3
Table 1 — Control Inputs and Outputs
LEGEND
DESCRIPTION
ABBREV.
TYPE
I/O NO.
JUMPER SETTINGS
INPUTS
MAIN CONTROLLER (PCB1)
Aux. Pwr Out: 24V
Refrigerant Pressure (Cir. no. 1)
PRES
0-5V; Internally Powered
UI-01
IN01: 0-10V
Duct Static Pressure
DSP
4-20mA; Internally Powered
UI-02
IN02: 0-20mA
Duct High Static Limit Switch
DHS
Switch Closure
UI-03
IN03: RTD/Dry/Therm
Supply Air Temperature
SAT
Analog; 10K-2 Sensor
UI-04
IN04: RTD/Dry/Therm
unassigned
–
–
UI-05
IN05: RTD/Dry/Therm
Space Zone Sensor (analog)
SPT
Analog; 10K-2 Sensor
UI-06
IN06: RTD/Dry/Therm
Indoor Air Quality
IAQ
Analog; 0-10V,Ext Powered
UI-07
IN07: 0-10V
Indoor Relative Humidity
IRH
Analog; 0-10V,Ext Powered
UI-08
IN08: 0-10V
Building Static Pressure
BSP
Analog; 0-10V,Ext Powered
UI-09
IN09: 0-10V
External Reset
RESET
Analog; 0-10V,Ext Powered
UI-10
IN10: 0-10V
Remote Occupancy
RMTOCC
Switch Closure
UI-11
IN11: RTD/Dry/Therm
Fire Alarm/Shutdown
FSD
Switch Closure
UI-12
IN12: RTD/Dry/Therm
I/O BOARD (PCB2)
Compressor 1 Status
CR1
Switch Closure
IN-01
Compressor 2 Status
CR2
Switch Closure
IN-02
Compressor 3 Status
CR3
Switch Closure
IN-03
Compressor 4 Status
CR4
Switch Closure
IN-04
Condenser Water Flow Switch
CDWF
Switch Closure
IN-05
Phase/Rotation Monitor
PHASE
Switch Closure
IN-06
Filter Status Switch (Dirty Filter Detect)
FLTS
Switch Closure
IN-07
Differential Enthalpy
ENTH
Switch Closure
IN-08
unassigned
–
–
IN-09
IW9:Therm/Dry
Entering Water Temperature
EWT
Analog; 5K Sensor
IN-10
W8:Therm/Dry
Water Econ Freezestat Sensor or Switch
FREEZE
Analog; 10K-2 Sensor or Switch Closure IN-11
IW7:Therm/Dry (configurable)
Mixed/Return Air Temperature
MA_RA
Analog; 10K-2 Sensor
IN-12
IW6:Therm/Dry
Tower Sump Temperature
TWRTEMP
Analog; 10K-2 Sensor
IN-13
IW5:Therm/Dry
Leaving Water Temperature
LWT
Analog; 10K-2 Sensor
IN-14
IW4:Therm/Dry
Outdoor Air Temperature
OAT
Analog; 10K-2 Sensor
IN-15
IW2:Therm/Dry
unassigned
–
–
IN-16
IW1:Therm/Dry
BINARY OUTPUTS
MAIN CONTROLLER (PCB1)
Compressor 1
Relay; Form C
BO-01
Compressor 1
Relay; Form C
BO-02
Compressor 1
Relay; Form C
BO-03
Compressor 1
Relay; Form C
BO-04
VFD Bypass Start/Stop or CV Fan Start/Stop
BPS_S
Relay; Form C
BO-05
Field Alarm Connection
Alarm
Relay; Form C
BO-06
Field Use
I/O Board (PCB2)
Heat Interlock Relay
HIR
Relay; Form A (N.O.)
BO-01
VAV Terminal Control
TRMCT
Relay; Form A (N.O.)
BO-02
Ventilation Output
VENTR
Relay; Form A (N.O.)
BO-03
VAV Terminal Open
TRMOP
Relay; Form A (N.O.)
BO-04
Water Pump Request
PUMP
Relay; Form A (N.O.)
BO-05
Tower Request
TOWER
Relay; Form A (N.O.)
BO-06
External Humidify/Dehumidify
HUMID_OUT
Relay; Form A (N.O.)
BO-07
unassigned
–
Relay; Form A (N.O.)
BO-08
ANALOG OUTPUTS
MAIN CONTROLLER (PCB1)
VFD Speed Control
VFD
0-10V
AO-1
Modulating Valve Econ./Head Pressure
Control
MVLV
0-10V
AO-2
2-Position/Reverse Operation
Valve or Air Economizer
ECONO
0-10V
AO-3
Heating Output
HEAT
0-10V
AO-4
Modulating Exhaust Fan
EXH
0-10V
AO-5
unassigned
–
0-10V
AO-6
AO
—
Analog Output
BO
—
Binary Output
CV
—
Constant Volume
I/O
—
Input/Output
N.O.
—
Normally Open
RTD
—
Resistance Temperature Detector
VAV
—
Variable Air Volume
VFD
—
Variable Frequency Drive
