Hired-Hand Farm Hand Series: Vent Master 24 - Manual (Page 13)

Part No. 4801-5124 rev 10-03 Farm Hand Vent Master 24 11
vents failed to close for some reason. Setting the Low Pressure alarm
setpoint to “OFF” prevents the alarm from sounding.
P61 -- High Pressure Alarm
The High Pressure alarm will send a signal to your existing alarm system in
the same manner as the Low Pressure alarm, but only when pressure
exceeds the High Pressure Setpoint for greater than 45 seconds. (High
Negative Pressure.) This alarm warns if the vents did not open for some
reason. The Setting the alarm setpoint to 0.20 ”OFF” prevents the alarm
from sounding.
P63 -- Cycle Pressure Alarm
The cycle alarm is a very important alarm in that it will warn if your timer
fans failed to operate. The controller will look for a pressure surge which
would normally be caused when the timer fans turn on. If this pressure
surge is not sensed within the timer period you specify, the controller will
signal your alarm system, thus triggering an alarm. The values of P63 are
from 0.00 to 0.20. Setting the value of this limit to 0.00 “OFF” prevents the
alarm from sounding.
9.6 PC Compatible Network Parameters
This option requires Hired-Hand’s Farm Manager Software. The controller has three
functions which are used to set it up on the Hired-Hand PC compatible inter-controller
network (HHNet). These are:
P40 -- HHNet Address
HHNet allows you to connect up to 32 controllers on a single communications
port of your personal computer (PC). In order for the computer to recognize
the communications from the controllers, each controller must have a unique
address. For example, if you have two Vent Master 24s, and two Power
Vents you would need to set the first Vent Master 24 to be address 1, the
second Vent Master 24 to address 2, the first Power Vent to address 3, and the
second Power Vent to address 4. Valid settings are 1 - 32. (You do not have
to address the controllers in any particular order.)
P41 -- Version Number
This is not settable. It is the version of controller software.
P42 -- Controller Type
This is not settable. It is a unique number that allows the network software
(Farm Manager) to know the type controller.
P43 -- Stage Expansion
This Enables/Disables stages 17 through 24. Disabled = 0, Enabled = 1.
P44 -- Zone Brooder Expansion
This Enables/Disables the Zone Brooder expansion module.
9.7 Cool Timer Settings (ON/OFF Stages Only)
The following two settings allow the user to set the Runtime range for their cool timer stages.
These settings apply to the cool timers on the On/Off stages only. The range of these
parameter is from 5 to 100 in increments of 5
P70 -- Cool Timer Maximum Percentage
This sets the maximum Runtime percentage that a cool timer stage can operate.
P71 -- Cool Timer Minimum Percentage
This sets the minimum Runtime percentage that a cool timer stage can operate.