2-14 Installation Date Code 20010731
SEL-352-1, -2 Instruction Manual
fiber-optic transceivers are available. The SEL-2800 family of transceivers provides fiber-optic
links between devices for electrical isolation and long-distance signal transmission. Call the
factory for further information on these products.
Table 2.1: SEL-352 Relay Communications Cable Numbers
SEL-352 Port #
Connect to Device
(gender refers to the device)
SEL Cable #
2, 3, 4 PC, 25-Pin Male (DTE) C227A
2, 3, 4 PC, 9-Pin Male (DTE) C234A
2, 3 SEL-2020 or SEL-2030 without IRIG-B C272A
2 SEL-2020 or SEL-2030 with IRIG-B C273A
2 SEL-IDM, Ports 2 through 11 Requires a C254 and C257 cable
2, 3 Modem, 5 Vdc Powered (Pin 10) C220*
2, 3 Standard Modem, 25-Pin Female
(DCE)
C222
* The 5 Vdc serial port jumper must be installed to power the modem using C220 (see EIA-232
Serial Port Jumpers later in this section).
Clock Synchronization, IRIG-B
Refer to Table 2.1 for a list of cables that you can purchase from SEL for various time-
synchronizing applications.
The SEL-352 Relay accepts a demodulated IRIG-B format signal for synchronizing an internal
clock to some external source such as the SEL-2020 or SEL-2030 Communications Processor,
SEL-IDM, or satellite time clock. Connect the IRIG-B source to the relay through the
connectors for serial Ports 1 or 2. Refer to the port pin definition of each port for the appropriate
connection.
Plug-In Connectors (Connectorized Model 0352xY)
For the Connectorized SEL-352 Relay model 0352xY, the wiring harness kit, designated
SEL-WA0352, must be ordered separately. It contains several pre-wired connectors for the relay
current and voltage inputs, power, and ground connections. It also contains unwired connectors
for the relay optoisolated inputs, contact outputs, and EIA-485 serial port connections. A small
slotted-tip screwdriver and a wire stripping tool are required for preparation of these unwired
connectors. Refer to the Ordering Information for the SEL-WA0352 wiring harness for selection
of wire size, type, and length for the pre-wired connectors.
The SEL-WA0352 wiring harness includes the following connectors (not pre-wired):
Two eight-position female plug-in connectors for output contacts OUT101 through
OUT104 and OUT105 through ALARM.
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