Orion System SA E-BUS Controller - Manual (Page 22)

Zone
Zone
Installation & Wiring
SA E-BUS Controller Technical Guide 22
Figure 18: OE275-01 – Suction Pressure Transducer Wiring
Suction Pressure Transducer
The OE275-01 Suction Pressure Transducer always wires directly to
the Digital Scroll Compressor Controller. See Figure 18 below for
wiring details.
The Suction Pressure Transducer is used to measure suction pressure
at the HVAC unit’s DX evaporator coil suction line. This suction line
pressure is converted to saturated refrigerant temperature by the SA E-
BUS Controller. This temperature is used by the SA E-BUS Controller
to accurately control the compressors and reheat cycle components to
provide optimum performance from the system during Dehumidifi ca-
tion operation.
Suction Pressure Transducer Wiring
Note:
1.) Suction Pressure Transducer(s) Are Only Required
For Installations With The Dehumidification Option
Installed.
2.) Modulating Cooling Output Voltage Must Be
Configured For 1.5 - 5 VDC Operation When You Are
Setting Up The SA Controller Operating Parameters
For A Copeland Digital Compressor.
Caution:
1.) The Schraeder Port Used For
Installation Of The Suction Pressure
Transducer Should Be Located In A
Vertical Portion Of The Suction Line To
Prevent Refrigerant Oil From
Accumulating In The Sensor.
Modular Cable
Connect To SA E-BUS
Controller
Modular Cable
Connect To Expansion
Module (When Used)
24 VAC
GND
10 VA Minimum Power Required
For SA Expansion Module
WARNING!!
Observe Polarity! All boards must be wired with GND-to-GND and 24VAC-to-24VAC.
Failure to observe polarity will result in damage to one or more of the boards. Expansion
Module must be wired in such a way that the expansion module 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.
SA Expansion
Module
Splice Wire As Required To Reach
From Transducer Location To
Expansion Module Location
BK
BK
RD
RD
WH
WH
OE275-01
Suction Pressure Transducer
OE275-01
Suction Pressure Transducer
Wiring For Single
Cabinet Unit
Additional Wiring
For Dual Cabinet
Units
RELAY CONTACT
RATING IS 1 AMP
MAX @ 24 VAC
RELAY 2
RELAY 1
RELAY 3
RELAY 4
RELAY
COMMON
I2C
EXPANSION
I2C
EXPANSION
AO1 = BUILDING PRESSURE CONTROL VFD OR
DAMPER ACTUATOR (0-10 OR 2-10 VDC)
= MODULATING HEATING SIGNAL
(0-10 VDC OR 2-10 VDC)
= MODULATING COOLING/DIGITAL SCROLL
SIGNAL (0-10 VDC, 2-10 VDC OR 1.5-5 VDC)
= RETURN AIR DAMPER ACTUATOR
(0-10 VDC)
= RETURN AIR BYPASS DAMPER ACTUATOR
(0-10 VDC)
= GROUND FOR ANALOG OUTPUTS
= GROUND FOR ANALOG OUTPUTS
AO2
AO3
AO4
AO5
GND
GND
BI1 = HOOD ON - N.O. INPUT
BI2
BI3
BI4
BI5
BI6
BI7
BI8
= DIRTY FILTER - N.O. INPUT
= PROOF OF FLOW - N.O. INPUT
= REMOTE FORCED OCCUPIED - N.O. INPUT
= REMOTE FORCED HEATING - N.O. INPUT
= REMOTE FORCED COOLING - N.O. INPUT
= SMOKE DETECTOR - N.C. INPUT
= REMOTE DEHUMIDIFICATION - N.O. INPUT
ANALOG INPUT
JUMPER SETTINGS
MUST BE SET AS
SHOWN FOR
PROPER
OPERATION
24 VAC POWER ONLY WARNING! POLARITY MUST BE
OBSERVED OR THE BOARD
WILL BE DAMAGED
www.orioncontrols.com
AI1
AI2
AI3
AI4
THERM
THERM
THERM
THERM
4-20mA
4-20mA
4-20mA
4-20mA
0-10V
0-10V
0-10V
0-10V
0-5V
0-5V
0-5V
0-5V
ANALOG INPUT
JUMPER
SETTINGS
RELAY 1 = RELAY 3 =
RELAY 2 = RELAY 4 =
IT IS SUGGESTED
THAT YOU WRITE THE
DESCRIPTION OF
THE RELAY OUTPUTS
YOU ARE USING IN
THE BOXES
PROVIDED ABOVE
WITH A PERMANENT
MARKER (SHARPIE®)
WattMaster Label
#LB102034-01
NOTE:
ALL BINARY INPUTS MUST BE 24 VAC ONLY.
