McQuay AWS User Manual

KOMAC00607-09EN 15
Extension I/O Compressor #1 to #3
Analog Inputs
# Description Signal Source Expected Range
X1 Discharge Temperature NTC Thermister (10K@25°C) -50°C – 120°C
X2 Evaporator Pressure Ratiometric (0,5-4,5 Vdc) 0 to 5 Vdc
X3 Oil Pressure Ratiometric (0,5-4,5 Vdc) 0 to 5 Vdc
X4 Condenser Pressure Ratiometric (0,5-4,5 Vdc) 0 to 5 Vdc
X7 Motor Protection PTC Thermistor n/a
Analog Outputs
# Description Output Signal Range
Not Needed
Digital Inputs
# Description Signal Off Signal On
X6 Starter Fault Fault No fault
DI1 High Pressure Switch Fault No fault
Digital Outputs
U.S. Configuration
# Description Output Off Output On
DO1 Start Compressor Compressor Off Compressor On
DO2 Economizer Solenoid Closed Solenoid Open
DO3 Non-modulating Slide Load Solenoid Closed Solenoid Open
DO4 Liquid Injection Solenoid Closed Solenoid Open
DO5 Modulating Slide Load Solenoid Closed Solenoid Open
DO6 Modulating Slide Unload Solenoid Closed Solenoid Open
X5 Spare
X8 Spare
I/O EXV Circuit #1 to #3
Analog Inputs
# Description Signal Source Expected Range
X2 Suction Temperature NTC Thermister 10K@25°C) -50°C – 120°C
Analog Outputs
# Description Output Signal Range
Not Needed
Digital Inputs
# Description Signal Off Signal On
DI1 Low Pressure switch (optional) Fault No fault (optional)
Digital Outputs
# Description Output Off Output On
DO1 Liquid Line (optional) Solenoid Closed
Solenoid Open (optional)
Stepper Motor Output
# Description
M1+
M1-
EXV Stepper Coil 1
M2+
M2-
EXV Stepper Coil 2

McQuay AWS Specifications

General

Brand	McQuay
Model	AWS
Category	Chiller
Language	English