Technical data

Form: WHP-OE331-21-GPCPlusController-01A.doc Page 1 of 1
Description
The OE331-21 General Purpose Con-
troller Plus (GPC Plus) is used for con-
trolling equipment or processes that can-
not be controlled using HVAC controllers.
The Prism computer front end software is
used to interface with the GPC Plus con-
troller functions. The GPC Plus Controller
provides the flexibility to control, schedule
and/or monitor equipment such as unit
heaters, exhaust fans, motorized louvers,
etc.. The GPC Plus has (6) configurable
inputs which will accept signals from
thermistor temperature sensors, 4-20mA
or 0-5VDC transmitters or dry contact
closures. An additional modular input is
provided for connection of an OE271
static pressure sensor. The GPC Plus
has (5) relay outputs for on/off control and
(2) analog outputs. With the addition of
the OE352 2 Slot Expansion Base Board
and (1) OE357 4 Relay Expansion Board,
(4) additional relay outputs are available
providing for a maximum of (9) usable
relay outputs. The GPC Plus also has (5)
separate 2 event per day schedules, each
with its own optimal start functions built
in. In addition the GPC Plus provides
lead/lag start capabilities.
Mounting
The GPC Plus is provided with an integral backplate for mounting inside of a control enclosure. It is recom-
mended that the GPC Plus be mounted in the HVAC unit control enclosure, or in a control enclosure in the
building equipment room. An optional factory control enclosure for the GPC Plus is available.
Technical Data OE331-21-GPCPLUS
GPC Plus Controller
Power 24 Volt AC Weight 1.5 lb.
Power Consumption 8 VA Maximum Network Connection RS-485
Operating Temp
10°F to 149°F
Protocol HSI Open Protocol Token Passing
Operating Humidity 90% RH Non-Condensing Communications RS-485 - 9600 Baud
Inputs: Outputs:
Type III-10kohm sensors Total Relay Qty. On Board 5
4-20ma sensors
N.O. Binary Contact
Total Relay Qty. Available With
Optional Expansion Board
9
Types of Allowed
Inputs
N.C. Binary Contact Relay Power Rating (2 Amp @ 24 VAC)
Total Inputs Available 7 Analog Output Qty. 2
Static Pressure Inputs 1 (Modular ) Analog Output Signal 0-10 VDC
Configurable Inputs 6 Optimal Start Schedules (5) Total - (1) for Each Schedule
Schedules Available (5) 2 Event per day Lead Lag Scheduling (1) Output can be Configured
Three Year Warranty WattMaster reserves the right to change specifications without notice
OE331-21-GPC Plus
GPC Plus Controller
RLY1
D1
D2D3D4D5
CX3
RAM
EPROM
C3
C2
U6
PHILIPS
CX6
C1
CX2
U2
U3
PAL
CX4
U4
TUC-5R PLUS
YS101816 REV. 2
V1
V2
V3
V5
V4
TB2
4
NETWORK
TOKEN
16
32
8
SW1
ADD
2
1
A
DDRESS
V6
POWER
GND
24VAC
L1
D16
R6
C9
SC1
R11
U11
MC34064A
D13
C16
9936
VR2
7824CT
M
TB4
R27
C13
R10
VR1
C19
C18
NE5090NPB3192
0PS
U8
CX8 U9
X1
R7 D10
R13
D12
C7
CX10
U10
CX12
U12
U14
CX14
PJ3
PJ2
PJ1
EXPANSION
PRESSURE
SENSOR
T'STAT
C17
D15
R26
C20
R25
R24
R22
U15
CX13
U13
C15
R19
R15
C14
D18 D17
PU1
PU2
PU3
PU4
PU5
PU7
D6
D7
D8
D9
D11
D14
C12
C10
0-5
VDC
0-1
VDC
JP1
C11
X2
GND
TB3
INPUTS
GND
GND
+VDC
AIN1
AIN2
AIN3
AIN4
AIN5
AOUT1
AOUT2
AIN7
RN4
1
RN5
RS-485
CX5
U5
R
TB1
SHLD
T
COMM
COMM
RN3
1
RN1
U1
CX1
1
LD6
COMM
PWR
LD7
LED1
LED2
LD9
LD8
R1
U7
RV1
VREF AD J
R28
+VREF
5.11V
TEST POINT
EWDOG
D19
RN2
1
COM1-3
COM4-5
R5
R4
R3
R2
R1
RLY2RLY3RLY4RLY5
CX15
(1 MEG)
HH
P1
C21
6.2“
6.6”
7.3”
6.7”
1.1”
.20 Dia.
Typ. of 4