Orion System VCM Controller - Manual (Page 18)

Technical Guide
VCM Controller 18
Figure 14: Economizer Damper Actuator Wiring
GND
AAON
Unit
Terminals
INPUTS
GND
AOUT1
AOUT2
GND
+VDC
AIN1
AIN2
AIN3
AIN4
AIN5
AIN7
E
R
EC1
24 VAC Power Source
Sized For Actuator VA Load
24
V
A
C
GND
2-10 VDC
Output
Economizer Damper Actuator
(Belimo Actuator Shown)
Y1 3 Y1 3
+ 2 + 2
COM - 1 COM - 1
OE331-21-VCM
VCM Controller Board
Belimo Actuator Wiring
Shown. Consult Factory For
Other Manufacturers Wiring
Instructions
Economizer Damper Actuator
The Economizer Damper Actuator Signal voltage output is a 2-10 VDC
output. This signal output is used by the VCM controller to modulate
the Economizer Damper Actuator in order to control the amount of
Outdoor Air delivered to the HVAC unit for Free Cooling and/or Indoor
Air Quality requirements. See Figure 14 for detailed wiring.
Warning: It is very important to be certain that all wiring is
correct as shown in the wiring diagram below.
Failure to observe the correct polarity will result in
damage to the actuator or VCM controller.
Input/Output Wiring Details