Orion System GPC-XP Controller - Manual (Page 3)

GPC-XP Controller Technical Guide
Overview
3
Overview
The GPC-XP Controller ( OE338-23-GPC-XP) is used for controlling
equipment or processes that cannot be controlled using a standard
HVAC controller.
The GPC-XP provides the fl exibility to control, schedule and/or
monitor equipment such as unit heaters, exhaust fans, motorized
dampers, pumps, and other mechanical equipment. It can also be
used for simple boiler, chiller, or refrigeration applications as well
as to provide lead/lag start function.
The GPC-XP has an on-board CommLink that provides for stand-
alone programming and monitoring via a direct USB connection to
a computer running Prism 2 software. If used on a networked system
that has an external CommLink, this on-board CommLink would
not be used. Alternatively, the System Manager Touch Screen II for
GPC-XP (OE392-10-GPCXP) can be used to
view status, perform
force modes, and set schedules.
The GPC-XP has (8) confi gurable analog inputs which will ac-
cept signals from thermistor temperature sensors or from 4-20mA,
0-5VDC, or 0-10VDC transmitters. The inputs are set for the desired
scaling by means of a jumper bar. Custom formulas created by
available math functions and operators can be used in conjunction
with the analog inputs to create a calculated value to be used and
displayed for a specifi c analog input. An additional modular input
is available for WattMaster communicating sensors.
The GPC-XP has (8) wet contact binary inputs that can be confi g-
ured for either normally open or normally closed operation. Also
available are (8) relay outputs for on/off control and (4) analog
outputs (0-10VDC) for modulating control. Highest/lowest/average
(H/L/A) of the analog input values can be used in the GPC-XP logic
or broadcast to other controllers on the control system loop. These
H/L/A values are referred to in this technical guide as AVC (Analog
Value Comparison) values.
There are (8) separate two events per day schedules which can be
assigned to any input or output for operational control or for alarm
recognition based on time of day. These schedules can also be con-
fi gured to broadcast to other WattMaster controllers on the control
system loop.
NOTE: The internal USB communication port of the GPC-
XP Controller uses a specialized driver (USB Driver
CD-ROM included) that must be installed on your
Windows PC before communication to the device can
be established. To install the USB Driver, follow the
instructions in Appendix B on page 52.
GPC-XP Controller
NOTE: The GPC-XP Controller contains no user-serviceable
parts. Contact qualifi ed technical personnel if your
Controller is not operating correctly.
Features
The GPC-XP Controller provides the following:

8 confi gurable analog inputs

8 wet contact binary inputs confi gured for normally open
or normally closed operation

8 relay outputs for on/off control

4 analog outputs for proportional or PID control signals

E-BUS port for communicating sensors

8 separate 2 events per day schedules which can be
assigned to any input or output for operational control or
alarm recognition based on time of day

Schedules can be confi gured to broadcast to other
WattMaster HVAC equipment installed on the same
communications loop as the GPC-XP

Can be confi gured using a computer with Prism 2
software installed

The System Manager Touch Screen II for GPC-XP (sold
separately) can be used to view status, perform force
modes, and set schedules.

Can be operated Stand-Alone or connected to a
networked system

On-board CommLink for Stand-Alone programming
using a USB connection to a computer running Prism 2
software