automatic reset.
  • Page 17 From 5000 to 9999 = This combination number is P25 = Cooling media. a secret value to be used, in run time (see Available only when the device is configured with nnn parameter) to put device in lock/unlock two control outputs. condition.
  • Page 18 P28 = Action of the alarm 2 and 3 P32 = Displayable protected parameters Available only when P9 or P11 are different from This parameter is skipped when P18 = 0. "nonE". OFF = Protected parameters cannot be dir = direct action (relay energized in alarm condi- displayed.
  • Page 19 P38 = MANUAL function P40 = Transfer from AUTO to MANUAL OFF = manual function is disabled This parameter is skipped if P38 = OFF On = manual function can be enabled/ When P5 = "Sn.OL" and P6 = "no.Fb", this disabled by MAN pushbutton or by parameter is forced to "bUnP"...
  • Page 20 6 = When an overrange or an underrange NOTE: if the instrument detects an out of range condition is detected the instrument will or an error condition on the measured value it will revert the "standard" effect. ever operate as P45 = 0. NOTE: For "Standard effect"...

  • Page 21: Operative Mode

    P50 - Set point access OPERATIVE MODE only SP is accessible. 1) Remove the instrument from its case. only SP and SP2 are accessible. 2) Set the internal dip switch V2 in closed condition all 4 set points are accessible. 3) Re-insert the instrument.

  • Page 22: Indicators

    In order to keep the desired information Pushbutton functionality during operating mode. FUNC = o when the instrument is in "normal continuously on the lower display, depress "s" or display mode" "t" push- buttons to remove the timeout. 1) with a brief pressure (<3s) it starts When is desired to return in "Normal Display the parameter modification Mode"...

  • Page 23: Feedback Potentiometer Calibration

    NOTE: during run time mode a 10 or 30 seconds The instrument will show on the upper display time out (see P46) is applied to parameter modifica- the actual valve position in percent and, on the tion procedure. lower display the "POS.H" message. Pushing continuously s or t pushbutton, If, during operative parameter modification, no pushbutton is pressed for more than 10 (30)

  • Page 24: Manual Function

    The alarms output conditions depend on the By depressing, for more than 1 second, MAN alarm action type (see P26-P28). again, or by opening the contact 2, the device Depress for more than 5 s s and FUNC returns in AUTO mode. pushbuttons to restore the control status.

  • Page 25: Operative Set Point Selection

    OPERATIVE SET POINT SELECTION SMART function It is possible to select the operating set point (SP, It is used to optimize automatically the control SP2, SP3 or SP4) only by the binary conbination action. of the logic inputs 1 and 3. At instrument power up, if the SMART is ON, the logic input 3 logic input 1...

  • Page 26: Lamp Test

    LAMP TEST OPERATIVE PARAMETERS When it is desired to verify the display efficiency, Push the FUNC pushbutton, the lower display will push FUNC pushbutton for more than 10 s. The show the code while the upper display will shows instrument will turn ON, with a 50 % duty cycle, the value or the status (ON or OFF) of the all the LEDs of the display (we define this function selected parameter.
  • Page 27 Set point 4 (in eng. units). HSA2 Alarm 2 hysteresis Range: from rL to rH. This parameter is available only if P 9 is SP4 is operative when logic input 1 and the equal to "AL2.P", "AL2.b" or "AL2.d". logic input 3 are closed and P50 = 2.. For other details see HSA1parameter.
  • Page 28 the integral time will be limited by P36 Sn.HL Servomotor high limit parameter. This parameter is available only when Derivative time P5 = Sn.CL This parameter is skipped if Pb=0 (ON/ Range from SnLL to 100 (in % of the OFF action).
  • Page 29 Set point low limit Range: from 0.1 to 25.0 %/s.Above this Range: from min. range value (P3) to rH. value the display shows “InF” meaning Note: When P3 has been modified, rL that no ramp limitation is imposed. will be realigned to it Sn.CA Servomotor control action Set point high limit...

