Current Input Calibration - Process Technology DQ15D Instruction Manual

Step 5: CAREFULLY restore power to the controller, ensuring
that you do not come in contact with any exposed voltage.
Step 6:
Press the increase " " and decrease " " keys simulta-
neously and hold for approximately 6 seconds. The dis-
play will indicate "AC.0". while the "0" is flashing, use
the increase key to change this to "22". Press the "SET"
key. The control display will read "CAL1".
Step 7: Adjust the power supply to 1.0 volts.
Step 8: Press and hold the "SET" key for one second. The display
will read "HoLd". Wait for display to change to "CAL2".
Step 9: Adjust the calibrator to 10.0 volts.
Step 10: Press and hold the "SET" key for one second. The display
will read "HoLd". Wait for display to reset and display 10.0.
Step 11: Turn OFF power to the control and remove the calibrator.
Reinstall the voltage input and the rear cover of the
control. Return the calibrated control to service.

Current Input Calibration

Optional PCN 5447 or 5416 board needed. The DQ15D control mea-
sures the DC current and compares that measurement with a "standard"
set of values in the control memory. To restore, update or merely verify
that this "standard" set of values is correct, do the following:
Check that the DIP switches are set to OFF, OFF, ON (see page 29).
Terminal 1 is positive, terminal 2 is negative.
Equipment needed:
1. A precision, NIST traceable, 0-20 mA DC current calibrator OR
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2. A precision, NIST traceable, digital ammeter or DMM and:
a. a regulated linear DC power supply with an adjustable
0-10 volt or better output and,
b. a 400 ohm, 0.1% or better tolerance, precision resistor.
WARNING!
Calibration procedures require the removal of the rear cover of the
control. It also requires that power is ON, exposing the technician to
potentially lethal voltages. Exercise EXTREME CARE and wear
tested electrician's gloves whenever power is on.
Calibration procedure for a current input:
Step 1: Turn OFF all power.
Step 2: Remove rear cover.
Step 3: Remove input leads.
Step 4: Install the 0-20 mA DC calibrator or the power supply,
resistor and ammeter in series with terminal #1 and #2.
Step 5: CAREFULLY restore power to the controller, ensuring
that you do not come in contact with any exposed voltage.
Step 6:
Press the increase " " and decrease " " keys simulta-
neously and hold for approximately 6 seconds. The dis-
play will indicate "AC.0". while the "0" is flashing, use
the increase key to change this to "22". Press the "SET"
key. The control display will read "CAL1".
Step 7: Adjust the calibrator or power supply to 5.0 mA.
Step 8: Press and hold the "SET" key for one second. The display
will read "HoLd". Wait for the display to change to "CAL2".
Step 9: Adjust the power supply to 20.0 mA.
Step 10: Press and hold the "SET" key for one second. The display
will read "HoLd". Wait for display to reset and display 20.0.
Step 11: Turn OFF power to the control and remove the power
supply. Reinstall the voltage input and the rear cover of
the control. Return the calibrated control to service.
Frequency Signal (Pulse Train)
Optional PCN 5447 or 5416 board needed. The DQ15D control mea-
sures frequency and compares that measurement with a "standard" set of
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