1771-VHSC Allen-Bradley | High Speed Counter Module

1771-VHSC Allen-Bradley High Speed Counter Module

General

Number of Counters: 4

Module Location: 1771 Series A/B I/O chassis

Maximum Count Value: 0-999,999 (programmable)

BTW Processing Time: 5.5 msec (binary), 11 msec (BCD), 1.5-2.9 msec (typical)

Input Specifications

Frequency: 100 Hz (switch bounce), 1 MHz (counter modes)

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

Input Voltage: 5V or 12–24V (selectable)

Input Current: 7 mA @ 5V; 7-15 mA @ 12-24V

Output Specifications

Outputs: 8

Leakage Current: < 10 µA @ 24V DC

Voltage Drop: 0.05Ω x current

Control: Assignable to any of 4 channels

Voltage: 5 to 24V DC

Current: 2A per channel

Switching Time: < 10 µs (on), < 100 µs (off)

Additional Specifications

Backplane Current: 650 mA

Isolation Voltage: 1500V (input/output), 300V (channels)

Power Dissipation: 13W (max), 2W (min)

Thermal Dissipation: 54.2 BTU/hr (max), 6.8 BTU/hr (min)

Environmental

Operating Temperature: 0 to 60°C

Storage Temperature: -40 to 85°C

Certifications: UL Class I, Division 2