Orion System VCC-X Controller - Manual (Page 38)

REFRIGERANT SYSTEM MODULE WIRING
VCC-X Controller Technical Guide 38
Refrigerant System Module for VFD
Compressors Wiring
The OE370-26-RSMV Refrigerant System Module for VFD
Compressors (RSMV) monitors and controls one refrigeration circuit
of the HVAC unit. The module is designed for R410-A refrigerant.
The RSMV is connected to the VCC-X Controller (Orion Part No.
OE338-26B-VCCX; AAON Part No. V42430). Up to 4 RSMV’s
can be connected, depending on the size of the system. There are
2 E-BUS Expansion Ports which allow the use of communicating
sensors and the E-BUS Modules.
The RSMV provides 4 analog inputs, 3 binary inputs, 3 relays, and
4 analog outputs. See Figure 23 below for inputs wiring and Figure
24, page 39 for outputs wiring.
M
ENTER
UP
DOWN
ALARM
MENU
OE370-26-RSMV
REFRIGERANT
SYSTEM MODULE V AAON No.: V42440
E-BUS E-BUS
+24
V
AC
GND
RELAY CONTACT
RATING IS 1 AMP
MAX @ 24 VAC
CONDENSER
COMP 1
COMP 2
EXPANSION
VALVE 1
SUCTION
PRESSURE
SENSOR
HEAD
PRESSURE
SENSOR
COIL TEMP
SENSORS
BINARY
INPUTS
EXPANSION
VALVE 2
ANALOG
OUTPUTS
BLACK
+5 V
+5 V
COIL TEMP 1
COMP STATUS 1
BLACK
MOD COMP SIG
CONDENSER FAN SIG
WHITE
SP
HP
COIL TEMP 2
COMP 2 STATUS
GND
GND
TEMP 3
OUTSIDE COIL TEMP. SW
BIN 4
GND
GND
WHITE
RED
RED
GND
GREEN
GREEN
REVERSING VALVE
COMMON
RELAY OUTPUT
TERMINALS
www.aaon.com
WattMaster Overlay #000065 Rev 1A SW
SP
GND
+V
BK
RD
WH
HP
GND
+V
BK
RD
WH
SUCTION PRESSURE
SENSOR
HEAD PRESSURE
SENSOR
(BY OTHERS)
REFRIGERANT SYSTEM MODULE
FOR VFD COMPRESSORS
(RSMV)
COIL
TEMP. 2 SENSOR
(SUCTION LINE)
TEMP1
GND
TEMP2
COMPRESSOR STATUS 1
COMPRESSOR STATUS 2
BIN1
BIN2
24VAC
GND
Line Voltage
Size Transformer For
Correct Total Load.
RSMV = 18 VA
GND
COIL (SUCTION LINE)
TEMP. 1 SENSOR
RSMV Inputs & Outputs Wiring
Figure 23: RSMV Inputs Wiring
The RSMV Module provides the following:
• Controls the Compressors to satisfy the Supply Air
Temperature Setpoint (Supply Air Temperature sent
by VCC-X Controller) during Cooling Mode. During
Dehumidifi cation Mode, it controls the Compressors
to the Suction (Saturation) Temperature Setpoint
• Modulates the Condenser Fan to maintain the Head
Pressure Setpoint
• Modulates the Expansion Valves to maintain the
Superheat Setpoint
• Provides alarms and safeties for the compressor and
condenser operation.
• Contains a 2 x 8 LCD character display and 4
buttons that allow for status display, setpoint changes,
and confi guration changes.