Orion System VCM-X Modular E-BUS - Manual (Page 42)

ADDITIONAL APPLICATIONS
VCM-X Modular E-BUS Controller Technical Guide 42
AAON ® Tulsa Full Digital Module
The Full Digital Module ( OE370-23-FD-A) is a device that enables and
modulates up to four digital compressors on HVAC Units controlled by
the VCM-X Modular E-BUS Controller ( OE332-23E-VCMX-MOD-
A). The Full Digital Module will control the digital compressors to
satisfy the cooling, dehumidifi cation, and heat pump requirements of
the VCM-X Modular E-BUS Controller.
The Full Digital Module connects to the VCM-X Modular E-BUS
Controller. This allows the Full Digital Module to receive setpoints and
monitor the Supply Air Temperature from the VCM-X Modular E-BUS
Controller.
See Figure 37 below for wiring diagram.
Figure 37: AAON Tulsa’s Full Digital Module Wiring Diagram
AAON ® Tulsa Full Digital Module Overview and Wiring
The Full Digital Module requires a 24 VAC power connection with an
appropriate VA rating.
NOTE: The Compressor Relays on the Full Digital Module
are used rather than the relay outputs on the VCM-X Modular
E-BUS Controller.
NOTE: For complete information, including the sequence of
operation, refer to the Full Digital Module Technical Guide.
SHLD
SHLD
SHLD
OUT
OUT
OUT
COM
COM
COM
EXC
EXC
EXC
P4
P4
P4
BK
BK
BK
RD
RD
RD
WH
WH
WH
P2
P2
P2
P1
P1
P1
P3
P3
P3
P5
P5
P5
C1
C1
C1
C2
C2
C2
P6
P6
P6
SHLD
OUT
COM
EXC
P4
BK
RD
WH
P2
P1
P3
P5
AO1
SIG 1
SIG 2
SIG 3
SIG 4
AO2
GND
GND
GND
GND
C1
C2
P6
+5V
SIG 2
GND
OPTI
O N
S
ALARM
ANALOG
STAT
+5V
COMM
GND
SIG 4
GND
BIN 2
R1
R2
GND
RELAYS
ADDRESS
SIG 3
+5V
GND
BIN 1
COM
+5V
SIG 1
R3
R4
Rc
AO1
AO2
PWM1-
PWM1+
PWM2-
PWM2+
OE275-01 Suction
Pressure Transducer
OE275-01 Suction
Pressure Transducer
OE275-01 Suction
Pressure Transducer
OE275-01 Suction
Pressure Transducer
OE370-23-FD-A
Full Digital Module
Copeland Digital
Compressor Controller B1
Copeland Digital
Compressor Controller A2
Copeland Digital
Compressor Controller A1
Copeland Digital
Compressor Controller B2
This Dip
Switch Is Not
Used For This
Application
This Dip
Switch Is Not
Used For This
Application
PWR
Connect To VCM-X
Modular E-BUS Controller
(See for details.) Figure 33
Connect To Other
WattMaster-Approved
E-BUS Expansion Module(s)
HSSC Cable
24 VAC Transformer
3 VA Minimum
Line Voltage
24 V
A
C
GND
WARNING!!
Observe Polarity! All
boards must be wired
with GND-to-GND and
24 VAC-to-24 VAC.
Failure to observe
polarity could result in
damage to the boards.
HSSC Cable
NOTE:
NORMALLY OPEN AND
RATED FOR 24 VAC POWER
ALL RELAY OUTPUTS
ARE
COMPRESSOR A2 ENABLE
COMPRESSOR A1 ENABLE
R1
R4
R3
R2
COMPRESSOR B1 ENABLE
COMPRESSOR B2 ENABLE
ONLY. 1 AMP MAXIMUM LOAD.
HVAC UNIT CONNECTIONS