Catalogs > Automation Systems Catalog > I/O > In-Cabinet Distributed I/O > 1797 FLEX Ex I/O
1797 FLEX Ex I/O
| Introduction |  |
Product Design | |
Typical Configurations | |
Specifications | |
Communications Adapter | |
Digital I/O Modules | |
| Analog I/O Modules | |
Counter I/O Modules | |
HART Smart Instrumentation | |
Terminal Bases | |
Power Supplies | |
Accessory Products | |
Each FLEX Ex I/O module requires a FLEX Ex terminal base unit that snaps onto the DIN rail to the right of the I/O adapter. The terminal bases provide terminal connection points for I/O wiring and plug together to form the backplane. They are available with screw and spring terminations.
| Cat. No. | Number of Terminals | Termination Type | Wire Size | Terminal Base Screw Torque |
| 1797-TB3 | 1 row of 16 2 rows of 18 |
Cage-clamp | 22…12 AWG (0.34 mm2…2.5 mm2) stranded copper wire rated at 75 °C or higher 1.2 mm (3/64 in) insulation max. |
7…9 lb•in |
| 1797-TB3S | Spring-clamp | — | ||
Certifications
| Cat. No. | Certifications⋆ |
| 1797-TB3 | CENELEC: II 2G EEx ia IIC T4 UL, C-UL: Class I Division 1 & 2 Groups A...D T4 Class I Zone 1 & 2 AEx ia IIC T4 Class II Division 1 Groups E, F, G; Class III‡ FM: Class I Division 1 Groups A...D T4 Class I Zone 1 AEx ib [ia] IIC T4 INMETRO: BR-Ex ib IIB/IIC T4 |
| 1797-TB3S | CENELEC: II 2G EEx ia IIC T4 UL, C-UL: Class I Division 1 & 2 Groups A...D T4 Class I Zone 1 & 2 AEx ia IIC T4 Class II Division 1 Groups E, F, G; Class III‡ FM: Class I Division 1 Groups A...D T4 Class I Zone 1 AEx ib [ia] IIC T4 INMETRO: BR-Ex ib IIB/IIC T4 |
| ⋆ See the Product Certification link at http://www.ab.com for declarations of Conformity, Certificates, and other certification details. For additional certification information, see the FLEX Ex System Certification manual, publication 1797-6.5.6. | |