Orion Full Digital Module User Manual
Tulsa
Factory Packaged Controls
Full Digital Module
Technical Guide
Table of Contents
OVERVIEW ........................................................................................................................................................ 3
Overview ......................................................................................................................................................................................3
INSTALLATION AND WIRING ........................................................................................................................... 4
Environmental Requirements .......................................................................................................................................................4
Mounting.......................................................................................................................................................................................4
Power Supply and Communications ............................................................................................................................................4
Important Wiring Considerations ..................................................................................................................................................5
VCM-X Modular Controller to Full Digital Module Wiring .............................................................................................................6
VCM-X Modular E-BUS Controller to Full Digital Module Wiring .................................................................................................8
START-UP AND COMMISSIONING .................................................................................................................. 10
General.......................................................................................................................................................................................10
Unit Confi gurations .....................................................................................................................................................................10
MODES OF OPERATION ................................................................................................................................. 11
Digital Stage 1 / Digital Stage 2..................................................................................................................................................11
Off Mode .....................................................................................................................................................................................11
Cooling Mode .............................................................................................................................................................................11
Heat Pump Heating Mode (Air to Air) .........................................................................................................................................11
Dehumidifi cation Mode ...............................................................................................................................................................11
Defrost Mode ..............................................................................................................................................................................11
Staging Delays ...........................................................................................................................................................................11
TROUBLESHOOTING ...................................................................................................................................... 12
Using LEDs to Verify Operation..................................................................................................................................................12
LED Diagnostics .........................................................................................................................................................................13
Suction Pressure Transducer Testing .........................................................................................................................................14
PART NUMBER CROSS REFERENCE TABLE
PART DESCRIPTION ORION AAON
VCM-X Full Digital Module OE370-23-FDM-A R74870
VCM-X Modular Controller OE332-23-VCMX-MOD-A R90800
VCM-X Modular E-BUS Controller OE332-23E-VCMX-MOD-A V07150
VCM-X E-BUS Distribution Module OE365-23-EBD-A R82930
VCM-X Expansion Module OE333-23-EM R69190
VCM-X 12 Relay Expansion Module OE358-23-12R R69180
VCM-X One Condenser Head Pressure Module OE370-23-HP1C R74860
VCM-X Two Condenser Head Pressure Module OE370-23-HP2C R90230
www.aaon.com
WattMaster Controls Inc.
8500 NW River Park Drive · Parkville , MO 64152
Toll Free Phone: 866-918-1100
PH: (816) 505-1100 · FAX: (816) 505-1101 · E-mail: mail@wattmaster.com
Visit our web site at www.orioncontrols.com
WattMaster Form : AA-FDM-TGD-01F
Copyright December 2013 WattMaster Controls, Inc.
AAON Manual Part Number: R84500
®
AAON
is a registered trademark of AAON, Inc., Tulsa, OK.
Neither WattMaster Controls, Inc. nor AAON
assumes any responsibility for errors or omissions in this document.
This document is subject to change without notice.
®
Full Digital Module
Module Overview
Overview
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 Controller (OE332-23-VCMX-MOD-A) or
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 series controller.
If the Full Digital Module is in the Cooling Mode or Heat Pump Heating Mode, it will modulate the compressors to maintain the appropriate
Supply Air Temperature Setpoint. If the module is in the Dehumidifi ca-
tion Mode, it will modulate compressors to maintain the Coil Suction
Temperature Setpoint. If the module is in the Heat Pump Heating Mode,
the module can also monitor a signal for a Defrost Cycle from the VCMX Modular series controller if a One Condenser Head Pressure Module
(OE370-23-HP1C) is also installed.
The Full Digital Module is connected to the VCM-X Modular Controller using the E-BUS Distribution Module (OE365-23-EBD). The Full
Digital Module can also be directly connected to the VCM-X Modular
E-BUS Controller. Either connection allows the Full Digital Module
to receive setpoints and monitor the Supply Air Temperature from the
VCM-X Modular series controller. The Full Digital Module requires a
24 VAC power connection with an appropriate VA rating.
NOTE: The Full Digital Module contains no user-serviceable
parts. Contact qualified technical personnel if your
module is not operating correctly.
Figure 1: Full Digital Module
Technical Guide 3
Full Digital Module
Installation and Wiring
Environmental Requirements
The Full Digital Module needs to be installed in an environment which
can maintain a temperature range between -30°F and 150°F and not
exceed 90% RH levels (Non-Condensing).
