| Terminal block/Port label | Terminal labels | Function, electrical ratings/requirements | Recommended cable type |
|---|---|---|---|
|
SA BUS |
+ - |
SA Bus Communications |
0.6 mm (22 AWG) stranded, 4-wire (2 twisted-pairs), shielded cable recommended. Note: The + and - wire are one twisted pair, and the
COM and SA PWR are the second twisted pair of wires.
|
|
COM |
SA Bus Signal Reference and 15 VDC Common |
||
|
SA PWR |
15 VDC Supply Power for Devices on the SA Bus (Maximum total current draw for SA Bus is 240 mA.) |
||
|
Sensor (Port) |
Sensor |
RJ-12 6-Position Modular Connector provides: SA Bus Communications SA Bus Signal Reference and 15 VDC Common 15 VDC Power for devices on the SA bus |
24 AWG 3-pair CAT3 cable <30.5 m (100 ft) |
| Ethernet (Ports) |
ETH1
ETH2 |
Connect to BACnet/SC or BACnet/IP Network |
Ethernet ports; 10/100 Mbps; 8-pin RJ-45 connector |
|
24~ |
HOT |
24 VAC Power Supply - Hot Supply 20–30 VAC (Nominal 24 VAC) |
0.8 mm to 1.0 mm (18 AWG) 2-wire |
|
COM |
24 VAC Power Supply Common (Isolated from all other Common terminals on controller) 14 VA |
Note: The SA Bus
wiring recommendations are for MS/TP bus communications at 38.4k baud.