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 | |
- Modules are available in different densities ranging from 8 to 16 points.
- Electrical ranges from 65V ac to 276V ac and from 10V dc to 60V dc.
- Isolated inputs and outputs can be used in application such as motor control centers where individual control transformers are used.
- Protected outputs (P) have auto-reset of outputs.
- Modules detect, indicate, and report the following faults:
- open input or output field devices or wiring
- shorted output field devices
- shorted input or output wiring
- open input or output field devices or wiring
- Selectable input filter times from <1 to 60 ms.
- LED for each channel indicating status of:
- corresponding input device
- output signal
- corresponding input device
FLEX Ex Digital dc Input Module
16-point non-isolated NAMUR input module.
| Cat. No. | Number of Inputs | Voltage, On-State Input, Nom. | Input Delay Time⋆ | Current, Off-State Input, Max. | Power Dissipation, Max. | Terminal Base Unit |
| 1797-IBN16 | 16 | NAMUR compatible | 1…33 ms selectable | 1.2 mA | 2.8 W | 1797-TB3, 1797-TB3S |
| ⋆ OFF to ON and ON to OFF. |
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FLEX Ex Digital dc Output Module
| Cat. No. | Number of Outputs | Voltage, On-State Output, Nom. | Output Delay Time⋆ | Power Dissipation, Max. | Terminal Base Unit |
| 1797-OB4D | 4 current sourcing | 24V DC | £ 1.2 ms | 5 W | 1797-TB3, 1797-TB3S |
| ⋆ OFF to ON and ON to OFF. | |||||
1797-OB4D Output Voltage/Current Capability
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Certifications
| Cat. No. | Certifications⋆ |
| 1797-IBN16 | CENELEC: II (1) 2G EEx ia/ib IIB/IIC T4 II (1D) (2D) UL, C-UL: Class I Division 1 Groups A...D T4 Class I Zone 1 AEx ib[ia] IIC T4 Class II Division 1 Groups E, F, G(1); 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-OB4D | CENELEC: II (1) 2G EEx ia/ib IIB/IIC T4 II (1D) (2D) UL, C-UL: Class I Division 1 Groups A...D T4 Class I Zone 1 AEx ib[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. | |