Schweitzer Engineering Laboratories SEL-3031 - Figure 2.6 SEL-C693 Cable: Two-Wire EIA-485 Connections; Figure 2.7 EIA-232 and EIA-485 DB-9 Connector Pin Numbers

Date Code 20181001 SEL-3031 Instruction Manual
Installation
Communications
2.17
Figure 2.6 SEL-C693 Cable: Two-Wire EIA-485 Connections
Fiber-Optic Serial Port
Order the fiber-optic option for Port 1 for safety and long-distance communications as
far as 4 km (2.5 mi). The fiber-optic port is an SEL-2812-compatible device that can
connect directly to any SEL-2812-compatible device or SEL-2812 Fiber-Optic
Transceiver, using multimode fiber-optic cable with a core diameter of 50 to 200 Pm.
When working with this device, observe the following safety precautions:
WARNING
➤ Do not look into the fiber (laser) ports/connectors.
➤ Do not look into the end of an optical cable connected to an optical
output.
➤ Do not perform any procedures or adjustments that this instruction
manual does not describe.
➤ During installation, maintenance, or testing of the optical ports, use
only test equipment qualified for Class 1 laser products.
➤ Incorporated components, such as transceivers and laser emitters, are
not user serviceable. Return units to SEL for repair or replacement.
Port Connector and Communications Cables
Figure 2.7 shows the EIA-232 and EIA-485 DB-9 connector pin numbering for the
SEL-3031.
Figure 2.7 EIA-232 and EIA-485 DB-9 Connector Pin Numbers
Port 1 EIA-485
9-Pin Male
D Subconnector
2-Wire EIA-485
2-Wire EIA-485
Tinned Wires
1
7
2
8
5
5
Data+
Data-
GND
GND
No Connection
TXD+
RXD+
TXD–
RXD–
GND
GND
SHELL
Pin #
5 4 3 2 1
9 8 7 6
Preliminary Copy—Subject to Change