Orion System GPC-XP Controller - Manual (Page 31)

GPC-XP Controller Technical Guide
Section 7: Confi guring Analog Outputs
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Control Source
The Control Source Options are as follows (Figure 57 below):
● Analog Inputs #1 - 8
● Outdoor Air
● OA Wetbulb
● OA Dewpoint
● AVC Highest Reading
● AVC Lowest Reading
● AVC Average Reading
● Analog Outputs #1-4 (not shown in
Figure 57)
Control Source, Control Setpoints, Setpoint Reset Source
Figure 57: Control Source
Control Setpoints & Reset Limits
For most applications, only the Max Setpoint and the Deadband will
be used. See Figure 58 below. Unless a Setpoint Reset Source is
selected, the other values in this section will be grayed-out and not
used. In this situation, the Max Setpoint will be the setpoint you are
trying to maintain. The Deadband is the range above and below the
Setpoint in which no control signal change is made.
Figure 58: Control Setpoints & Reset Limits
Setpoint Reset Source
You can confi gure a Setpoint Reset Source that will allow reset of
the Control Setpoints (Figure 59 below). Once a Reset Source is
selected, you will be able to confi gure both a “Max Setpoint” and a
“Min Setpoint” as well as a Max Reset value and a Min Reset value
(Figure 58). As the Reset Source value varies between the Max and
Min Reset values, the Control Setpoint will be proportionally reset
between the Max and Min Control Setpoints. At the Max Reset
value, the Control Source will be at the Max Setpoint, regardless if
it is an inverse relationship.
Figure 59: Setpoint Reset Source
Disabled Mode Offsets
The Disabled Mode Offsets (Figure 60 below) can be used if you
are using an Enabling Relay, an Enabling Binary Input, or a Control-
ling Schedule. Anytime this output is not enabled by the Enabling
Relay or the Enabling Binary, or is in the Unoccupied Mode (per the
Schedule), these offsets will be applied to the Max/Min Setpoints
to initiate the control operation of this analog output. These would
then act as “Night Setback” type offsets. If these offset values are
‘0’, there will be no Disabled Mode operation.
Figure 60: Disabled Mode Offsets