GE IC660HHM501

Description

Product Description

GE IC660HHM501 is a high-speed counter module designed for the GE Fanuc Series 90-30 PLC system. This module, part of the versatile Genius I/O block family, specializes in accurately counting high-frequency digital pulses from devices like encoders, proximity switches, and flow meters. The primary function of the GE IC660HHM501 is to offload complex, time-critical counting tasks from the main PLC CPU, ensuring precise measurement of speed, position, length, or totalized flow without burdening the central processor’s scan time. It provides a dedicated and reliable interface for critical process measurements that require speed and accuracy. Integrating the IC660HHM501 into a Series 90-30 rack enhances the system’s capability to handle demanding motion control and batching applications. For engineers working with legacy automation, the GE IC660HHM501 remains a key component for adding sophisticated counting functionality to a robust and proven PLC platform.

Product Parameters / Technical Specifications

• Manufacturer: GE Fanuc (now part of Emerson)
• Series: Series 90-30 PLC / Genius I/O System
• Functional Designation: High-Speed Counter Module
• Input Channels: Two independent high-speed counter channels.
• Input Types: Accepts digital pulse inputs from devices like incremental encoders (with A, B, and sometimes Z/Reset channels).
• Counting Speed: Capable of counting at very high frequencies, typically up to 100 kHz or more, depending on the specific model configuration.
• Counting Modes: Supports various modes including up/down counting, quadrature counting (for direction sensing), and pulse/direction.
• Outputs: May include dedicated high-speed discrete outputs for triggering actions at preset count values.
• Communication: Interfaces with the Series 90-30 CPU via the Genius bus or as a direct rack module, depending on the specific IC660 variant and bus interface used.
• Power Supply: Requires +5VDC power from the PLC rack or an external supply.

Advantages and Key Features

• Offloaded CPU Processing: By handling high-speed counting independently, it prevents the main PLC scan cycle from limiting measurement accuracy and frees up CPU resources for logic execution.
• High Accuracy & Speed: Engineered for precise counting of rapid pulse trains, making it suitable for applications involving rotating machinery or fast-moving products.
• Flexible Configuration: Offers multiple counting modes and presets that can be configured to suit a wide range of applications, from simple totalizing to complex position control.
• Genius Bus Compatibility: As part of the Genius distributed I/O system, it allows for remote placement away from the main PLC rack, reducing wiring costs for sensors in the field.
• Dual-Channel Design: The two independent counters allow a single GE IC660HHM501 module to monitor two separate processes or axes.
• Robust Legacy Support: The Series 90-30 platform and its modules like the IC660HHM501 are known for their durability and long-term reliability in industrial environments.

Application Cases in Industry

• Packaging & Conveying: Used to measure line speed, control cut-to-length operations for packaging material, and register the position of products on a conveyor.
• Material Handling: Counts pulses from motor encoders to control the precise positioning of lifts, hoists, and automated storage/retrieval systems (AS/RS).
• Flow Monitoring & Batching: Totalizes pulses from turbine flow meters or positive displacement flow transmitters for accurate batching and total flow recording in water/wastewater or chemical processes.
• Rotating Machinery Monitoring: Measures RPM or angular position of shafts, rollers, and turbines by counting pulses from a rotary encoder or magnetic pickup.
• Textile & Wire Production: Controls the length of material being wound or cut by counting pulses from a measuring wheel encoder.

Comparison with Competing Products

Selection Suggestions and Precautions

1. Verify Complete System Compatibility: Confirm that the GE IC660HHM501 is compatible with your specific Series 90-30 CPU model and rack type. Also, determine if it requires a separate Genius Bus Controller (GBC) module or if it is a direct-rack variant.
2. Match Sensor Specifications: Ensure the output signal type (voltage level, NPN/PNP sinking/sourcing) and frequency of your pulse-generating sensor (encoder, flow meter) are within the input specifications of the IC660HHM501.
3. Software and Configuration: You must have access to the appropriate legacy GE programming software (e.g., Proficy Machine Edition) and the correct configuration files (.PDB) to set up the module’s counting modes, presets, and scaling parameters.
4. Wiring and Noise Immunity: Use shielded, twisted-pair cables for all pulse signal connections and ensure proper grounding to prevent electrical noise from causing false counts, which is critical for the module’s accuracy.
5. Consider Legacy Status: The Series 90-30 platform is discontinued. When selecting the GE IC660HHM501, factor in the long-term support, availability of spares, and the potential benefits of migrating to a modern control system for new projects.
6. Sourcing from Reputable Suppliers: Purchase from suppliers who specialize in legacy GE components and can verify the functionality of the module, as new stock is scarce and most available units are refurbished.

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