Eaton Crouse-Hinds MTL5500 Series - MTL5051 Serial Data Comms Isolator

INM 5500 Rev 11
71
10.3 MTL5051 serial data comms isolator
The MTL5051provides either bi-directional serial data communications from a computer system
in a safe area to instrumentation in a hazardous area or data communications across
a hazardous area. It is used to provide a fully floating dc supply for, and serial data
communications to MTL640 text displays and MTL650 text and graphics terminals or to other
IS and non-IS instrumentation and keyboards.
10.3.1 Wiring connections
See the figures 10.3 and 10.4 and the terminal specifications in tables 10.2 and 10.3 for wiring
connections.
Figure 10.3: MTL5051 wiring diagram (to a hazardous area)
Hazardous area Safe area
Safe area
Hazardous area
Figure 10.4: MTL5051 wiring diagram (across a hazardous area)