Current Input; Frequency Signal (Pulse Train) - Process Technology DQ15D Installation, Operation And Calibration Manual

Calibration

Current Input

Optional PCN 5447 or 5416 board
needed. The DQ15D control
measures 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 Dip
Switch Settings in
(Setup).
• Terminal 1 is positive, terminal 2
is negative.
Equipment needed
• 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 adjustable 0-10
volt or better output and,
• 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 when power is
on.
Calibration Procedure
Turn OFF all power.
1
Remove rear cover.
2
Remove input leads.
3
Install the 0-20 mA DC calibra-
4
tor or the power supply, resistor
and ammeter in series with terminal
#1 and #2.
M-34-01
Revision - Date: 01 - 04/23/08
Configuration
CAREFULLY restore power to
5
the controller, ensuring that you do
not come in contact with any
exposed voltage.
Press and
6
and hold for approximately 6
seconds. The screen displays
While the 0 is flashing, use
change this to 22. Press
screen then displays
Adjust the calibrator or power
7
supply to 5.0 mA.
Press and hold
8
second. The screen displays
Wait for it to change to
Adjust power supply to 20.0 mA.
9
Press and hold
10
second. The screen displays
Wait for display to reset and
display 20.0.
Turn OFF power to the control
11
and remove the power supply.
Reinstall the voltage input and
12
the DQ15D rear cover and return
the calibrated DQ15D to service.
Frequency Signal (Pulse
Train)
The DQ15D measures frequency
and compares it with a standard set
of values derived from the
microprocessor oscillator.
Equipment needed
Optional PCN 5447 or 5416 board
needed.
Calibration Procedure
Since this is a dedicated frequency,
no field calibration is possible.
Check that the DIP switches are set
to OFF, OFF, OFF. See Dip Switch
Settings in
Configuration (Setup)
14
simultaneously
.
AC.0
to
The
.
SET
.
CAL1
for one
SET
.
Hold
.
CAL2
T for one
SE
.
Hold
.
DQ15D Manual