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Proheat 8500 Series Instructions Manual

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INSTRUCTIONS FOR THE 8500 SERIES
MICROPROCESSOR BASED
TEMPERATURE CONTROL
December, 1998
Page 1
949-1275-1

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  • Page 1 INSTRUCTIONS FOR THE 8500 SERIES MICROPROCESSOR BASED TEMPERATURE CONTROL December, 1998 Page 1 949-1275-1...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS MODEL IDENTIFICATION ..............4 INSTALLATION ..................4 WIRING ....................5 FRONT PANEL KEY FUNCTIONS ............6 MENU SELECTIONS ................8 PRIMARY MENU ..................8 SECONDARY MENU ................8 SECURE MENU ..................10 ALARM TYPE AND ACTION ..............12 SPECIFICATIONS ................

  • Page 3: Getting Started

    GETTING STARTED 1. Install the control as described on page 4. 2. Wire your control following the instructions on page 4 and drawing on page 5. 3. Most controls do not need many (if any) program changes to work on your process.

  • Page 4: Model Identification

    MODEL IDENTIFICATION Model 8 5 — Alarm Input Output Orientation 0 = No 1 = Thermocouple, J,K,T,E,N,L 1 = SSR 0 = Vertical 1 = Yes 2 = RTD, DIN, NIST, Ni 120 2 = 5 VDC 1 = Horizontal 3 = Relay 5 = Current INSTALLATION...

  • Page 5: Wiring

    WIRING Do not run thermocouple or other input wiring in the same conduit as power leads. Use only the type of thermocouple or RTD probe for which the control has been programmed. Maintain separation between wiring of sensor, auxilliary in or out, and other wiring. See the "Secure Menu" for input selection.

  • Page 6: Front Panel Key Functions

    FRONT PANEL KEY FUNCTIONS Set Point Lamp Alarm Lamp Temperature Display °F Indicator °C Indicator Set Point Display Decimal point on lower display flashes The °F/°C indicator while ramping func- will flash while Self- tion is active. Tune is operating. Key functions are as follows: INDEX: Pressing the INDEX key advances the display to the next menu item.

  • Page 7: Security Level Selection

    While in the Primary or Secondary menu, if no key is pressed for a period of 30 seconds, the display will return to the HOME position displaying the temperature value. The time is increased to 1 minute when in the Secure menu. NOTE: To move to the primary menu quickly from any other menu, press the UP ARROW &...

  • Page 8: Menu Selections

    MENU SELECTIONS PRIMARY MENU Press INDEX to advance to the next menu item. Press UP ARROW or DOWN ARROW to change the value in the display. Press ENTER to retain the value. Set Point Adjust, Control Point. SECONDARY MENU Hold UP ARROW & ENTER. Press INDEX to advance to the next menu item.
  • Page 9 outputs. Set the value for the amount of temperature difference between the turn off point (set point) and the turn on point. Only appears if CY is set to ONOF. Fixed at ProP. For Current (Code 5) outputs only. tunE Tuning Choice: Select SELF or Pid.

  • Page 10: Secure Menu

    compensate for sensor error. Note: InPC is reset to zero when the input type is changed, or when decimal position is changed. FiLt Digital Filter: Select OFF, 1 to 99. In some cases the time constant of the sensor, or noise could cause the display to jump enough to be unreadable.
  • Page 11 returns to the decimal point range, the display will autorange back to tenth dergee resolution. InPt Input Fault Timer: Select OFF, 0.1 to 540.0 minutes. Whenever an Input is out of range (UFL or OFL displayed), shorted, or open the timer will start.

  • Page 12: Alarm Type And Action

    ALARM TYPE AND ACTION (if present) Caution: In any critical application where failure could cause expensive product loss or endanger personal safety, a redundant limit controller is required. When setting an alarm value for an absolute alarm (ALt = AbS), simply set the value at which the alarm is to occur.
  • Page 13 The following menu items apply only to the alarm. Alarms: Select OFF, Lo, Hi, or HiLo. Alarms are turned OFF. No Alarm menu items appear in the Secondary and Secure menus. Low Alarm Only. ALLo appears in the Secondary Menu. High Alarm Only.

  • Page 14: Specifications

    SPECIFICATIONS Selectable Inputs: Thermocouple or RTD as ordered. Input Impedance: Thermocouple = 3 megohms minimum. RTD current = 200 µA. Sensor Break Protection: De-energizes control output to protect system. Set Point Range: Selectable (See range chart page 12 ). Display: Two 4 digit, 7 segment; vertical 7.62mm (0.3") high LEDs; horizontal 10mm (0.4") high LEDs.

  • Page 15: Diagnostic Error Messages

    DIAGNOSTIC ERROR MESSAGES DISPLAY MEANING SP OUTPUTS ACTION REQUIRED Underflow or Overflow: Set point Input signals may normally go above Process value has ex- output active or below range ends. If not, check ceeded input range Alarms active input and correct. ends.

  • Page 16: Dimensions

    DIMENSIONS INPUT RANGES Thermocouple Types Type K Type T Type E Type N Type J or L Input Type Range -200 to +2500 -350 to +750 -100 to +1800 -100 to +2372 -100 to +1600 1°F -129 to +1371 -212 to +398 -73 to +982 -73 to +1300 -73 to +871...

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