TLV SC-F70 Operating Instructions Manual
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TLV SC-F70 Operating Instructions Manual

Multicontroller
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Manufacturer
Multicontroller
SC-F70
SC-F70
Temperature Control
Operating Instructions
172-65279M-00

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Summary of Contents for TLV SC-F70

  • Page 1 Manufacturer Multicontroller SC-F70 SC-F70 Temperature Control Operating Instructions 172-65279M-00...

  • Page 2: Table Of Contents

    7.5 Troubleshooting Pressure Sensor Problems ......88 7.6 Troubleshooting Area Switching External Contact Problems .. 89 7.7 Troubleshooting External Analog Input Problems ....90 7.8 Troubleshooting Communication Problems ......91 7.9 Troubleshooting Other Problems ..........92 SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 3 8. PID Constants Manual Tuning Method ..........94 8.1 Manual Setting Method .............. 94 8.2 Step Response Method ............... 95 8.3 Ultimate Sensitivity Method ............96 9. Specifications ..................97 10. Product Warranty ................106 SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 4: Preface

    The book will be updated from time to time according to improvements made to the product. But if you find a discrepancy between the descriptions in this book and actual operation, and need help, contact TLV. SC-F70 SC-F70  ...

  • Page 5: Checking The Model Code And Accessories

    3. A mounting hardware set (2 brackets) 4. The Operating Instructions for Communications (When communication feature is specified) If the model code differs from your order, or accessories are missing or damaged, please contact TLV immediately. SC-F70 SC-F70    ...

  • Page 6: Introduction And Installation

    Running in Remote Mode mode (see page 47). ∑ Runs using alarms, transmission output, or Using Other Functions communications (see page 54). ∑ Resolves problems you may encounter (see page Troubleshooting 76). SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 7: Setting Feature Jumpers

    If BOTH of the following conditions are met, there is NO need to check the jumper setting. You can go to "1.3 Attaching to the Panel" directly. 1. The temperature sensor to be used is a TR1 obtained from TLV. 2. Remote analog setting operation is not used.
  • Page 8 Measurement Input Selection Jumper Current Input Voltage Input Voltage Input (Low) Thermocouple (High) [Figure 2. Jumper Setting Guide] 5. Restore the body into the case, and make sure it latches firmly at the stopper. SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 9: Attaching To The Panel

    These figures show the sizes of the controller and the panel cut needed to fit the controller in millimeters (in inches). 12 (0.472") 100 (3.937") Panel Cut Sizes +0.8 +0.031" 25 (0.984") or more (3.622        ) 96 (3.780") -0" SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 10 5. Repeat steps 3 and 4 to insert the other bracket on the bottom of the controller and fasten it in place. Fastening Screw Bracket Leg Insert [Figure 1] [Figure 2] SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 11: Wiring Procedure

    If the signal source is grounded, ground only the side closest to the signal source. Controller Signal source b. If the signal source is not grounded, ground the controller side. Signal source Controller SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 12 2.) It will take about 3 seconds for the controller to prepare for contact output when the power is turned on. When using the controller to send a signal to an external interlock circuit or other circuits, add a delay relay. SC-F70 SC-F70    ...
  • Page 13 0.75 or larger * American Wire Gage Warning Do not turn on power supply to the value with which this controller will be used until instructed to do so in section 3.1 "Test Operation". SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 14 The next diagram shows a minimum configuration and its wiring. This is the simplest configuration in which basic operations can be performed; using the TR1 sensor shipped with the controller from TLV. (Other possible connections are shown on the next page.) TR1 Temperature Sensor Power Terminals...
  • Page 15 HIGH power source 4-20mA 4-20mA 4-20mA+DC24V 0-5V 0-20mA 1-5V 4-20mA 0-10V No.4 Alarm Terminals 0-10mV Relay contact 0-100mV 0-1V output Thermocouple No.2 Transmission Output Terminals Current output 4-20mA [Figure 2. Full Configuration] SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 16: Using The Panel

    This chapter shows how to use the keys and how to read messages displayed on the LEDs, and explains how to enter the necessary data. 2.1 Names and Functions on the Panel : LED Display : Keys SC-F70 FAIL DISP A.SEL AREA...
  • Page 17 ∑ Refers to or sets a parameter group Parameter key PARA ∑ Registers the new setting Enter key ∑ Increments a setting value Up key ∑ Decrements a setting value Down key ∑ Changes operation modes Mode key MODE SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 18: Guides For Using Keys