Mounting
The Full Digital Module is housed in a plastic enclosure. It is designed
to be mounted by using the 3 mounting holes in the enclosure base. It is
important to mount the module in a location that is free from extreme high
or low temperatures, moisture, dust, and dirt. Be careful not to damage
the electronic components when mounting the module.
See Figure 2 for Module dimensions (dimensions are in inches).
Power Supply and Communications
The Full Digital Module is connected to the E-BUS Distribution Module with a modular HSSC cable to provide communications from the
VCM-X Modular Controller. The E-BUS Distribution Module uses
WattMaster Control’s standard I2C modular cable to connect with the
VCM-X Modular Controller, VCM-X Expansion Module, or 12-Relay
Expansion Module.
The Full Digital Module can also be directly connected to the VCM-X
Modular E-BUS Controller, bypassing the use of the E-BUS Distribution Module.
The Full Digital Module requires a 24 VAC power supply with an appropriate VA rating.
WARNING: Observe polarity! All boards must be wired
GND-to-GND and 24 VAC-to-VAC. Failure to
observe polarity could result in damage to the
boards.
Figure 2: Full Digital Module Dimensions
4
Technical Guide
Full Digital Module
Installation and Wiring
Important Wiring Considerations
Please carefully read and apply the following information when wiring
the Full Digital Module:
1. The 1 to 5 VDC signals for the Copeland Compressor
Speed need to use 18-gauge shielded twisted pair cable, and
the Drain wire must be the GND signal.
2. All 24 VAC wiring must be connected so that all ground
wires remain common. Failure to follow this procedure can
result in damage to the module and connected devices.
3. All wiring is to be in accordance with local and
national electrical codes and specifi cations.
SHLD
P5
P6
C1
C2
Copeland Digital
Compressor Controller A1
P5
P6
C1
C2
Copeland Digital
Compressor Controller A2
P5
P6
C1
C2
Copeland Digital
Compressor Controller B1
P5
P6
C1
C2
Copeland Digital
Compressor Controller B2
P4
EXC
OUT
COM
SHLD
EXC
OUT
COM
SHLD
EXC
OUT
COM
SHLD
EXC
OUT
COM
P4
P3
P2
P4
P3
P2
P4
P3
P2
RD
P3
WH
P2
BK
P1
RD
WH
BK
P1
RD
WH
BK
P1
RD
WH
BK
P1
Connect To E-BUS
Distribution Module or
VCM-X Modular E-BUS Controller
OE275-01 Suction
Pressure Transducer
OE275-01 Suction
Pressure Transducer
OE275-01 Suction
Pressure Transducer
OE275-01 Suction
Pressure Transducer
SIG 1
GND
SIG 2
GND
SIG 3
GND
SIG 4
GND
This Dip
Switch Is Not
Used For This
Application
+5V
SIG 1
GND
+5V
SIG 2
GND
+5V
SIG 3
GND
+5V
SIG 4
GND
BIN 1
BIN 2
COM
ADDRESS
PWR
HSSC Cable
4. Be sure that all wiring connections are properly inserted
and tightened into the terminal blocks. Do not allow wire
strands to stick out and touch adjoining terminals. This
could potentially cause a short circuit.
5. Be sure all modular wiring harness connectors are seated
fi rmly in their respective modular connectors on the circuit
board.
NOTE: The Compressor Relays on the Full Digital Module
are used rather than the relay outputs on the VCM-X
Modular series controller.
WARNING: Be sure all controllers and modules are
powered down before connecting or
disconnecting HSSC cables.
NOTE:
OE370-23-FD-A
Full Digital Module
GND
R1
R1
R2
R2
R3
R3
R4
R4
Rc
RELAYS
ANALOG
AO1
AO2
OPTIONS
ALARM
STAT
COMM
Switch Is Not
Used For This
Application
This Dip
PWM1-
PWM1+
PWM2-
PWM2+
AO1
AO2
GND
24 VAC
ALL RELAY OUTPUTS
NORMALLY OPENAND
ARE
RATED FOR 24 VAC POWER
ONLY. 1 AMP MAXIMUM LOAD.
COMPRESSOR A1 ENABLE
COMPRESSOR A2 ENABLE
COMPRESSOR B1 ENABLE
COMPRESSOR B2 ENABLE
HVAC UNIT CONNECTIONS
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.
Line Voltage
Figure 3: Full Digital E-BUS Connection Wiring
Technical Guide
HSSC Cable
24 VAC Transformer
3 VA Minimum
Connect To Other
WattMaster-Approved
E-BUS Expansion Module(s)
5
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