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 | |
- Four selectable ranges: 50 mV; 500 mV (magnetic pickupt); flowmeter; and NAMUR.
- Channel update: £4 ms (according to sampling time)
| Cat. No. | Number of Inputs/Outputs | Input Frequency, Max. | Frequency Input, Characteristics | Power Dissipation, Max. | Terminal Base Unit |
| 1797-IJ2 | • Inputs: 2 frequency inputs, 2 gate inputs • Outputs: 2 outputs |
1.0…32,767 Hz | Magnetic pickup: 50 mV, 500 mV NAMUR: 8V, 8 mA Flowmeter: low ³ 3V, high £ 6V |
4.25 W | 1797-TB3, 1797-TB3S |
| The Input Frequency Counter Module is an intelligent I/O module that is designed to perform high-speed frequency algorithms. The module provides two frequency inputs, two gate inputs, and two outputs. The frequency inputs are capable of accepting frequencies up to 32 KHz. The module accepts and returns binary data. Input devices range from magnetic pickup to flowmeters, to incremental encoders to proximity detectors. All power for input devices (24V dc) is supplied by the module. Outputs are activated by alarms. | |||||
Certifications
| Cat. No. | Certifications⋆ |
| 1797-IJ2 | 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. | |