Overview
The Vorne Industries 77/256M-0AC-CT/RST-004DS is a precision LED digital counter designed for high-volume event counting and totalization in industrial control systems. This electronic counter from the established Vorne 77/256M series combines large, easy-to-read 3.3-inch LED characters with robust industrial reliability. The unit is discontinued but remains a popular replacement component in legacy manufacturing, packaging, and quality control systems where pulse counting is critical to operation.
Key Features
- 3.3-inch LED Display: Large, bright characters visible from a distance, ideal for shop-floor visibility
- EEPROM Memory: Retains the last count in the event of a power loss, without battery back-up
- Field-Programmable: DIP switch configuration on the main logic board determines scale factor settings
- Flexible Input Options: Sinking input with 10K pull-up resistor activated by contact closure or open collector NPN transistor
- Speed-Selectable: Choose between low speed (3,000 CPM) or high speed (100,000 CPM) via internal jumper
Technical Specifications
- Display Format: 4-digit configuration with 3.3-inch LED characters
- Memory: EEPROM (non-volatile, no battery required)
- Count Rate Options: Low speed 3,000 CPM or High speed 100,000 CPM
- Input Type: Sinking input (TTL/CMOS compatible)
- DIP Switch Configuration: Scale factor programming 0.0001 to 9999
- Decimal Point: Optional, field-selectable
- Manufacturing: Vorne Industries (USA)
Typical Applications
- Production line piece counting and event totalization
- Quality assurance and statistical process control
- Packaging machinery pulse counting
- Conveyor system event logging
- Assembly line cycle documentation
- Legacy equipment retrofit and replacement
Compatibility & Replacements
Compatible With
- Industrial PLC systems requiring external pulse counting
- Motion control and automation equipment using event triggers
- Systems with TTL/CMOS logic level inputs
- 24VDC industrial control circuits
Replaces / Drop-In Replacement For
- Vorne Industries 77/256M-0AC-00-4 (4-digit large electronic counter)
- Other Vorne 77/256M-0AC series counters with matching digit configuration
- Verify exact replacement compatibility with your control system before ordering
Works With
- Industrial relay logic and discrete control systems
- Programmable Logic Controllers (PLCs) with digital input modules
- Motion controllers with event counting capability
- Sensor arrays generating pulse outputs
