Orion System VCM Controller - Manual (Page 14)

Technical Guide
VCM Controller 14
Input/Output Wiring Details
OE210,OE211, OE212 or OE213
Space Temperature Sensor
OVR OVR
AUX
GND
TEMP
AIN7
GND
AIN1
Note:
Either The Slide Offset Option For The Space
Temperature Sensor Or The Remote Supply Air
Temperature Reset Signal Option (by Others) May Be
Connected To AIN7 On The VCM Controller. Only
One Option Is Allowed, Not Both.
Optional Slide Offset
Wiring Connection For
OE212 or OE213
Sensor Only
Figure 10: Remote Supply Air Temperature Reset Signal Wiring
Space Temperature Sensor
The Space Temperature Sensor is typically used for constant volume
HVAC unit applications controlling one zone. The Space Temperature
Sensor is a 10K Type III thermistor sensor. The Space Temperature
Sensor should be mounted approximately 5 ft. above the floor in the
space that is to be controlled. The Space Temperature Sensor is avail-
able in a sensor only, sensor with override button, sensor with slide
adjust and sensor with slide adjust and override configurations.
When the Remote Supply Air Temperature Reset Signal option is needed
the Slide Offset option on the Room Sensor cannot be used. Only one
of these options may be used on the VCM controller.
See Figure 9 for complete Space Temperature Sensor wiring details.
Remote SAT Reset Signal
A Remote Supply Air Temperature Reset Signal can be connected to
AIN 7 for applications requiring remote reset of the Supply Air Tem-
perature Setpoint.
When the Slide Offset option on the Room Sensor is used, the Remote
Supply Air Temperature Reset Signal cannot be used. Only one of these
options may be used on the VCM controller.
The VCM controller can accept either a 0-5 VDC signal or a 0-10 VDC
signal on this input. When a 0-10 VDC signal is to be used, a resistor
must be installed. See Figure 10 for complete Remote Supply Air Tem-
perature Reset Signal wiring details.
Remote Supply Air
Temperature Reset Signal
(By Others)
AIN7
GND
0-5 VDC or 0-10 VDC Signal
GND
Pullup Resistor PU7 Must Be
Removed When Using The
Remote Supply Air Temperature
Signal Input Reset
Note:
Either The Slide Offset Option For The Space
Temperature Sensor Or The Remote Supply Air
Temperature Reset Signal Option (by Others) May Be
Connected To AIN7 On The VCM Controller. Only
One Option Is Allowed, Not Both.
Note:
When Using 0-10 VDC For The Remote Signal
Source Must Have (2) 10kOhm Resistors Wired As
Shown. When Using 0-5 VDC For The Remote
Signal These Resistors are Not Required And The
Signal Can Be Wired Directly To AIN7 and GND,
10 kOhm Resistors
Used With 0-10 VDC
Signal Only
Figure 9: Space Temperature Sensor Wiring