  • Page 30: Error Messages

    ERROR MESSAGES - The instrument is set for one output only and an UNDERRANGE is detected, the OUT 1 turns ON (if reverse action) or OFF (if direct action). OVERRANGE, UNDERRANGE AND - The instrument is set for heating/cooling action SENSOR LEADS BREAK INDICATIONS and an UNDERRANGE is detected, OUT 1 The device is capable to detect a fault on the...
  • Page 31 ERROR MESSAGES 2) If error 400 is detected, push contemporarily the s and t pushbuttons for loading the The instrument performs same self-diagnostic algorithm. default parameters then repeat control When an error is detected, the instrument shows parameter setting. on the lower display the “Err” indication while the 3) When an error 302 is detected, push contemporarily the s and t pushbuttons for upper display shows the code of the detected...

  • Page 32: General Informations

    GENERAL INFORMATIONS 50081-2 and EN-50082-2) and to council directives 73/23/EEC and 93/68/EEC (reference harmonized standard EN 61010-1). GENERAL SPECIFICATIONS Installation category: II Case: PC-ABS black color; self-extinguishing de- Temperature drift: (CJ excluded) gree: V-0 according to UL 94. < 200 ppm/°C of span for mV and TC ranges 1, 3, 5, Front protection - designed and tested for IP 65 (*) 7, 21, 22, 23, 25.
  • Page 33 STANDARD RANGES TABLE C) LINEAR INPUTS Read-out: keyboard programmable between -1999 Ranges and +4000. type Decimal point: programmable in any position Burn out: the instrument shows the burn out condi- 0/ +400.0°C tion as an underrange condition for 4-20 mA, 1-5 V 0 / + 1650 °F 0 / + 900°C and 2-10 V input types.
  • Page 34 NOTES Integral pre-load: 1) Use an external contact with a contact rating - from 0.0 to 100.0 % for one control output better than 0.5 mA, 5 V DC. - from -100.0 (cooling) to +100.0 % (heating) for 2) The instrument needs 100 ms to recognize a two control output.
  • Page 35 Output level limiter(for control outputs): Process alarm: - For one control medium: from 0.0 to 100.0 % . Operative mode : High or low programmable. - For two control mediums: from -100.0 to +100.0% Threshold : programmable in engineering unit within the input span.

  • Page 36: Maintenance

    MAINTENANCE 1) REMOVE POWER FROM THE POWER SUPPLY TERMINALS AND FROM RELAY OUTPUT TERMINALS 2) Remove the instrument from case. 3) Using a vacuum cleaner or a compressed air jet (max. 3 kg/cm ) remove all deposit of dust and dirt which may be present on the louvers and on the internal circuits trying to be careful for not damage the electronic components.

  • Page 37: Default Parameters

    PARAMETER DEFAULT VALUE APPENDIX A = minimum range-value DEFAULT PARAMETERS Snrt = Disable n.rSt = OFF DEFAULT OPERATIVE PARAMETERS SP2, SP3, SP4 = minimum range value The control parameters can be loaded with = OFF predetermined default values. These data are the A1, A2, A3 = minimum range-value for typical values loaded in the instrument prior to...
  • Page 38 = 1.00 for P25 = AIr DEFAULT CONFIGURATION PARAM- 0.80 for P25 = OIL ETERS 0.40 for P25 = H2O The configuration parameters can be loaded with OLAP predetermined default values. These data are the = initial scale value typical values loaded in the instrument prior to = full scale value shipment from factory.
  • Page 39 After about 3 seconds the loading procedure is 00.20 00.20 terminated and the instrument reverts to display "COnF". PARA. TABLE 1 TABLE 2 bUnP bUnP SEr 1 SEr 2 SEr 3 19200 19200 nO.FL nO.FL SEr 4 ----. ----. 1200 2190 Fn.SP Fn.SP...
  • Page 40 Appendix A.4...

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