FORM 160.54-O1
33
JOHNSON CONTROLS
2
PROGRAMMABLE
Head Pressure Setpoint
(15.0 to 60 PSID; default 23.0 PSID)Sets the pressure
differential to which the Control Valve will control the
Head Pressure.
Control Valve Output Settings - Type
(0-10v or 4-20mA; default 0-10v) Sets the output signal
to the Control Valve to be in the form of either 0-10VDC
or 4-20mA.
Control Valve Output Settings - PID Output
(Direct or Reverse) Allows the output signal to the
Control Valve to be set to DIRECT or REVERSE act-
ing. When set to DIRECT, the voltage or current signal
to the Control Valve is at minimum for a 0% command
and at maximum for a 100% command. When set to
REVERSE, the voltage or current signal to the Control
Valve is at maximum for a 0% command and at mini-
mum for a 100% command.
Control Valve Output Settings - Set
(0.0% to 100%; default 0.0%) Allows the Control Valve
to be manually set to a pre-determined position between
0.0% and 100%.
Control Valve Output Settings - Auto
Places the Control Valve in automatic control.
Change Setpoints
Use to enter the Head Pressure Control PID variables
below. Pressing this key places a green box around
the rst changeable setpoint. Use the up/dn, left/right
arrows to place the selection box aroud thwe desired
setpoint. Wityht the setpoint selected, press the ENTER
(checkmark) key. A dialog box appears with the range
of settings. Using the numeric keys, enter desired value.
Then, press the ENTER (checkmark) key.
Head Pressure Control - P
Sets the Proportional Gain of the Head Pressure Control
(0.00 to 5.00; default 2.00). Use the Change Setpoints
key as described above to select/enter this setpoint.
Head Pressure Control – I
Sets the Integral Gain of the Head Pressure Control (0.00
to 5.00; default 2.00). Use the Change Setpoints key as
described above to select/enter this setpoint.
Head Pressure Control – D
Sets the Derivative Gain of the Head Pressure Control
(0.00 to 5.00; default 0.00). Use the Change Setpoints
key as described above to select/enter this setpoint.
NAVIGATION
Home
Causes an instant return to the Home Screen
Condenser
Returns to the Condenser Screen
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