    Go to " Key Operation Flow" on page 22. PARA 5) If you want to know or change the mode of operation: Go to " MODE Key Operation Flow" on page 23. SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 19 Key Operation Flow DISP At any time, pressing the key displays the following DISP controller values: Other than DISP status DISP SC-F70 Measurement value 測定値 Target value 目標値 The first digit indicates the area number. DISP A.SEL AREA PARA MODE...
  • Page 20  ENT number for the operation. Other than Works in LOC mode only status A.SEL A.SEL Confirms selection SC-F70 SC-F70 測定値 測定値 Measurement value Measurement value Target value Target value 目標値 目標値...
  • Page 21 AREA the contents of each item, and in combination with the keys, you can change these values. Other than status AREA AREA SC-F70 SC-F70 SC-F70 Target value New Target value New Target value 目標値 新目標値 新目標値...
  • Page 22 12 PARA parameter groups. With the keys and the key, you can change the value of the parameter.  ENT Other than  PARA status  PARA  ENT SC-F70 SC-F70 SC-F70  ENT Coefficient Bias バイアス 係 数 DISP A.SEL AREA...
  • Page 23 When current mode is LOC/MAN MODE Display state ∑   selects the SC-F70 SC-F70 Measurement value Measurement value mode shown blinking Target value in the set value LED. ∑ 4 modes available DISP A.SEL...
  • Page 24 MODE Blinking SC-F70 SC-F70 Measurement Value Measurement Value  ENT Target Value AT:Blinking AUT:Lit DISP A.SEL AREA PARA DISP A.SEL AREA PARA MODE MODE When you press the key while Aton is blinking, auto-tuning starts. Then the AUT lamp comes on and the AT lamp blinks to indicate that auto-tuning is in operation.
  • Page 25 When current mode is REM/MAN MODE Display state SC-F70 SC-F70 Measurement value Measurement value Target value  ENT AUT REM DISP A.SEL AREA PARA DISP A.SEL AREA PARA MODE MODE [New MODE : REM/AUT] MODE Display state SC-F70 SC-F70 Measurement value...

  • Page 26: Operation

    2 Set the controller in LOC mode by referring to " MODE Operation Flow" on page 22. If the REM indicator lamp is off, it is already in LOC mode, so you can omit this step. SC-F70 SC-F70    ...
  • Page 27 3 Press PARA SC-F70 The display changes to: PV: Group number (PG01) SV: Group name (VcGr) FAIL Symbol: Blank DISP A.SEL AREA PARA MODE 4 Press   once. SC-F70 The display changes to: PV: Group number (PG01) SV: Content value of the item No.1,...
  • Page 28 6 Press to register the new value. SC-F70 * The decimal point will stop blinking. * If the value contains no decimal fraction, the decimal point next to the last digit will disappear. DISP A.SEL AREA PARA MODE 7 Press to go to the next item.
  • Page 29 * By referring to steps  4  to  7  , set all the items for PG02 in the same manner. 10 When item number 7(decimal position) of PG02 is entered, basic parameter setup is complete. Press to exit set-up mode. DISP SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 30 ∑ ∑ ∑ ∑ ∑ If you need to use a pressure unit different from the one specified on the coefficient plate, see "How to Convert Valve Coefficients" on page 62. SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 31 ˚ ˚ 0.0~700.0 0.0~400.0 ˚ ˚ 0.0~999.9 0.0~600.0 20mA Current Input ˚ ˚ 0.0~700.0 0.0~400.0 20mA ˚ ˚ 0.0~600.0 0.0~300.0 ˚ ˚ 0.0~900.0 0.0~500.0 ˚ ˚ 0.0~600.0 0.0~300.0 ˚ ˚ 0.0~999.9 0.0~600.0 SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 32: Test Operation (Loc/Man Mode)

