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Rockwell Automation Publication 1718-IN001A-EN-E - June 2020
1718 Ex I/O
Install Field Wiring for Intrinsically Safe Circuits
1.
The I/O modules are wired differently depending on the type. Wire the
terminal blocks to the field devices in accordance with the information
in the Technical Data publication,
, for the I/O
modules used.
2.
Note the permissible core cross section of the conductor. We
recommend that you do not exceed a conductor cross section of:
0.5 mm
2
(20 AWG) for 1718-IBN8
0.75 mm
2
(18 AWG) for all other modules.
Connection Data for Terminal Blocks
Wiring Type
1719-TB6, 1719-TB6S, 1719-TB8,
1719-TB8S, 1719-TB8Sx2, 1719-
TB8x2, 1719-TB6F, 1719-TB8F,
1719-TB8x2F
1719-TB8x2SA
Rigid conductor cross-
section
0.14 mm
2
…1.5 mm
2
(26…16 AWG)
0.14 mm
2
…0.5 mm
2
(26…20 AWG)
Flexible conductor
cross-section
Flexible conductor
cross-section with
wire end ferrule with
no plastic sleeve
0.25 mm
2
…1.5 mm
2
(24…16 AWG)
0.25 mm
2
…0.5 mm
2
(24…20 AWG)
Flexible conductor
cross-section with
wire end ferrule with
plastic sleeve
0.25 mm
2
…0.5 mm
2
(24…20 AWG)
Not applicable
WARNING:
Improperly wired front connections can lead to dangerous confusions
of intrinsically safe and non-intrinsically safe circuits, causing explosive mixtures
to ignite.
Always make sure that the front connectors are correctly wired.
