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Process Technology DQ15D Instruction Manual

Digital temperature control
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DQ15D
INSTRUCTION
MANUAL
7010 Lindsay Dr., Mentor, OH 44060 • Phone: 440-946-9500
Eastern U.S./Canada: 800-621-1998 • FAX: 440-974-9561
P.O. Box 660, Mentor, OH 44061
1991 Whitney Mesa Dr., Henderson, NV 89014 • Phone: 702-450-7910
Western U.S./Canada: 800-621-1999 • FAX: 702-450-7912
www.process-technology.com

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  • Page 1 DQ15D INSTRUCTION MANUAL 7010 Lindsay Dr., Mentor, OH 44060 • Phone: 440-946-9500 Eastern U.S./Canada: 800-621-1998 • FAX: 440-974-9561 P.O. Box 660, Mentor, OH 44061 1991 Whitney Mesa Dr., Henderson, NV 89014 • Phone: 702-450-7910 Western U.S./Canada: 800-621-1999 • FAX: 702-450-7912...

  • Page 2: Table Of Contents

    In the heating mode if the sensor signal is lower than the “SP1” set point Power, Heating and Cooling Relay Wiring value, the DQ15D energizes the relay and its isolated contacts close. In the 2 Wire RTD Sensor Calibration cooling mode if the sensor signal is higher than the “SP2” set point value, 2 and 3 Wire RTD, Voltage, Current, the DQ15D energizes the relay and its isolated contacts close.

  • Page 3: Over Temperature Protection

    Insert the DQ15D through the prepared opening and slide the retaining To safeguard against these events, install over temperature protection. collar over the case from the rear of the panel. After hand tightening the This will interrupt the heater power supply in the event of low solution collar, tighten the two (2) collar screws to ensure a secure fit.
  • Page 4 Once the number begins flashing, use the increase “ ” or decrease “ ” **WARNING** key to change the value. After the new value has been established, press Over-temperature protection is necessary in any system where a fault the “SET” key once more to lock the new value into memory. condition resulting in high temperature could produce a fire or any other hazardous condition.

  • Page 5: Alarm Features

    display will alternately change between the process value and three dashes played, ºC, ºF, Hz, volts, mA or ohms, are established during the setup “---”. To return to normal “SP1” operation, either press all three keys of the control. (“ ”, “SET”, and “ ”) simultaneously, or switch OFF the remote switch wired to terminals #3 and #4.

  • Page 6: Power, Heating And Cooling Relay Wiring

    A small “c” in the lower left-hand corner indicates the control is relying Power, Heating & Cooling Relay: Wiring Procedure on default configuration values. This is a rare condition, but may occur Unit is intended for a single power source. if the control has been calibrated for use with a two-wire RTD sensor but To complete the wiring procedure, you will need these tools and materials: the configuration parameters have not been changed from their default...
  • Page 7 RTD devices are precision resistors whose resistance value varies with an input value of a single resistor (i.e. 1000 ohms), as shown. temperature. The DQ15D control measures the RTD resistance and com- pares that measurement with a “standard” set of values stored in the con- trol memory.

  • Page 8: And 3 Wire Rtd, Voltage, Current, Frequency And Resistance

    “third wire” eliminates the natural resistance of the lead wires to the resistors and the fixed end of the other resistor to improve sensor accuracy. The DQ15D control measures the RTD resis- establish an input value of a single resistor (i.e. 1000 tance (and the third wire resistance) and compares that measurement with ohms or 100 ohms), as shown.

  • Page 9: Resistance Signal Calibration

    (i.e. 2000 ohms or 200 ohms), as shown. Optional PCN 5447 or 5416 board needed. The DQ15D control mea- sures DC voltage and compares that measurement with a “standard” set of values in the control memory.

  • Page 10: Current Input Calibration

    “HoLd”. Wait for the display to change to “CAL2”. Step 9: Adjust the power supply to 20.0 mA. Optional PCN 5447 or 5416 board needed. The DQ15D control mea- Step 10: Press and hold the “SET” key for one second. The display sures the DC current and compares that measurement with a “standard”...

  • Page 11: Thermocouple Calibration

    Return the control to service. 4-20 mA Output Option The DQ15D is available with an optional 4-20 mA output signal propor- tional to the measured (displayed) temperature. PCN 5416 or 5419 board Equipment needed: needed.

  • Page 12: Configuration (Set-Up)

    Remove ONE lead of the 4-20 mA output wire and install the DMM or tester in series with the external loop and To configure the DQ15D temperature control, press the increase “ ” this terminal. OBSERVE POLARITY. and decrease “ ” keys simultaneously and hold for approximately 6 sec- Step 6: Restore power to control.

  • Page 13: Main Menu Summary

    “U1” setting. See setting summary. By using the in- This setting tells the DQ15D control what type of sensor it is using. crease “ ”, decrease “ ” buttons, it is possible to scroll through the list of settings to those needing modification.
  • Page 14 U6, “SP2” Set Point Dead Band Using a small value for this setting will cause the DQ15D control to re- spond more quickly to sudden changes in the sensor signal level, but this This setting, which may be any number from +1 to +99, represents a dead also causes the unit to be more susceptible to EMI/RFI noise.

  • Page 15: Set Point Limit (L)

    This setting may be either a one (1) or a zero (0), and controls the behav- Voltage Sensor - Number represents tenths of a volt (0.1 VDC) ior of the DQ15D by making it perform like the single set point PRO- Current Sensor - Number represents hundredths of milliamps CESS TECHNOLOGY model DE control.

  • Page 16: Sensor Dip Switch Settings

    This setting may be set to a zero (0) or a one (1). When set to one (1), the Selections DQ15D will display either a “C” or an “F”, separated by a decimal point. Type This indicates that either Celsius or Fahrenheit is being displayed. If the...

  • Page 17: Specifications

    Agency Approvals: UL/CUL Display: 4 digit, ½” (nominal) LED display. Important Note: The DQ15D is designed for indoor installations ONLY. Control Function: ON/OFF Electromechanical Relays. Control Outputs: SP1 Set Point (reverse acting). SPDT. 20A resistive @ 240 VAC maximum, 1 H.P. @ 240 VAC maximum.

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