    ® ® ® ® ® Running the Test Operation You can run the test operation by following two procedures: 1. Verifying the valve actions in the MAN mode 2. Setting the PID constants by running auto-tuning SC-F70 SC-F70    ...
  • Page 33 If either or both are on, change the mode to LOC/MAN by referring to "Mode Key Operation Guide" on page 23. ∑ Set the valve control output to 0 %. 1 Press several times until the Symbol DISP SC-F70 Measurement value Display shows OUT. INPUT symbol display 2 Press...
  • Page 34 ∑ Check that no steam flows to the secondary of the control valve, because the control valve is shut. ∑ By pressing , adjust the valve SC-F70 control output value to get the desired temperature of everyday operation. ∑ In the same manner, adjust the control output for other possible production temperatures.
  • Page 35 Therefore, if a temperature higher than the target temperature or the oscillation impedes your production, you must either lower the target temperature or do manual PID setting by referring to "Setting the PID Constants Manually" on page 94. SC-F70 SC-F70    ...
  • Page 36 Step Action ∑ With the key, choose an Area that you are A.SEL SC-F70 going to set a target value and PID constants for. * Refer to " Key Operation Guide" on page 20. A.SEL DISP A.SEL AREA PARA MODE ∑...
  • Page 37 Step Action ∑ Start auto-tuning SC-F70  1 Press the Key several times until " " MODE is displayed, blinking. DISP A.SEL AREA PARA MODE  2 Press ∑ Auto-tuning starts with the current Area (preselected). SC-F70 ∑ The AT lamp starts blinking to show that auto-tuning is running.

  • Page 38: Automatic Operation (Loc/Aut Mode)

    (If either or both of them are on, set their modes to MAN and LOC, respectively, by referring to "Mode Key Operation Flow" on page 23.)  2 Press AREA SC-F70 The display should look like the example at right. PV: Area group symbol (AG 1) SV: Target setting value (0.00)
  • Page 39 Step Action ∑ Select AUT mode.  1 Press MODE SC-F70 AUT appears blinking in the SV display part. DISP A.SEL AREA PARA MODE   SC-F70  2 Press The controller switches to AUT mode and turns on the AUT lamp. The display changes to the display state automatically.
  • Page 40 Step Action ∑ Change the target value while the operation is in process. SC-F70 1 Press AREA * The display shown at right appears. DISP A.SEL AREA PARA MODE 2 Press to set the new target value, SC-F70 and press to register the change.

  • Page 41: Area Switching Automatic Operation (Loc/Aut Mode)

    Action ∑ Select LOC/MAN mode. * If you need instruction, see page 22. ∑ Set up the areas. * See page 20. SC-F70 1 Press AREA Target value The panel looks like the example at right: PV: Area group symbol (AG 1)
  • Page 42 Step Action ∑ Select the new area group number you want to use. * Refer to page 20. SC-F70 1 Press A.SEL * If group 2 is in process, the example shown at right appears. DISP A.SEL AREA PARA PV: Current measurement value (100.0) MODE Symbol: Area number.
  • Page 43 P=0.0. Sets differential time for the control output. Differential time A value of 0 sets 0 to 3600 sec. proportional action. * This item is not displayed when P=0.0 or I=0. SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 44 1. The soft-start time units can be set by the parameter PG10/SVGr, item No. 3 (see page 71). The factory default units are hour.minute. 2. Refer to "3.5 Compensation of Control Responsiveness" on page 45 for selecting a value. SC-F70 SC-F70    ...

  • Page 45: Compensation For Control Responsiveness

    Step Action  1 Press the key until the Area number you AREA want to set is displayed. SC-F70  2 Press the   key until " " is displayed. DISP A.SEL AREA...

  • Page 46: Pid Constants Fine Tuning Method

    1. The first peak fluctuation of the control temperature caused by external disturbance becomes smaller. 2. Oscillation becomes suppressed. The oscillation damping ratio increases, but it decreases again if the D value is increased too much. 3. The oscillation cycles shorten. SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 47: Remote Operation (Rem/Aut Mode)

    Improper setting of the parameter PG05/AiGr may produce unexpected controller output. 3. Connect the analog input device by referring to the following figure and tables. External contacts Back panel terminals No voltage contact 0-5V,1-5V Analog input signal 0-10V,0-20mA 4-20mA SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 48 Contact Action Mode Switches To Close to open LOC mode (about 2 seconds later) No.12 - No.13(Di1) Open to close REM mode (about 2 seconds later) Analog input signal No.15 - No.16 SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 49 Note: The analog input signal fluctuation must be less than 0.1 % F.S. If the fluctuation exceeds this, the controller may accept the fraction as a new set value, which can cause a hunting problem in the valve actuator. SC-F70 SC-F70    ...

