2.3
Date Code 20100129 Instruction Manual SEL-751A Relay
Installation
I/O Configuration
Figure 2.2 Slot Allocations for Different Cards
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)
SELECT 4 ACI Card (Slot Z)
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 fiber-optic Ethernet port (P1) and dual copper Ethernet port (P1) 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 (optional 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
voltage card
4 ACI CT card
in base unit
Card Type
SELECT EIA-232/485 l n/a n/a
SEL
ECT DeviceNet l n/a n/a
SEL
ECT 3 DI/4 DO/1 AO (one card per relay) lll
SEL
ECT 4 DI/4 DO l l l
SEL
ECT 8 DI l l l
SEL
ECT 8AI l l l
SEL
ECT 4 AI/4 AO (one card per relay) l l l
SEL
ECT 10 RTD n/a l n/a
SEL
ECT 3 AVI (MOT… x71x… ) n/a n/a l
SEL
ECT 5 AVI (MOT … x72x… ) n/a n/a l
SEL
ECT 5 AVI (MOT … x73x… ) n/a n/a l
SEL
ECT 3 AVI/4 AFDI (MOT … x74x… ) n/a n/a l