ProMinent Aegis-II, Руководство по сборке и эксплуатации, Страница: 67 / 102

Programming the Outputs
Page 67 of 102
B’down will set up the output for a blowdown. You
will need to identify the conductivity sensor in this
process. If the conductivity sensor is not currently
enabled, enable and configure it first. See
9.1.1
Enable an Analog or Digital Input,
and
10.5
Configuring a Blowdown Relay.
The
Feed
option prepares the output for a chemical
pump based on a sensor or water meter. See
10.6
Configuring a Feed Relay
Event-Other
is used to configure a timed event
relay. Timed events are frequently used for non-
oxidizing biocides.
See
10.7 Configuring an
Event-Other Relay
Each of these relay types have special control
functions available.
Blowdown has Captured Sample, (section
10.12.2 )
and Varying Cycles, (section
10.12.3 ).
Feed has
three types; Timed Cycling,
10.11.1
, Time
Modulation,
10.11.2
, and PID,
10.11.3
.
Event-Other has Prebleed/lockout. This is not shown
as a separate option. It is included with the
Configuring an Event-Other relay
in section
10.7
10.5 Configuring a Blowdown Relay
If you have not named the relay, See section 10.4
Naming the Output.
If you have not enabled the
relay, see section
10.2 Determine if a Relay is
Enabled.
Blowdown relays require the use of a conductivity
sensor. See section
9.1.1 Enable an Analog or Digital
Input.
Relays set for Blowdown mode have the following
options; Simple bleed based on conductivity set-
points, reverse conductivity/inhibitor feeding or the
special control method using our boiler Captured
Sample routine.
Simple bleed is used on cooling tower applications
and large boilers that incorporate continuous
blowdown.
Boilers are covered in more detail in section
10.11
Special Control Functions
Invert the control action to feed inhibitor based on
conductivity,
see section
10.10 Control Action.
To control blowdown on standard boilers, see
10.12.2 Captured Sample.
Simple blowdown:
1- Press
MENU
and scroll down to
Set
Blowdown Mode
. Press
OK
.
2- If more than one relay is set for this mode,
chose the one you are working on and press
OK
.
3- Press
OK
for
Sensor Control
4- Scroll down to your conductivity sensor, if
necessary, and press
OK
to select it.
5-
Enter the ON and OFF set-points. Use the
UP and DOWN arrows to edit the underlined
digit. Use the RIGHT and LEFT arrows to
move between the
digits. Press OTHER to
switch between the ON and OFF set-points.
6-
Press
OK
to save and exit.
Use the I/O Setup screen to set
interlocks
and
blocks
. See
10.8 and 10.9.
10.6 Configuring a Feed Relay
If you have not enabled the relay, see section
10.2
Determine if the Relay is Enabled
and/or
10.3
Enable and configure a Relay
. If you have not
named the relay, See section
10.4 Naming the
Output.
There are three relay modes;
Blowdown, Feed, and
Event/Other.
There are five types of
Feed Relay
choices;
x
Feed based on a water meter,
x
Feed based on any analog sensor including
any 4-20mA input,
x
Bleed and/or Feed,
x
Using a percent timer or
x
Using a sensor during an event.