FLEX I/O and FLEX Integra

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140 24V dc 2 Channel Very High Speed Counter Module Cat. No. 1794-VHSC FLEX I/O and FLEX Integra Product DataWiringConnections forChannel 0 Counter/Frequency InputChannel 1 Counter/Frequency Input1794-TB3G shown 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15ARow 1A A B B Z Z O0 O1 A A B B Z Z O2 O324V Inputs24V Inputs16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33BRow 2A A B B Z Z R0 R1 A A B B Z Z R2 R3Chassis Gnd5V Inputs5V InputsChassis Gnd34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51CRow 3+24V COM+V-V6 Chassis Groundfor Shields+V-V+24VCOMPower for 00 to 01 Power for 02 to 03Where:A, A = incremental encoder input A (+5 or +24V dc)B, B = incremental encoder input B (+5 or +24V dc)Z, Z = incremental encoder input Z (+5 or +24V dc)O = sourcing outputsR = returns for sourcing outputs+V = +5 or +24V dc isolated power externally supplied for outputs (1A max)-V = negative isolated power connection (1A max)+24V dc = 24V dc terminal base power for moduleCOM = return for +24V dc terminal base power for moduleChassis Gnd = chassis ground for input or output cable shields 41704ATTENTION!To reduce susceptibility to noise, power analog modules anddigital modules from separate power supplies. Do not exceed alength of 10m (33ft) for module dc power cabling.Total current draw through the terminal base unit is limited to10A. Separate power connections to the terminal base unit maybe necessary.IncrementalChannel 0 Channel 1EncoderInputs+24V Inputs +5V Inputs +24V Inputs +5V InputsInput A A-0 B-17 A-8 B-25Input A A-1 B-18 A-9 B-26Input B A-2 B-19 A-10 B-27Input B A-3 B-20 A-11 B-28Input Z A-4 B-21 A-12 B-29Input Z A-5 B-22 A-13 B-30OutputsSourcingOutReturn Outputs SourcingOutReturnO0 A-6 B-23 O2 A-14 B-31O1 A-7 B-24 O3 A-15 B-32+24V Terminals B-34 and C-5024V COM Terminals B-35 and C-51+5V or +24V output power Terminals B-37 and C-46-V output power Terminals B-39 and C-48Chassis Ground Terminals B-16, B-33 and C-40 thru C-45Publication 1794-2.1 - January 2000
FLEX I/O and FLEX Integra Product Data 24V dc 2 Channel Very High Speed Counter Module Cat. No. 1794-VHSC 141Specifications - 1794-VHSCInput SpecificationsModule LocationCat. No. 1794-TB3G or -TB3GS Terminal Base UnitNumber of Inputs per Counter 2 groups of A/A, B/B, and Z/Z pairs with 5V dc or15-24V dc terminationsInput Voltage5V dc or 15-24V dc (determined on terminal baseterminations)Input Current (Typical) 5V dc terminations:19.1mA @ 5V dc25.7mA @ 6V dc15-24V dc terminations:6.1mA @ 15V dc10.2mA @ 24V dcInput Off-State Voltage 5V dc terminations: 5mAOn-State Voltage (max) 5V dc terminations: +6V15-24V dc terminations: Refer to derating curveInput Frequency (max) 1.0MHz counter and encoder X1 (no filters)500kHz encoder X2 (no filters)250kHz encoder X4 (no filters)Input Filter Selections 5: Off, 10µs, 100µs, 1.0ms, 10.0ms per A/B/Z groupOutput SpecificationsNumber of Outputs 2 isolated groups of 2 (0.5A max @ 5V dc;1.0A max @ 12-24V dc)Output ControlOutputs can be tied to 8 compare windowsOutput Supply Voltage Range 5-7V dc; 10-31V dcOff-State Leakage Current
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FLEX I/O and FLEX Integra Product D
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16 FLEX I/O Terminal Base Unit’s
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20 3-Wire Screw Clamp Terminal Base
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22 Screw Clamp Temperature Terminal
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26 Terminal Base Unit Cat. No. 1794
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28 1794-TBN and -TBNF Wiring FLEX I
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30 AC Module’s Table of Contents
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32 120V ac 8 Input Module Cat. No.
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34 120V ac 8 Isolated Input Module
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38 120V ac 8 Output Module Cat. No.
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40 120V ac 8 Output Isolated Module
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42 120V ac 16 Output Module Cat. No
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46 220V ac 8 Output Module Cat. No.
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48 DC Module’s Table of Contents
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50 DC Module’s Recommended Termin
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FLEX I/O and FLEX Integra

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