GE EP-5261 - Serial Connection Guidelines; Installation in Hazardous Areas

RSTi-EP Slice I/O Serial Communication Module 11
GFK-2992B
Connecting RS-485 or RS-422 Device
The serial device must be connected using a twisted pair cable (U/UTP, Type Cat- 3 or J-2YY-2x2x0,6).
Maximum Cable Length RS-422/485
Baud Rate in kbps
Maximum Cable Length
≤ 19200
1200 m (3937 ft), shielded
38400
500 m (1640 ft)
57600
250 m (820 ft)
115200
200 m (656 ft)
• RS-485: Use one core pair for Data+/Data–; use any wire for the ground singal GND COM. The remaining free
wires should be connected to ground.
• RS-422: Connect the wires for transmitting signals TXD+/TXD– and those for receiving signals RXD+/RXD– in
pairs respectively. Use any wire for the ground singal GND COM. The remaining free wires should be connected
to ground.
Refer to the RSTi-EP Slice I/O User Manual (GFK-2958) for additional information.
Technical assistance is available at http://support.ge-ip.com
.
Installation in Hazardous Areas
 EQUIPMENT LABELED WITH REFERENCE TO CLASS I, GROUPS A, B, C & D, DIV. 2 HAZARDOUS AREAS IS SUITABLE FOR USE IN
CLASS I, DIVISION 2, GROUPS A, B, C, D OR NON-HAZARDOUS AREAS ONLY
 WARNING - EXPLOSION HAZARD - SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION 2;
 WARNING - EXPLOSION HAZARD - WHEN IN HAZARDOUS AREAS, TURN OFF POWER BEFORE REPLACING OR WIRING
MODULES; AND
 WARNING - EXPLOSION HAZARD - DO NOT CONNECT OR DISCONNECT EQUIPMENT UNLESS POWER HAS BEEN
SWITCHED OFF OR THE AREA IS KNOWN TO BE NONHAZARDOUS.
ATEX Marking
II 3 G Ex nA IIC T4 Gc
Ta: -20 to +60°C (-4 to +140 °F)
For public disclosure