Communicator | 3.05
8
2 PRECAUTIONS
Observe the following precautions when using your unit.
•
Always connect temperature and sensor shields to earth ground.
Avoid mixing high voltage
wiring with sensor and low voltage wiring
.
•
Keep the controller as far as possible from heavy contactor boxes and other sources of
electrical interference
.
•
Do not connect communication wire shields, which go from one house to another at both
ends. Connect them at one end only. Connection at both ends can cause ground loop
currents to flow, which reduce reliability
.
•
The COM connection for communications is not the shield wire. The COM, RX and TX wires
must connect to each other at all controllers
.
