Poultry House Control
84
high alarm setting before entering emergency
pressure operation. In this event the controller
opens all known air sources to provide air. This
situation typically occurs when there is an
equipment failure preventing the usual air
sources from functioning. An emergency
pressure event latches the controller until the
operator performs an Alarm Reset in the
Management Menu. All devices continue to
operate at their temperature settings except for
those that allow air to enter the facility.
6. Curtain Position in Emergency Pressure
:
for many users the default 100% open is
satisfactory. However, in cold climates with
young birds, it may be necessary to prevent
total opening of curtains in the event of a
side vent failure producing high pressure.
The curtains (tunnel and natural curtains)
open this amount in an emergency pressure
event.
7. Minimum Tunnel Curtain Level (%)
: if
pressure during tunnel is selected, this is the
minimum that the tunnel curtain will open
on entering tunnel ventilation without regard
to pressure. High pressure will induce
further opening of the tunnel curtain. If no
pressure during tunnel is chosen, this
parameter sets the actual curtain position in
tunnel ventilation. It will not open further in
this case.
8. Minimum Tunnel Curtain Level to Start
Fans: during tunnel curtain movement, the
Platinum Plus turns off all exhaust and
tunnel fans until the curtain reaches this
position. This feature alleviates problems
with tunnel curtains sticking under static
pressure.
9. Vent Motor Slow/Fast
: enter 1 for fast if
your side inlets fully open or close in less
than 60 seconds. If they take longer than
this, select the slow option.
10. Time to Produce Pressure (seconds)
. Enter
the length of time to reach target pressure
when minimum ventilation fans cycle on.
The default of 10 seconds is satisfactory in
most cases, but some buildings take longer
to reach target pressure. If the automatic
inlet advance fails to function, try increasing
this parameter to 20 seconds.
Pressure, Precision Mode
Precision mode pressure settings provide a ramping
feature for side or minimum ventilation. If you have
outside sensors selected to determine incoming air
temperature, the Platinum Plus will use the Pressure
at Low Temperature setting below the Incoming Air
Low Temperature setting in the Help | Set
parameters, and the Pressure at High Temperature
setting above the Incoming Air High Temperature
setting. Between the two temperatures, it
interpolates the target pressure setting.
Minimum Vent PressureSettings:
2. Pressure At Low Temp
: enter the low
temperature target pressure (usually a higher
pressure).
3. Pressure At High Temp
: enter the high
temperature pressure (usually a lower pressure).
4. Low Alarm
: enter the low alarm pressure. The
Platinum Plus accounts for low pressure periods
due to fans turning off during minimum
ventilation fans cycling on and off. The global
alarm delay (see Management, Alarm Setting)
is the length of time the controller waits to
signal a low pressure alarm.
5. High Alarm
: enter the high alarm pressure. If
the controller senses a pressure over the high
pressure setting for longer than the ‘Emergency
Pressure Delay’ under Help Set, it switches to
emergency pressure ventilation mode.
6. Band
: this is the ‘Happy Zone’ for minimum
ventilation static pressure. It centers
symmetrically around the target pressure, and
sets the total width of the acceptable pressure
zone in minimum ventilation.
Tunnel Pressure Settings
1. Target Pressure
: this is the pressure setting for
use in tunnel, if enabled in Help | Set
parameters.
2. Low Alarm
: enter the low alarm pressure. The
Platinum Plus accounts for low pressure periods
due to fans turning off during minimum
ventilation fans cycling on and off. The global
alarm delay (see Management, Alarm Setting)
is the length of time the controller waits to
signal a low pressure alarm.
3. High Alarm: enter the high alarm pressure. If
the controller senses a pressure over the high
pressure setting for longer than the ‘Emergency
Pressure Delay’ under Help Set, it switches to
emergency pressure ventilation mode
4. Band
: this is the ‘Happy Zone’ for minimum
ventilation static pressure. It centers
symmetrically around the target pressure, and
sets the total width of the acceptable pressure
zone in minimum ventilation.
Help | Set Parameters
a. Wind Gust Delay Time (sec)
: length of time
to delay before making pressure adjustments
to unexpected pressure changes. Note that the
Platinum Plus uses zero delay when its
actions result in pressure changes.
b. Pressure During Tunnel (N-0/Y-1)
: select
whether to use the tunnel pressure settings, or
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