  • Page 50: Remote Area Switching Operation

    COM (—) COM (—) Area 4 D Di2 4 D Di2 4 DDi2 Area Area 2 B Di3 2 B Di3 2 B Di3 1 A Di4 1 A Di4 1 A Di4 SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 51 1. The new value given by the external contacts becomes effective after about 2 seconds. 2. Mode switching requests are honored by detecting a status change . 3. An area number is determined only by the status of the contact points. SC-F70 SC-F70    ...
  • Page 52 13 - 16 (Di4) Note: 1. The new value given by the external contacts becomes effective after about 2 seconds. 2. An area number is determined only by the status of the contact points. SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 53 MAN Æ AUT switching (External contact) 1 If Dil contact point is open, close it; if closed, open and close it. From now, the new area number set by the external contacts is used by the controller. SC-F70 SC-F70    ...

  • Page 54: Using Other Convenient Functions

    Four alarm points (AL1 to AL4) can be used and should be wired as shown in the diagram. AL1, AL2 Relay contact Back Panel Terminals Relay contact Relay contact Note: Relay contact numbers shown here correspond to the indicator lamps on the operation panel. SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 55 3. Alarm relay contact is open for no alarm state, and is closed when alarm condition meets. 4. Inputs to be monitored are measurement input, analog setting input, and area switching input. SC-F70 SC-F70  ...
  • Page 56 Timer: Delays the alarm output activation. Hysteresis: Delays the alarm output deactivation. Use of these timer and hysteresis delays provides additional control to prevent frequent alarm activation due to the unstable pressure. SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 57: Using The Transmission Output

    Item No.1 is for first transmission output, and item No. 4 is for second transmission output. 0: Measurement value 1: Deviation value 2: Target set value 3: Valve control output value SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 58: Using The Communications Function

    ∑ EIA RS-485: 2-wire multidrop connection ∑ EIA RS-232C: 3-wire point-to-point connection See page 102 for other specifications. For operation details, refer to the "SC-F70 Multicontroller Operating Instructions for Communications" booklet. 5.4 Using Other Convenient Features The following commonly used features enable more sophisticated operation.

  • Page 59: What To Do When Power Is Lost

    DC 0 mA, and, as a result, the secondary pressure is also lost as the valve tends to close. To shut down the steam supply in the cases of 1 and 2 above, install an additional shutdown valve, which closes when power is lost. SC-F70 SC-F70    ...

  • Page 60: Summary Of Parameter Groups And Areas

    Warning: You must enter the correct settings for your system. With the factory default settings only, the controller cannot control the system correctly. Also, if improper values are entered, the system will not work as expected. SC-F70 SC-F70    ...
  • Page 61 ∑ ∑ ∑ ∑ ∑ If you need to use a pressure unit different from the one specified on the coefficient plate, see "How to Convert Valve Coefficients" on page 62. SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 62 New units (F=2) (F=3) Current units (F=0) (F=1) 1.42230 0.98067 — 0.98067 kg/cm (F=0) 1.45040 1.00000 barG (F=1) 1.01970 — — 0.68948 0.70307 0.68948 psiG (F=2) 1.45040 — kPaG (F=3) 1.01970 1.00000 SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 63 Coefficient E=594 x 1.42230=844.8462=845 Note: Round the value to a whole number (no decimals). 3. The new valve coefficients A to F are as follows: d: 1425 SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 64 ˚ ˚ 0.0~700.0 0.0~400.0 ˚ ˚ 0.0~999.9 0.0~600.0 20mA Current Input ˚ ˚ 0.0~700.0 0.0~400.0 20mA ˚ ˚ 0.0~600.0 0.0~300.0 ˚ ˚ 0.0~900.0 0.0~500.0 ˚ ˚ 0.0~600.0 0.0~300.0 ˚ ˚ 0.0~999.9 0.0~600.0 SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 65 0.0. For current For current control output: output: Sets the renewal period for Time proportional 0.0~100(seconds) control output. *When set to 0, period minimum 250 seconds. SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 66 0-600 sec. the value enters the alarm range Timer for AL3 and the time the alarm goes on. Selects the type of alarm for 0-14 Type for Alarm 4 AL4. (Note 1) SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 67 4. Exciting refers to the excitation of the alarm relay when an alarm condition is met, resulting in the N/O contact of the alarm relay to close. Conversely, non-exciting means the NO contact will open. 5. Use the same unit specified in the measurement input unit (˚C or ˚F) SC-F70 SC-F70    ...
  • Page 68 0: MAN/AUT changing and analog setting input 1: LOC/REM changing and analog setting input On models equipped with area switching contact input: 0: MAN/AUT changing and area selection 1: LOC/REM changing and area selection 2: Area selection SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 69 Upper limit for span limit (˚C or ˚F) Note 1 transmission output 2 Ao2=3: 0~100% 2.AH (2.AL < 2.AH) Note: Use the same unit specified in the measurement input unit (˚C or ˚F). SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 70 2. When 1, 2, or 3 is specified in this item, and an auto-tuning error occurs, an error code (E11 to E13) is displayed. 3. Even if power restoration mode has been selected, mode selection with the external contact input, if used, overrides. SC-F70 SC-F70    ...
  • Page 71 Down deviation 0:All unlocked Setting lock Selects which settings are 1:Parameter locked. settings locked 2:All locked Note: Use the same unit specified in the measurement input unit (˚C or ˚F). SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 72 Sets the gain coefficient for Gain coefficient 0.00~1.00 non-linear PID action. 1.00 * Displayed when PSL=1. 0~measurement Sets the gap for non-linear span or PID action. 9999 * Displayed when PSL=1. SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 73 2. Baud rates Setting Parity bits Data bits Stop bits None 0: 1200 bps None 1: 2400 bps Even 2: 4800 bps Even 3: 9600 bps 4: 19200 bps None None Even Even SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 74: Areas

