8
RSMVQ Technical Guide
WIRING
RSMVQ Inputs Wiring
RSMVQ Wiring
The RSMVQ uses an E-BUS cable to connect to the VCCX2
Controller. Only one RSMVQ can be connected. There are two
E-BUS expansion ports which allow connection to the VCCX2
Controller, communicating sensors, and other E-BUS modules.
The RSMVQ uses four analog inputs, two binary inputs, four
relays, and two analog outputs. See
Figure 2, this page,
for inputs
wiring and
Figure 3, page 9,
for outputs wiring.
Head Pressure Control
The RSMVQ can monitor the Head Pressure Transducers and
control condenser fans to maintain a Head Pressure Setpoint. The
condenser fans will be controlled with a 0-10 VDC output signal.
Condenser and Compressor Configuration
Options
Please see
pages 31-34
for condenser and compressor
configuration details.
WARNING:
Observe polarity! All boards must be wired
with GND-to-GND and 24 VAC-to-24
VAC. Failure to observe polarity will result
in damage to one or more of the boards.
Expansion modules must be wired in such
a way that the expansion modules and the
controller are always powered together. Loss
of power to the expansion module will cause
the controller to become inoperative until
power is restored to the expansion module.
Figure 2: RSMVQ Inputs Wiring
18-30
VAC
GND
Line
Voltage
Size transformer for
correct total load.
RSMVQ = 18 VA
BK
RD
WH
COMP STAT 1
COMP STAT 2
COM
+
Condenser Fan 2
COM
+
Condenser Fan 1
BK
RD
WH
Head Pressure
Transducer
(by others)
Head Pressure
Transducer
(by others)
Discharge Temp
Sensor 1
Saturation Temp
Sensor 2
AAON P/N: ASM02293
+24
VA
C
GND
REL
AY
CONT
ACT
RA
TING IS 1
AMP
MAX @ 24
VA
C
CONDENSER 1
COMP 2 ENABLE
COMP 2 HI SPEED
ANALOG OUTPUTS
COMMON
RELAY OUTPUTS
LABEL P/N:
G079120
COND FAN 1
COND FAN 2
GND
24 VAC POWER ONLY
WARNING! POLARITY
MUST BE OBSERVED
OR THE CONTROLLER
WILL BE DAMAGED
CONDENSER 2
+5 V
DISCHARGE TEMP 1
COMP STAT 1
H 1
P
SATURATION TEMP 2
COMP STAT 2
GND
NOT USED
GND
NOT USED
GND
BINARY INPUTS
MODBUS
RSMVQ
www.aaon.com
HEAD
PRESSURE
SENSORS
DUAL
E-BUS
EXP VALVE 1
+5 V
H 2
P
GND
NOT USED
NOT USED
GND
NOT USED
EXP VALVE 2
R+
T-
SH
SHD
T-
R+
SHD
T-
R+
EXP VALVE 3
NOT
INSTALLED
EXP VALVE 4
NOT
INSTALLED
EACH EXP VALVE IS INDIVIDUALLY
ELECTRICALLY ISOLATED
NOT USED
ALARM
UP
DOWN
ENTER
MENU
Summary of Contents for ASM02293
Page 1: ...RSMVQ Technical Guide ...
