ALLEN BRADLEY 1771-VHSC COUNTERS FOR AUTOMATION, 4 CHANNELS, 40 KHZ MAX FREQ

THE ALLEN BRADLEY 1771-VHSC IS A HIGH-SPEED COUNTER MODULE DESIGNED FOR PLC-5 CONTROL SYSTEMS, INTEGRATING INTO A SINGLE SLOT WITHIN A 1771 I/O CHASSIS. IT FEATURES FOUR INDEPENDENT COUNTING CHANNELS, EACH SUPPORTING TWO DISCRETE INPUTS FOR QUADRATURE OR UP/DOWN APPLICATIONS UP TO 20 KHZ, OR ONE DISCRETE INPUT FOR SINGLE-PHASE COUNTING AT FREQUENCIES UP TO 40 KHZ. EACH CHANNEL ALSO INCLUDES A DEDICATED RESET INPUT. THE MODULE PROVIDES EIGHT TRANSISTOR OUTPUTS FOR CONTROL AND STATUS. IT OPERATES WITH A 24 VDC FIELD POWER SUPPLY, WITH AN ASSOCIATED CURRENT SPECIFICATION OF 4 MA. EACH COUNTER CHANNEL OFFERS A 16-BIT RESOLUTION AND SUPPORTS VARIOUS COUNTING MODES, INCLUDING UP, DOWN, QUADRATURE A/B, AND SINGLE-PHASE.