AAON RSMVQ2R User Manual

11
RSMVQ2R Technical Guide
INPUTS AND OUTPUTS
RSMVQ2R Inputs and Outputs
RSMVQ2R Inputs & Outputs
+5 VDC Power
This output is a 5 VDC output that supplies power to the Head
Pressure Transducer 1.
HP1 - Head Pressure Transducer 1
The Head Pressure Transducer is used to measure Head Pressure
at the discharge line. This Head Pressure is used to drive
Condenser Fan 1 to maintain a given Head Pressure Setpoint.
+5 VDC Power
This output is a 5 VDC output that supplies power to the Head
Pressure Transducer 2.
HP2 - Head Pressure Transducer 2
The Head Pressure Transducer is used to measure Head Pressure
at the discharge line. This Head Pressure is used to drive
Condenser Fan 2 to maintain a given Head Pressure Setpoint.
TEMP1 - Discharge Temperature Sensor 1
Input
This Sensor is the Discharge Line Temperature Sensor for Circuit 1.
It is the G010470 Thermistor 10K ohm strap-on pipe sensor.
It is strapped to the discharge line immediately after the VFD
compressor and is used as a safety against high compressor
temperatures. Units with Copeland VFDs have the Discharge
Line Temperature Sensor wired directly to the drive. Units with
Danfoss VFDs will have a Discharge Line Temperature Sensor
wired to TEMP 1 of the RSMVQ2R.
TEMP2 - Saturation Temperature Sensor 2
Input
This Sensor is the Suction Saturation Temperature Sensor for
Circuit 2. It is the G049490 Thermistor 10K strap-on pipe sensor.
It is strapped to the evaporator coil immediately after TXV and
is used to measure the suction saturation temperature of the
second circuit.
BIN1 - Compressor Status 1
When this wet contact input closes, a 24 volt signal to Binary
Input #1 indicates that Compressor 1 is running. Typically, the
source for this is a relay output from the VCCX2. If Binary Input 1
opens, a Compressor alarm will be generated. Compressor 1
relay needs to be congured on the VCCX2 as “A1 Compressor
Run Status.”
BIN2 - Compressor Status 2
When this wet contact input closes, a 24 volt signal to Binary
Input #2 indicates that Compressor 2 is running. Typically, the
source for this is a relay output from the auxiliary contact on
the compressor starter. If Binary Input 2 opens, Compressor 2
Enable relay and Compressor 2 High Speed Enable relay will
de-energize and a Compressor Alarm will be generated.
NOTE: The Binary Inputs require wet contacts (24 VAC
only) to recognize an active input. If you provide
dry contacts, the contact closure will not be
recognized.
AOUT1 - Condenser Fan 1 VFD Signal
This is a direct acting output signal that is used to modulate the
Condenser Fan 1 VFD (0-10 VDC signal) on an Air Cooled unit.
AOUT2 - Condenser Fan 2 VFD Signal
This is a direct acting output signal that is used to modulate the
Condenser Fan 2 VFD (0-10 VDC signal) on an Air Cooled unit.
EXV-1
The Electronic Expansion Valve 1 is the communications port
for DMQ EXV setpoints and status communications.
EXV-2
The Electronic Expansion Valve 2 is the communications port
for DMQ EXV setpoints and status communications.
RLY1 - Compressor 2 Enable
This relay turns on Compressor 2.
RLY2 - Compressor 2 High Speed Enable
This relay enables high speed on Compressor 2.
RLY3 - Condenser 1 Enable
This relay turns on the Condenser Fan 1.
RLY4 - Condenser 2 Enable
This relay turns on the Condenser Fan 2.

AAON RSMVQ2R Specifications

General

Brand	AAON
Model	RSMVQ2R
Category	Control Unit
Language	English