Mounting and Wiring VMA1200 Series Controllers Technical Bulletin
8
Phone Jack Polarization
The figure below illustrates the polarization of the 6-pin and 8-pin
phone jacks on the VMA or room sensor. Pin 1 is to the extreme left as
you face the jack opening, tab notch down.
If you need to create your own cable, refer to
Fabricating Your Own
Interconnection Cable
in
Appendix A: Reference Information
located
in the
Variable Air Volume Modular Assembly (VMA) 1200 Series
Overview and Engineering Guidelines Technical Bulletin
(LIT-1162350).
8-pin
6-pin
VMA
Room Sensor
Pin 1
phonejack
Figure 3: Phone Jack Polarization
Table 1: VMA Phone Jack Pinouts
Pin
Signal
1
BI-1 Temp Occ/LED (Light-Emitting Diode)
2
AI-2 Setpoint
3
AI-1 Temperature Sensor
4
AI-1 COM (sensor)
5
+15 VDC
6
+15 COM/ZB COM
7
COM (setpoint)
8
ZB