Allen-Bradley 1771-VHSC Very High Speed Counter Module

The specifications with Allen-Bradley 1771-VHSC Very High Speed Counter Module:

• Number of Counters: 4
• Location: 1771 Series A or B VD chassis
• Maximum Coin Value: 0-999,999 (programmable)
• Processing Time: 81W
• Processing Time (Worm Case):
  • 5.5 ms (binary)
  • 11 ms (BCD) on a configuration change
  • Typical: 1.5-29 ms
• Maximum Input Frequency:
  • 100 Hz for swell bounce (electromechanical switch user-selectable)
  • 250 kHz in encoder modes (2-channel quadrature)
  • 500 kHz in per octave rate/measurement and continuous rate modes
  • 1 MHz in counter modes (single channel)
• Inputs per Counter: 9 (A, B, Gate/reset input)
• Voltage: 5V or 12-24V (user selectable)
• Input Current:
  • Typically 7 mA at 5V
  • 7.0 to 15.0 mA at 12-24V
• Minimum Input Current: 4 mA
• Number of Outputs: 8
• Maximum Output Off-state Leakage Current: Less than 10 μA at 24V DC
• Maximum On-state Voltage Drop: 0.05Ω per output
• 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. All outputs can be on simultaneously without derating.
• Output Switching Time:
  • < 10 μs turn-on
  • Typical: 30 μs turn-off
• Filtering: Selectable — high-speed or filtered (filtered < 100Hz)
• 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)
• Conductors: Bolden 9182 or equivalent Category 211; 750 foot Belden 9182 or equivalent Category 10
• Fuse: 7AG 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 Field Wiring Arm Screw Torque:
  • Between 24 and 28 inch-pounds
  • Between 28 and 30 inch-pounds
  • 40-terminal cat. no. 1771-WN