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1794-VHSC Flex I/O

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Allen Bradley
1794-VHSC Refurbished
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 Product Description

2-Channel 1 Mhz Very High Speed Counter 1794 FLEX I/O

 Warranty Information

All Refurbished products come with a 1-Year Automation Webstore Warranty.

 Product Overview

The 1794-VHSC is an intelligent electronic module that belongs to the Flex IO product family. This module is a Very High-Speed Counter that is designed for use in industrial applications and interface with high-frequency switching or binary instruments such as encoder, switches, pulse generators and other devices.

the 1794-VHSC supports multiple modes of operation such as Counter Mode, Encoder X1 Mode, Encoder X2 Mode, Encoder X4 Mode, Period / Rate mode, Continuous rate, rate measurement frequency and Pulse Width Modulation (PWM).

This module especially features Two (2) configurable counter for Three (3) operating modes and Four (4) outputs in paired isolation. Input are capable of Single-Ended of Differential inputs while outputs are current sourcing rated at 5 or 12 to 24VDC, 0.5 maximum mA @ 5V; 1A max @ 12 to 24V. Input counts for this module can reach up to 16,777,215 binary number.

Counted value may be reset by the Reset Count bits located in WORD 0, BIT 0 AND 4 of the Control Word. Setting the bit to 1 will reset the corresponding counter to Zero (0). Alternative way to reset this counter using the gate / reset input.

This module may only be used with Flex IO Ethernet Adapter with part number 1794-AENT or 1794-AENTR. Configuration is received through the Ethernet adapter module. After configuration is downloaded and operation of the module is defined, input pulses are converted by the module into binary information and stores locally, waiting for the adapter request to transfer data. One request is received, data is transferred through the FlexBus and made available to the Ethernet adapter which then is transmitted over Ethernet network to the processor. This is a continuously happening in high frequency to ensure updated data is provided by the module.VIIIVThe 1794-VHSC is a Flex IO Very High-Speed Counter Module. It has Two (2) inputs and Two (2) outputs ideal for encoder and switches that actuates in high frequency. This module is compatible with Flex IO Ethernet adapter to implement distributed I/O application.

 Product Specifications

Manufacturer: Rockwell Automation
Brand: Allen-Bradley
Product Description: Flex IO High Speed Counter Module
Part Number: 1794-VHSC
Number of Inputs: 2
No. of inputs per counter: 2 groups of A/A, B/B, and Z/Z pairs with 5V DC or 15…24V DC terminations
Input Voltage: 5V DC or 15…24V DC (Determined by terminal base terminations)
Input Current: 5V DC terminations: 19.1 mA @ 5V DC 25.7 mA @ 6V DC? 15…24V DC terminations: 6.1 mA @ 15V DC 10.2 mA @ 24V DC
Number of outputs: 2 isolated groups of 2: (0.5A @ 5V DC, max? 1.0A @ 12…24V DC, max
Output control: Outputs can be tied to 8 compare windows
Voltage range, output supply: 5…7V DC? 10…31V DC
Terminal base: 1794-TB3G and 1794-TB3GS
Mounting: DIN Rail
Operating Temperature: 0 to 55 C (32 to 131 F)
Storage Temperature: -40 to 85 C (-40 to 185 F)
Vibration: 5g @ 10 to 500 Hz
Operating Shock: 30 g
stockLevelRefurbished: 3
stockLevelNewSurplus: 4

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