Allen-Bradley 1771-VHSC Very High Speed Counter Module

Allen-Bradley 1771-VHSC Very High Speed Counter Module
Allen-Bradley 1771-VHSC Very High Speed Counter Module
Allen-Bradley 1771-VHSC Very High Speed Counter Module
Allen-Bradley 1771-VHSC Very High Speed Counter Module
Allen-Bradley 1771-VHSC Very High Speed Counter Module
Allen-Bradley 1771-VHSC Very High Speed Counter Module
Allen-Bradley 1771-VHSC Very High Speed Counter Module
Allen-Bradley 1771-VHSC Very High Speed Counter Module

Allen-Bradley 1771-VHSC Very High Speed Counter Module

This 1771-VHSC Very High Speed Counter Module was manufactured by Allen-Bradley, In Stock, 100% Guaranteed Brand New and Authentic. Link to More Information

 
Manufacturer:
Allen-Bradley
Part Number:
1771-VHSC
Country of Origin:
USA
Condition:
New With Original Package
Shipping Port:
ShangHai, Xiamen
Warranty:
12 Months
 

Overview

The VHSC module is designed for high-speed counting in industrial applications. It functions as an intelligent block transfer I/O module, allowing seamless signal interfacing with any Allen-Bradley programmable controller that supports block transfer. Through block transfer programming, the module's status data is efficiently transferred from its memory to a specified location in the processor's data table. Additionally, configuration words are transferred from the processor's data table back to the module's memory, ensuring smooth and precise operation.

Specifications

Module Specifications

  • Number of Counters: 4
  • Module Location: 1771 Series A or B I/O chassis
  • Maximum Count Value: 0-999,999 (programmable)

BTW Processing Time (Worst Case)

  • 5.5ms (binary)
  • 11ms (BCD on a configuration change)
  • 1.5-2.9ms (typical)

Maximum Input Frequency

  • 100Hz for switch bounce; electromechanical switch (user-selectable)
  • 250kHz in encoder modes (2-channel quadrature)
  • 500kHz in period/rate, rate/measurement, and continuous/rate modes
  • 1MHz in counter modes (single channel)

Inputs per Counter: 3 (A, B, Gate/Reset)

Input Specifications

  • Voltage: 5V or 12-24V (user-selectable)
  • Current: Typically 7mA @ 5V; 7.0 to 15.0mA @ 12-24V
  • Minimum Input Current: 4mA

Output Specifications

  • Number of Outputs: 8
  • Maximum Output Off-State Leakage Current: Less than 10µA @ 24V DC
  • Maximum On-State Voltage Drop: 0.05Ω x current
  • Output Control: Any number of outputs are assignable to any of 4 counter channels.
    • One "turn-on" preset value and one "turn-off" preset per output.
  • Output Voltage: 5 to 24V DC, customer supplied
  • Output Current: 2A per channel sourced out of the module. All outputs can be on simultaneously without derating.
  • Output Switching Time:
    • < 10µs turn on
    • < 100µs turn off
    • Typical: 3µs turn on; 30µs turn off

Filtering: Selectable high-speed or normal (normal = below 100Hz)

Backplane Current: 650mA

Isolation Voltage

  • 1500V between input and backplane
  • 1500V between output and backplane
  • 300V between isolated channels

Power Dissipation

  • 13 Watts (max)
  • 2 Watts (min)

Thermal Dissipation

  • 54.2 BTU/hr (max)
  • 6.8 BTU/hr (min)

Input Conductors

  • Wire Size: Belden 9182 or equivalent
  • Category: 21
  • Length: 250 feet (76.2m)

Output Conductors

  • Wire Size: 14 gauge stranded (max.)
  • Insulation: 3/64 inch (max.)
  • Category: 11

Fuse: 2AG 3A fuse (Littelfuse 225003)

Environmental Conditions

  • Operating Temperature: 0 to 60°C (32 to 140°F)
  • Storage Temperature: -40 to 85°C (-40 to 185°F)
  • Relative Humidity: 5 to 95% (without condensation)

Keying

  • Between 24 and 26
  • Between 28 and 30

Field Wiring Arm

  • Type: 40-terminal cat. no. 1771-WN
  • Wiring Arm Screw Torque: 7-9 inch-pounds
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