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72mm Counters
72mm Digital Counters for Industrial Automation and Machine Control
ATC Diversified Electronics offers a range of 72mm industrial counters for production counting, batching, machine-cycle control, material handling, packaging, process equipment, and other automation applications requiring accurate event or pulse counting.
The collection includes predetermining counters, high-speed counters, programmable computing counters, single and dual preset counters, batch counters, totalizers, and timer/counter controls. Depending on the model, available functions include count-up and count-down operation, programmable presets, repeat-cycle control, high-speed pulse counting, input scaling, internal totalizing, memory, relay outputs, and multiple display modes.
ATC 72mm counters are designed for compact industrial panel installations. Several models use plug-in housings that simplify replacement without requiring the surrounding field wiring to be disconnected.
Why Choose ATC 72mm Counters?
Multiple Counter Technologies: Choose from traditional predetermining counters, microprocessor-based computing counters, programmable preset counters, and combined digital timer/counter designs.
Wide Counting Ranges: Depending on the selected model, ATC 72mm counters can handle counts ranging from individual events into the tens of thousands.
High-Speed Counting: Selected models support high-speed pulse inputs for applications using compatible sensors, switches, encoders, or electronic pulse sources.
Single and Dual Presets: The 376B Series is available with one or two programmable count setpoints and can also support batch-counting applications.
Count Up and Count Down: The 366C Long-Ranger Computing Counter provides programmable display operation for applications requiring upward or downward count indication.
Internal Totalizing: Selected models maintain a cumulative count in addition to the active production or preset-counting cycle.
Timer and Counter in One Device: The 385A provides both repeat-cycle timing and counting functions with EEPROM memory and multiple presets.
Compact Panel Installation: The collection uses 72mm panel formats designed for industrial control cabinets and OEM machine panels.
354C Shawnee II High-Speed Counter
The 354C Shawnee II High-Speed Counter is a predetermining counter designed for industrial pulse-counting applications. Available configurations provide preset ranges extending into the tens of thousands of counts, with a four-digit cycle-progress display on indicating models.
The 354C can be configured for single-cycle interval or delayed operation as well as repeat-cycle pulse operation. Output options include a standard SPDT relay or an optional solid-state switch module, depending on the selected configuration.
Plug-in construction, industrial noise immunity, and a compact 72mm panel housing make the 354C suitable for existing machinery as well as new industrial counting applications.
356C Shawnee II Digital Counter
The 356C Shawnee II Digital Counter is a count-up predetermining counter with a four-digit cycle-progress display and manually adjustable preset.
Available count ranges include 1 to 9,999 counts and configurations extending to 99,990 counts. The counter accepts pulses as short as 1 millisecond and can operate at rates up to 4,000 counts per minute under the specified input conditions.
An anti-bounce circuit helps reject unwanted contact bounce, while instantaneous and delayed DPDT relay outputs provide control signals for compatible machine and process circuits.
366C Long-Ranger Computing Counter
The 366C Long-Ranger Computing Counter uses an internal microcomputer to provide flexible count control and programmable cycle indication. Three selectable ranges cover counts from individual events through approximately 99,900 counts.
The display can be configured for UP & STOP, UP & GO, DOWN & STOP, or DOWN & GO operation, allowing the displayed count behavior to match the machine or production process.
The 366C also incorporates contact-bounce and electrical-noise rejection, plug-in construction, and instantaneous and delayed relay outputs.
376B Single and Dual Preset Digital Counter
The 376B Series Digital Counter provides a more programmable approach to industrial counting. It is available as a single preset or dual preset counter, and the dual preset version can also be configured for batch counting.
Programmable presets range from 1 to 999,999. The 376B also provides an internal totalizing counter, six selectable decimal positions, programmable scaling, sinking, sourcing, and TTL-compatible inputs, and relay or NPN transistor output options.
Supported operating modes include bidirectional counting, quadrature counting, count with inhibit, and interval counting. The single preset version can count at frequencies up to 10 kHz in supported count-up applications.
385A Digital Timer / Counter with Memory
The 385A Series Digital Timer / Counter with Memory combines repeat-cycle timing and counting in one 72mm control.
In counter mode, the 385A provides two counting ranges covering an overall span from 1 to 99,900 counts. Three adjustable presets, an internal cycle totalizer, dual LED displays, and EEPROM memory support applications requiring repeatable counting sequences and retained setup information.
When used as a timer, the same control covers timing from 0.01 second to 999 hours across nine ranges, making the 385A useful where both timing and counting functions may be required from one panel-mounted device.
Predetermining and Preset Counter Control
A predetermining counter allows an operator to establish a target count before a machine cycle begins. As input pulses accumulate, the counter compares the running total to the preset value and changes its output when the programmed count is reached.
This approach can be used for production quantities, batching, packaging, part counting, machine sequencing, indexing, cut-to-length systems, and other processes where an electrical action must occur after a defined number of events.
72mm Counters for Production and Packaging Equipment
ATC counters can be integrated with compatible photoelectric sensors, proximity sensors, switches, encoders, and other pulse-producing devices to monitor production quantities or machine activity.
Applications can include packaging lines, conveyors, material handling, batching systems, filling equipment, assembly machinery, production equipment, cut-to-length processes, and machine-cycle monitoring.
