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2.3
Date Code 20081022
Instruction Manual
SEL-787 Relay
Installation
I/O Configuration
Figure 2.2
Slot Allocations for Different Cards
SEL
ECT
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
6 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 models with Port 3 as an EIA-485 serial port. Models
with Port 3 as an EIA-232 serial port can input IRIG-B via the EIA-232 port and an SEL communications processor).
Comm. or input/
output
c
card
c
Digital or analog.
Input/output
or RTD card
Input/output
voltage/current card
CT card in
base unit
Card Type
SEL
ECT
EIA-232/485
z
n/a
n/a
SEL
ECT
DeviceNet
z
n/a
n/a
SEL
ECT
3 DI/4 DO/1 AO (one card per relay)
z
z
z
SEL
ECT
4 DI/4 DO
z
z
z
SEL
ECT
8 DI
z
z
z
SEL
ECT
4 AI/4 AO (one card per relay)
z
z
z
SEL
ECT
10 RTD
n/a
z
n/a
SEL
ECT
1 ACI/3 AVI
n/a
n/a
z
SEL
ECT
1 ACI
n/a
n/a
z
Содержание SEL-787
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