2.3
Date Code 20170927 Instruction Manual SEL-751 Relay
Installation
I/O Configuration
Figure 2.2 Slot Allocations for Different Cards
Rear-Panel Slot
A B C D E Z
Software
Reference
1
(e.g., OUT101)
n/a 3
(e.g., IN301)
4
(e.g., OUT401)
5
(e.g., AI501)
n/a
Description
Power supply and
I/O card
a
a
Power supply, two inputs, and three outputs.
CPU/comm. card
b
b
IRIG-B, EIA-232/485, fiber-optic serial and/or Ethernet ports (the IRIG-B input option is available on terminals B01, B02 for all models
except models with a fiber-optic Ethernet port (Port 1) and dual copper Ethernet port (Port 1) that have Port 3 as an EIA-232 serial port and
can input IRIG-B via the EIA-232 port and an SEL communications processor). IRIG-B input is also supported via Port 2 (EIA-232 fiber-optic
serial port).
Comm. or input/
output
c
card
c
Digital or analog.
Input/output
c
or RTD card
Input/output
c
or volt-
age/arc-flash card
4 ACI/3 AVI
card in base unit
Card Type
SELECT EIA-232/485 • n/a n/a n/a
SEL
ECT DeviceNet • n/a n/a n/a
SEL
ECT 3 DI/4 DO/1 AO (one card per relay) •• •n/a
SEL
ECT 4 DI/4 DO • • • n/a
SEL
ECT 4 DI/3 DO (1 Form B, 2 Form C) • • • n/a
SEL
ECT 8 DI • • • n/a
SEL
ECT 8 DO • • • n/a
SEL
ECT 8 AI • • • n/a
SEL
ECT 14 DI • • • n/a
SEL
ECT 4 AI/4 AO (one card per relay) • • • n/a
SEL
ECT 10 RTD n/a • n/a n/a
SEL
ECT 2 AVI/4 AFDI (MOT…x70x…)
SEL
ECT 2 AVI/4 AFDI (MOT…xL0x…)
n/a
n/a
n/a
n/a
•
•
n/a
n/a
SEL
ECT 8 AFDI (MOT…x77x…) n/a n/a • n/a
SEL
ECT 4 ACI/3 AVI (MOT…x81/82/83/85/86/87x…)
SEL
ECT 4 ACI/3 AVI (MOT…xL1/L2/L3/L5/L6/L7x…)
n/a
n/a
n/a
n/a
n/a
n/a
•
•
SEL
ECT 4 ACI (MOT...xA1/A2/A3/A5/A6/A7x...) n/a n/a n/a •
SELECT Power Supply With I/O (Slot A)
SEL
ECT Processor and
Communications Card (Slot B)
SEL
ECT I/O Expansion Card (Slot C)
SEL
ECT I/O Expansion Card (Slot D)
SEL
ECT I/O Expansion Card (Slot E)
SEL
ECT 4 ACI/3 AVI Card (Slot Z)