    P=0.0. Sets differential time for the control output. Differential time A value of 0 sets 0 to 3600 sec. proportional action. * This item is not displayed when P=0.0 or I=0. SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 75 1. The soft-start time units can be set by the parameter PG10/SVGr, item No. 3 (see page 71). The factory default units are hour.minute. 2. Refer to "3.5 Compensation of Control Responsiveness" on page 45 for selecting a value. SC-F70 SC-F70    ...

  • Page 76: Troubleshooting

    Generally, the controller system problems are categorized as follows: Controller problem Valve control problem Sensor problem Remote external input problem Communication problem Each of them has the characteristics described in the following pages. SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 77 There are three types of external contact problems. ∑ External contact or wiring problems ∑ External analog input device or wiring problems ∑ Setting errors or outside specifications usage SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 78 No error-displayable Was controller controller problem panel display lit ? Go to page 84 Can you read the panel display ? Did the FAIL Error-displayable lamp come on ? controller problem Go to page 81 Continued on next page SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 79 Did any error ∑ Blinking display controller problem appear ? ∑ FAIL lamp on Go to page 81 Does system No error-displayable operate correctly controller problem as set in area ? Go to page 84 Continued on next page SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 80 ? ∑ FAIL lamp on Go to page 81 External analog Does the operation setting input problem work correctly ? Go to page 90 Use the communication function (See SC-F70 Only when this Communication Manual). option is installed. Does Communication communication problem work OK ? Go to page 91...

  • Page 81: Troubleshooting Errors Displayed

    7.2 Error-displayable Controller Problems Check the error code and its displayed location, and take action. SC-F70 Measurement Display Set value Symbol FAIL Indicator lamp DISP A.SEL AREA PARA MODE Where Error Description Error Code Action The pressure sensor signal is 100% to 105% or -5 1.
  • Page 82 The error message is displayed until the DISP key is pressed; operation will follow the selection made for operation in the event of an autotuning error (See parameter PG08 on page 70). SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 83 All controller outputs are turned off. ROM error or CPU power error or watchdog FAIL timer error occurred. All other indicators are lights turned off. All controller outputs are also turned off. SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 84: Troubleshooting No Error Displayed Problems

    A analog setting input signal Insert an isolator, etc. to ensure that has been entered in parallel to an insulated analog setting signal is multiple SC-F70 units using a input to each unit. grounded thermocouple. Measured value Make sure the setting for...
  • Page 85 Set the PID constant manually. An output change rate limiter Set the output change rate limiter has been set. to 0.0 (only if the output change rate limiter may be changed). SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 86 Make sure the type of alarm, Reset these values to the ones you faultly. excitation, hysteresis setting, want by referring to "Alarm Setup or alarm timer are selected Procedure" on page 56. correctly. SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 87: Troubleshooting Valve Control Problems

    Note: Even if the output is in current mode, measure it cable assembly from the in DC voltage. controller to the valve is not open. The output voltage changes proportionally with the target value settings. SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 88: Troubleshooting Pressure Sensor Problems

    Note: This guide assumes that a TR1 sensor, supplied from TLV, is used. If another sensor or measurement input type is used, contact TLV for additional guidance. 1. Reconfirm that the temperature value indicated on the thermometer is correct. ∑ If the setting is not correct, 2.

  • Page 89: Troubleshooting Area Switching External Contact Problems

    1. Ensure your controller is equipped with the remote area switching feature. function cannot be used. Model code = SC-F70- The second-to-last digit should be a D. ∑ If the setting is incorrect, 2. Check that the setting in item 1 of the parameter PG06 correct it.

