Orion System VCM Component - Manual (Page 38)

Component & System Wiring 38
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DATE: B. Crews
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OVCM-SuctPress-WO-DSC-1A.CDR
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03/06/06
VCM Controller Wiring Detail
Suction Pressure Transducer W/O DSC
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 Boards must be wired in such a way that power to both the
expansion boards and the controller are always powered together. Loss of power to the expansion board will cause the
controller to become inoperative until power is restored to the expansion board.
BK
RD
WH
Transducer Cable
With Built-In Signal
Conditioner
OE331-21-VCM
VCM Controller Board
OE275-01-NDC
Suction Pressure Transducer
(250 PSIG)
With Signal Conditioner
AIN5
GND
+VDC
Pullup Resistor PU5
Must Be Removed
Note:
Use This Diagram Only For Applications Without
Copeland Digital Scroll Compressors. For Applications
With Copeland Digital Scroll Compressors See The
Wiring Detail For Suction Pressure Transducers With
Copeland Digital Scroll Compressors.
Suction Pressure Transducer Without Digital Compressor - Wiring