2.16
SEL-787 Relay Instruction Manual Date Code 20081022
Installation
Rear-Panel Connections
Fiber-Optic Serial Port
The optional fiber-optic serial port is compatible with the SEL-2814 Fiber-
Optic Transceiver and SEL-2600 series RTD Modules.
I/O Diagram
A more functional representation of two of the control (I/O) connections are
shown in Figure 2.12 and Figure 2.13.
Figure 2.12 Control I/O Connections—4 AI/4 AO Option in Slot D and Fiber-Optic Port in Slot B
Figure 2.13 Control I/O Connections—Internal RTD Option
Fiber-Optic Cable
to SEL-2600 series
+IRIG-B
–IRIG-B
IRIG-B
PS
A01
A02
–/N
+/H
External
Contacts
SEL-787 Relay
RX
D05
+
Analog Outputs
D06
—
B01 B02
IN101
IN102
A10
A11
A12 A07
A08
OUT103
D03
+
+
D11
D04
—
—
D12
D02
—
—
D10
D01
+
+
D09
A03
A04
OUT101
A05
A06
OUT102
A09
TX
Analog Inputs
AO401 AO402 AO403
AI401 AI402
+ +
+ + +
PS
A01
A02
–/N
+/H
External
Contacts
SEL-787 Relay
IN101
IN102
A10
A11
A12
+IRIG-B
–IRIG-B
IRIG-B
B01 B02
A07
A08
OUT103
A03
A04
OUT101
A05
A06
OUT102
A09
D06
COMP/
SHLD
D05
—
D04
+
RTD02
D03
COMP/
SHLD
D02
—
D01
+
RTD01
D09
COMP/
SHLD
D08
—
D07
+
RTD03
Notes:
• Power supply rating (125–250 Vac/dc or 24–48 Vdc) depends on relay part number.
• Optoisolated inputs IN101 and IN102 are standard and located on the card in Slot A.
• All optoisolated inputs are single-rated: 24, 48, 110, 125, 220, or 250 Vac/Vdc. Standard inputs IN101/102 may have a
different rating than the optional IN401/402/403 (not shown).
• Output contacts OUT101, OUT102, and OUT103 are standard and located on the card in Slot A.
• The Analog (transducer) Outputs shown are located on the optional I/O Expansion card in Slot D.
• The fiber-optic serial port is located on the card in Slot B. A Simplex 62.5/125 µm fiber-optic cable is required to connect
the SEL-787 with an SEL-2600 series RTD Module. This fiber-optic cable should be 500 meters or shorter.
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