The 1734-VHSC24 is a POINT IO 24VDC High-Speed Counter Module mediates between customer’s process signals and the POINT BUS back plain module which conveys command information, via the signal conditioner and the function block. It is a cUL-us, CE certified, and DIN rail mounted counter module with an open-style enclosure. The 1734-VHSC24 24V weighs approximately 1.15 oz, with dimensions of 2.21in x 0.47in x 2.97in. It has a load-dependent power dissipation of 1.9W, and a maximum thermal dissipation of 6.5 BTU/hr, which is equally load-dependent. The 1734-VHSC24 24V has an operational shock rate of 30G and a vibration of 5G at 10-500HZ. It functions best at a temperature range between -4 and 131 deg. Fahrenheit at 5-95% non-condensing relative humidity.

The 1734-VHSC24 has one counter, and a single isolated 1 group of 2 with 0.5A, 24V DC output capacity, which is connected to any of the 4 compare windows. The 1734-VHSC24 does not require any external power source to power its module. Its input voltage is between 15 and 24V DC, and its input current is 6.1mA at 15V DC and 10.2mA at 24V DC. It also has an output voltage supply between 10 and 28.7V DC, at a maximum output current of 0.5A. The 1734-VHSC24 has input filter selection choices between the settings of 10 ?s (50 kHz), 100 ?s (5 kHz), 1ms (500 Hz), 10ms (50 Hz), or OFF.

The 1734-VHSC24 is a Very High-Speed Counter module that is manufactured by Allen-Bradley for the POINT IO product family. This module belongs to the Specialty IO category of the POINT IO product family. This module has One (1)-1 group of A/Aret, B/Bret and Z/Zret inputs and One (1) isolated group of 2 capable of 0.5 A at 24V DC.

This module acts as signal conditioners and function blocks through the provided counter instruction inside the Programmable Logic Memory (PLC). This counter is ideally designed for use with encoder for position and motion control, Pulse generators such as speed sensors through the cutting of magnetic flux, Mechanical limit switches for product counters, totalizers from transmitters and many other applications. This module can accept up to 1 MHz of switching frequency.

Input filtering is provided with this module to fine tune the counting accuracy and to eliminate unwanted noises. Adjustable frequencies include 50 Hz, 500 Hz, 5 kHz, 50 kHz or turned off.

The module’s count is in the form of a 24-Bit binary format which ranges 0 to 16, 777,215 which is then stored inside a 32-BIT register. This counter module includes a user-selectable preset and rollover settings.

This very high-speed counter module may operate in Counter, Encoder, Period/rate mode, Continuous/rate mode, Rate measurement mode, Pulse width modulation (PWM) mode, and Pulse generator mode. The main difference with a Counter and encoder function is that in Counter mode, the module reads incoming single-phase pulses while in Encoder mode, Two-Phase quadrature pulses are read.