Rockwell Automation Publication 1719-IN001D-EN-E - November 2020 11
1719 Ex I/O Installation Instructions
Field Wiring
Field connections can be made to the I/O modules using screw terminals or spring terminals. Use the terminal blocks from the range of accessories. For more information,
see Accessories in Chapter 2 of the 1719 Ex I/O User Manual, publication number 1719-UM001.
Front screw terminals or spring terminals are ideal for future expansion or for replacement of individual field connections, since the terminal can remain in the front socket
of the I/O module during wiring.
Installing Field Wiring
1. The I/O modules are wired differently depending on the model and function. Wire the terminal blocks to the field devices in accordance with the information in the
technical data sheets for the I/O modules used.
2. Pay attention to the conductor cross-sections. We recommend that you do not exceed a conductor cross-section of 0.75 mm
2
(18 AWG).
3. Make sure that conductors are insulated all the way up to the terminal.
4. If you use multi-stranded conductors, make sure that they are equipped with wire end ferrules. We recommend using wire end ferrules approved according to the
DIN 46228-4 directive.
5. Only use blue terminal blocks for intrinsically safe circuits.
6. Plug the terminals into the front sockets of the corresponding I/O modules and tighten the terminals using the screws.
7. Connect unused cables to terminals or ensure that unused cables are fixed securely and insulated.
Coding
You can code the front sockets of the I/O modules and terminals so that the terminals and the associated field devices can be assigned to exactly one front socket.
Use the 1719-CP coding pins for the following terminal blocks: 1719-TB6, 1719-TB6S, 1719-TB8, 1719-TB8S, 1719-TB8Sx2, 1719-TB8x2, 1719-TB6F, 1719-TB8F, 1719-TB8x2F.
WARNING: Risk of explosion
Do not operate relay circuits without free-wheeling diodes as this can damage the relay contacts and cause sparks, which can cause explosive mixtures
to ignite.
Fit free-wheeling diodes in relay circuits containing inductive loads.
WARNING: Risk of explosion
Measuring instruments that do not meet the requirements for use in hazardous areas can cause explosive mixtures to ignite.
Only use accessories and devices that are approved for use in the respective environment.
ATTENTION: Loss of intrinsic safety
If you operate circuits with Ex i type protection with non-intrinsically safe circuits, you can no longer use them as circuits with Ex i type protection.
Use only Ex i-certified measuring instruments in conjunction with Ex i-certified I/O 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
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 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: Risk of explosion
Improperly wiring front connections can result in dangerous mistakes being made and cause explosive mixtures to ignite.
To Next Page
Loading...
Need help?
General