  • Page 90: Troubleshooting External Analog Input Problems

    1. Ensure your controller is equipped with the remote analog input feature. function cannot be used. Model code = SC-F70- The second-to-last digit should be an A. ∑ If the settings are incorrect, 2. Check that the settings in all items of the parameter correct them.

  • Page 91: Troubleshooting Communication Problems

    ∑ If the code is different, this 2. Ensure that your controller is equipped with the function cannot be used. communication functions. Model code = SC-F70- 1 (RS-232C) SC-F70- 4 (RS-422A) SC-F70- 5 (RS-485) The last digit should be either 1, 4, or 5.

  • Page 92: Troubleshooting Other Problems

    ∑ Is the secondary pressure limited to 10% - 84% of the readjustment of the steam primary? pressure supply conditions. ∑ Is secondary pressure below the maximum allowable pressure differential? ∑ Is secondary pressure above the minimum allowable pressure differential? SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 93 Valve opening: Minimum allowable measured secondary pressure F kg/cm G (psig) e. Contact TLV and provide values A to F. SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 94: Pid Constants Manual Tuning Method

    10.Verify that the control responsiveness is satisfactory by changing the target setting value. Note: If the results do not meet your requirements, change the PID values by referring to "3.6 PID Constants Fine Tuning Method" on page 46. SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 95: Step Response Method

    AUT mode and verify its control responsiveness. Note: If the results do not meet your requirements, change the PID values by referring to "3.6 PID Constants Fine Tuning Method" on page 46. SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 96: Ultimate Sensitivity Method

    AUT mode and verify its control responsiveness. Note: If the results do not meet your requirements, change the PID values by referring to "3.6 PID Constants Fine Tuning Method" on page 46. SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 97: Specifications

    Within ± 4 V Input voltage range: 4. DC voltage (HIGH) input Input values: 0-5 V, 1-5 V, 0-10 V Input impedance: Approximately 1 MW Within ± 12 V Input voltage range: SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 98 AREA switching method: * Using keys on front panel * Through external contacts when model is equipped with area switching external input feature * Through communications when model is equipped with communication feature SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 99 DC current output 1. Output: 4-20 mA 2. Load resistance range: 600W maximum 3. Output impedance: 5 MW minimum ± 0.1% of span 4. Output accuracy: 5. Output resolution: 11 bit minimum SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 100 AL4) 9.7 Transmission Output (1) Number of output points: 2 points (2) Output types (selectable): Measured value, set value, deviation, or control output (3) Output signal: DC 4 mA to 20 mA SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 101 500 kW minimum Resistance when CLOSED: 10W maximum 3. Voltage when OPEN: DC 5 V 4. Functions (selectable) a. MAN/AUT selection + area selection b. LOC/REM selection + area selection c. Area selection SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 102 Note: Depending on host computer driver capability, the maximum number might not be supported. 2. RS-485: 32 units including host computer 3. RS-232C: 1 unit (8) Communication code: ASCII (JIS) 7-bit code SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 103 (9) Terminals 1. RS-422A, 4-wire Terminal No. Signal SC-F70 <Signal Direction> Host Remarks ← R(A) Receive data ← R(B) Receive data → Transmit data T(A) → T(B) Transmit data ←→ Signal ground 2. RS-485, 2-wire Remarks Signal Terminal No. SC-F70 <Signal Direction> Host...
  • Page 104 AC 100V to AC 240 V (4) Power consumption: 10 VA at AC 100V 13 VA at AC 240V (5) Effect of power outage: No effect on operation if power outage is 50 msec. or less SC-F70 SC-F70     Temperature Control Operating Instructions...
  • Page 105 9.13 Shipping and Storage Conditions (1) Temperature: -20 to 70˚C (-4 to 158˚F) (2) Humidity: 95% RH maximum, no dew (3) Vibration: 5 m/sec (16.4 ft/sec (4) Shock: 100 m/sec (328 ft/sec SC-F70 SC-F70     Temperature Control Operating Instructions...

  • Page 106: Product Warranty

    One year following product delivery. 2. Warranty Coverage TLV Co., Ltd. warrants this product to the original purchaser to be free from defective materials and workmanship. Under this warranty the product will be repaired or replaced, at our option, without charge for parts or labor.
  • Page 107 SC-F70 SC-F70     Temperature Control Operating Instructions...

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