AI1 = OUTDOOR AIR RH SENSOR (0-5 VDC)
AI2
AI3
AI4
GND
GND
= INDOOR AIR RH SENSOR (0-5 VDC)
= CO2 (0-10 VDC)
= BUILDING STATIC PRESSURE (0-5 VDC)
= GROUND FOR ANALOG INPUTS
= GROUND FOR ANALOG INPUTS
+V
SIG
GND
PR OUT
GND
SUCTION PRESSURE
TRANSDUCER CONNECTION
FOR HVAC UNITS WITHOUT
DIGITAL COMPRESSOR
TO VCM-X INPUT
TERMINALS AI5 & GND
OE333-23-EM-A VCM-X EXPANSION MODULE
WA
RN
IN
G
OB
SE
RV
E
POLAR
IT
Y
SA
AI1 = ENTERING AIR RH SENSOR (0-5 VDC)
AI2
AI3
AI4
GND
GND
= INDOOR AIR RH SENSOR (0-5 VDC)
= SUCTION PRESSURE A (0-5 VDC)
= SUCTION PRESSURE B (0-5 VDC)
= GROUND FOR ANALOG INPUTS
= GROUND FOR ANALOG INPUTS
AO1 = MODULATING HEATING SIGNAL
(0-10 VDC OR 2-10 VDC)
= MODULATING COOLING STAGE 1 SIGNAL
(0-10 VDC, 2-10 VDC OR 1.5-5 VDC)
= MODULATING COOLING STAGE 2 SIGNAL
(DIGITAL COMPRESSOR ONLY 1.5-5 VDC)
= WSE BYPASS 2A SIGNAL
(0-10 VDC)
= WSE BYPASS 2B SIGNAL
(0-10 VDC)
= GROUND FOR ANALOG OUTPUTS
= GROUND FOR ANALOG OUTPUTS
AO2
AO3
AO4
AO5
GND
GND
ANALOG INPUT
JUMPER SETTINGS
MUST BE SET AS
SHOWN FOR
PROPER
OPERATION
AI1
AI2
AI3
AI4
THERM
THERM
THERM
THERM
4-20mA
4-20mA
4-20mA
4-20mA
0-10V
0-10V
0-10V
0-10V
0-5V
0-5V
0-5V
0-5V
ANALOG INPUT
JUMPER
SETTINGS
RELAY 1 = RELAY 3 =
RELAY 2 = RELAY 4 =
IT IS SUGGESTED
THAT YOU WRITE THE
DESCRIPTION OF
THE RELAY OUTPUTS
YOU ARE USING IN
THE BOXES
PROVIDED ABOVE
WITH A PERMANENT
MARKER (SHARPIE®)
NOTE:
ALL BINARY INPUTS MUST BE 24 VAC ONLY.
BI1 = WATER PROOF OF FLOW - A - N.O. INPUT
= WATER PROOF OF FLOW - B - N.O. INPUT
= AIR PROOF OF FLOW - N.O. INPUT
= REMOTE FORCED OCCUPIED - N.O. INPUT
= EMERGENCY SHUTDOWN - N.C. INPUT
= DRAIN PAN OVERFLOW - A - N.O. INPUT
= DRAIN PAN OVERFLOW - B - N.O. INPUT
= DIRTY FILTER - N.O. INPUT BI2
BI3
BI4
BI5
BI6
BI7
BI8
RELAY CONTACT
RATING IS 1 AMP
MAX @ 24 VAC
RELAY 2
RELAY 1
RELAY 3
RELAY 4
RELAY
COMMON
I2C
EXPANSION
I2C
EXPANSION
24 VAC
POWER ONLY
WARNING!
POLARITY
MUST BE
OBSERVED OR
THE BOARD
WILL BE
DAMAGED
WattMaster Label
#LB102061-A
Rev.: 1C
SA Expansion Module
Orion No.:OE333-23-SA
AAON No.:
R96180