Orion-system VCC-X Controller Manuel d'utilisateur Page 38

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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 VAC
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 2STATUS
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 1ASW
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
Dehumidi 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 con guration changes.
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