The TOP LINE of the screen will then display: FLOW------%
M
ANL, which represents the water flow in percentage and also
indicates the SMARTVALVE is set for Manual (MANL)
Operation.
The BOTTOM LINE of the screen will display: VALVE 0.0 PPD
MENU, representing the gas feed at zero PPD (lbs. per day)
along with the Operational Mode Menu button. If the valve is
f
actory set for metric scale, the feed rate will be in grams (g) or
kilograms (kg) per hour (h).
IMPORTANT:
As previously mentioned, the SMARTVALVE
is in the OPERATIONAL MODE of the factory default FLOW
(Flow Proportional) Control Scheme. However, since the
OPERATIONAL procedure varies depending on which
CONTROL SCHEME the system requires, the FIRST step
necessary is to proceed to Section 5.0 (ENGINEERING
MODE) and select the proper Control Scheme for your sys-
tem. After making this selection, continue on to ALL
remaining Engineering parameters.
NOTE:
The keypad buttons will sometimes be referred to in left
to right numerical order (#1, #2, #3, #4) for easy reference.
A) TO ENTER THE ENGINEERING MODE
1) Simultaneously press and hold the #3 and #4 keypad
buttons for approximately five seconds until the TOP
LINE of the display screen reads: ENT ENG PW 0 * * *
(Enter Engineering Password).
2) Press the NEXT keypad button three times until the
factory default password (0 0 0 0) appears. Then press
ENT (enter) to accept.
3) The TOP LINE will now display the first Engineering
parameter: OPERATION---FLOW which is used to
select the preferred system Control Scheme.
NOTE:
To properly set this and all remaining Engineering
parameters, proceed to the following list which includes a
full explanation with instructions for each parameter. The
parameters are listed in the order they appear while in the
Engineering Mode and they are applicable to all Control
Schemes, with two noted exceptions pertaining to para-
meters No. 2 and 3.
B) ENGINEERING PARAMETERS
1) OPERATION
OPERATION allows the user to choose the Control
Scheme appropriate for their system. The selections are:
a) FLOW (Flow Proportional Control)
b) RES (Residual Only Control)
c) CLC (Compound Loop Control)
d) FEED FWD (Feed Forward Dechlorination)
To make your selection, press ADJ (adjust). Use the UP
or DOWN buttons to scroll to the desired selection.
Press ENTER to accept. Then press NEXT to proceed
to the following parameter.
2) CAL AIN1 (FLOW)
C
ALIBRATE ANALOG INPUT NO. 1 is for the Water
Flow Meter Input. This input has been factory calibrated
and should not need adjustment prior to startup.
NOTE:
This parameter is NOT available for RESIDUAL
ONLY Control.
3
) CAL AIN3 (RES)
CALIBRATE ANALOG INPUT NO. 3 is for the Residual
(RES) Analyzer Input. This input has been factory
calibrated and should not need adjustment prior to
start-up.
NOTE:
This parameter is NOT available for FLOW
P
ROPORTIONAL Control.
4) CAL AOUT
CALIBRATE ANALOG OUTPUT – The analog OUTPUT
may be used to transmit the SMARTVALVE output
(Gas Feed Rate) signal to another device(s). The output
has been factory calibrated and should not need
adjustment prior to start-up.
NOTE:
As mentioned, parameters No. 2, 3, and 4
have been factory calibrated and should not need
adjustment prior to startup. However, if recalibration
should prove necessary in the future, refer to
Section 9.0 (Maintenance).
5) VALVE CAL PTS
VALVE CALIBRATION POINTS refers to the number of
points (in percentage) used to Linearize (calibrate) the
SMARTVALVE to coincide with the Remote Metering
Tube. The selections are: 2, 5, 6, 11, or 15. Factory
setting is 5, which represents: 0, 25, 50, 75, & 100 percent
of the system capacity. To change the setting, press
ADJ (adjust). Scroll UP or DOWN to the desired selection.
Press ENTER to accept. Press NEXT to proceed to the
following parameter.
6) CAL VALVE
CALIBRATE (LINEARIZE) VALVE - The SMARTVALVE
is linearized at the factory prior to shipment. HOWEVER,
it is recommended to check the linearization when the
system is first started up. This will be covered in more
detail in Section 7.0 (SYSTEM STARTUP).
7) VALVE SPEED
VALVE SPEED allows the user to vary the speed of the
SMARTVALVE stepper motor as it moves the position
of the Valve Plug to adjust the Gas Feed Rate. The
selections refer to seconds per revolution. Choices
are: 0.5, 1.0, 1.5, 2.0, 3.0, 5.0, 7.5, & 10.0. Factory setting
is 1.5.
NOTE:
To change this and all remaining Engineering
parameters, simply press ADJ. Scroll UP or DOWN to
the desired value. Press ENTER to accept. Press NEXT
to proceed to the following parameter.
8) VALVE HYS
VALVE HYSTERESIS places a “dead band” around the
input signal(s) to limit response to minor signal variations.
This helps prevent wear and tear on the stepper motor
and feedback potentiometer. Selections in percentage
are: Off, 0.06, 0.13, 0.25, 0.38, 0.50, 0.75, 1.00 and
2.00 %. Factory setting is 0.13 %.
9
5.0 ENGINEERING MODE
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