Current Input Calibration; Frequency Signal Calibration - Process Technology DQ15D Instruction Manual

Current Input Calibration

The DQ15D control measures the DC current and
compares that measurement with a standard set of
values in the control memory.
Verify Standard Values
To restore, update or merely verify that this standard
set of values is correct, do the following:

Make sure that the DIP switch settings are OFF,
OFF, ON. See Dip Switch Settings in Configura-
tion (Setup).

Terminal 1 is positive, terminal 2 is negative.
Equipment Needed

Optional input boards, item # 5447 or 5416

A precision, NIST traceable, 0-20 mA DC current
calibrator OR a precision, NIST traceable, digital
ammeter or DMM

a regulated linear DC power supply with an ad-
justable 0-10 volt or better output and,

a 400 ohm, 0.1% or better tolerance, precision
resistor.
Calibration procedures require the removal of
the rear cover of the control. It also requires that
power is ON, exposing the technician to poten-
tially lethal voltages. Exercise EXTREME CARE
and wear tested electrician's gloves whenever
power is on.
Les procédures de calibration nécessitent
l'enlèvement du panneau arrière du contrôle.
Ça exige aussi que le courant électrique est
allumé ce qui expose le technicien à des ten-
sions potentiellement létales. Utilisez toujours
un soin extrême et portez des gants certifiés
d'électricien quand le courrant est allumé.
M-34-01-06 3/31/2016
Calibration Procedure
1 Turn OFF all power.
2 Remove rear cover.
3 Remove input leads.
4 Install the 0-20 mA DC calibrator or the power
supply, resistor and ammeter in series with termi-
nal #1 and #2.
5 CAREFULLY restore power to the controller, en-
suring that you do not come in contact with any
exposed voltage.
6 Press and
proximately 6 seconds. The screen displays AC.0.
while the 0 is flashing, use
Press SET. The screen then displays CAL1.
7 Adjust the calibrator or power supply to 5.0 mA.
8 Press and hold SET for one second. The screen
displays Hold. Wait for it to change to CAL2.
9 Adjust power supply to 20.0 mA.
10 Press and hold SET for one second. The screen
displays Hold. Wait for display to reset and display
20.0.
11 Turn OFF power to the control and remove the
power supply.
12 Reinstall the voltage input and the DQ15D rear
cover and return the calibrated controller to ser-
vice.
Frequency Signal (Pulse Train) Calibration
The DQ15D measures frequency and compares it
with a standard set of values derived from the mi-
croprocessor oscillator.
Equipment needed

Optional input boards, item # 5447 or
5416. Check that the DIP switches are set
to OFF, OFF, OFF. See Dip Switch Set-
tings in See Configuration (Setup).
Calibration Procedure
Since this is a dedicated frequency, no field calibra-
tion is possible.
10
simultaneously and hold for ap-
to change this to 22.
DQ15D/T-DQ15D Manual