Find the Right 72mm Counter
Selecting the right 72mm industrial counter depends on the required count range, number of presets, maximum pulse frequency, input signal, count direction, output configuration, batch or totalizing requirements, display behavior, memory needs, supply voltage, and whether timer functions are also required.
Explore the ATC 354C, 356C, 366C, 376B, and 385A Series above to compare predetermining, high-speed, computing, preset, batch, totalizing, and timer/counter capabilities for industrial automation and machine control.
72mm Counter FAQs
What is a 72mm industrial counter?
A 72mm industrial counter is a panel-mounted control that counts electrical pulses or events and displays or responds to the accumulated value. Depending on the model, it may provide presets, relay outputs, totalizing, batch counting, count-up or count-down operation, or timer functions.
What 72mm counters does ATC offer?
ATC's current 72mm Counters collection includes the 354C Shawnee II High-Speed Counter, 356C Shawnee II Digital Counter, 366C Long-Ranger Computing Counter, 376B Series Digital Counter, and 385A Digital Timer / Counter with Memory.
What is a predetermining counter?
A predetermining counter compares an accumulated count to a value selected before or during the process. When the preset count is reached, the counter can operate an output according to its configured control sequence.
What does the 354C High-Speed Counter do?
The 354C is a predetermining industrial counter that accepts pulse inputs and operates an output when the selected count is reached. Depending on configuration, it can operate in single-cycle interval, delayed, or repeat-cycle pulse modes.
What output options are available on the 354C?
The 354C is available with a standard SPDT relay output or an optional solid-state switch module, depending on the selected configuration.
What count range does the 356C provide?
The 356C is available with a 1 to 9,999 count range or a configuration extending to 99,990 counts in 10-count increments.
How fast can the 356C count?
The 356C can accept pulse rates up to 4,000 counts per minute under the specified input conditions, with minimum input pulses as short as 1 millisecond.
Does the 356C reject contact bounce?
Yes. The 356C incorporates an anti-bounce circuit designed to prevent unwanted counts caused by compatible mechanical input contacts bouncing during switching.
What is the 366C Long-Ranger Computing Counter?
The 366C is a microcomputer-based predetermining counter with selectable counting ranges, programmable cycle-progress display behavior, contact-bounce and noise rejection, relay outputs, and plug-in 72mm construction.
Can the 366C display count up or count down?
Yes. The 366C display can be configured for UP & STOP, UP & GO, DOWN & STOP, or DOWN & GO operation.
What counting ranges does the 366C provide?
The 366C provides three switch-selectable ranges covering 1 to 999, 10 to 9,990, and approximately 100 to 99,900 counts.
What is the ATC 376B Digital Counter?
The 376B is a programmable digital counter available in single preset and dual preset versions. It supports preset counting, batch counting, totalizing, scaling, bidirectional counting, quadrature counting, and multiple input and output options.
What preset range does the 376B support?
The 376B supports programmable preset values from 1 to 999,999.
Can the 376B be used as a batch counter?
Yes. The dual preset 376B can be configured for batch counting in applications where individual events must be grouped into larger production or process quantities.
How fast can the 376B count?
The single preset 376B supports counting at frequencies up to 10 kHz in supported count-up configurations. Maximum count rate can depend on the selected operating mode.
Does the 376B provide totalizing?
Yes. Both single preset and dual preset versions include an internal totalizing counter that can accumulate counts across multiple cycles.
What input types does the 376B support?
The 376B supports sinking, sourcing, and TTL-compatible count inputs. Input compatibility should be confirmed with the sensor or pulse source used in the application.
What output options does the 376B provide?
The 376B is available with electromechanical relay outputs or NPN current-sinking transistor outputs, depending on the selected model.
What does the 385A Timer / Counter do?
The 385A combines a programmable repeat-cycle timer and digital counter in one control. It provides multiple presets, an internal cycle totalizer, EEPROM memory, dual displays, relay outputs, and selectable timing or counting ranges.
What counting range does the 385A provide?
In counter mode, the 385A provides two selectable counting ranges covering an overall span from 1 to 99,900 counts.
Does the 385A retain settings when power is removed?
Yes. The 385A uses EEPROM memory to retain programmed information without requiring continuous power.
Are ATC 72mm counters plug-in devices?
Several models use plug-in construction, including the 354C, 356C, 366C, 376B, and 385A families. Mounting and socket requirements should be confirmed for the exact model and existing panel installation.
Where are industrial counters used?
Industrial counters can be used in packaging equipment, conveyors, material handling, batching systems, production machinery, cut-to-length equipment, assembly systems, machine-cycle monitoring, and other applications requiring events or products to be counted.
Can ATC counters work with sensors?
Yes, when the sensor output is electrically compatible with the selected counter input. Photoelectric sensors, proximity sensors, encoders, switches, and other pulse-producing devices can be used in appropriate counting applications.
How do I choose the right ATC 72mm counter?
Consider the required count range, number of presets, pulse frequency, count direction, sensor or input type, relay or transistor output, batch and totalizing requirements, display behavior, memory, supply voltage, mounting requirements, and whether timer functionality is also needed.