HEIDENHAIN CC6108 ID 662 637-02 ID 662 637-03 Signal Conditioner / Interface Unit
Parameter Name
Parameter Value
Product Model
HEIDENHAIN CC6108 ID 662 637-02 / ID 662 637-03
Manufacturer
HEIDENHAIN
Product Type
Signal Conditioner / Interface Unit for 1 Vpp Encoders
Input Signals
Differential sine/cosine signals (1 Vpp), plus reference mark signal (1 Vpp), from HEIDENHAIN encoders
Input Frequency
High bandwidth, supports high encoder speeds (typically up to several hundred kHz signal frequency)
Output Signals
Digital square-wave signals (A, B, R). ID 662 637-02: Likely TTL (5V) differential (RS422) outputs. ID 662 637-03: Likely HTL (push-pull, up to 30V) or a different voltage level output.
Interpolation
Built-in electronic interpolation (subdivision), typically fixed factors (e.g., 5x, 10x) or selectable via DIP switches
Supply Voltage
Typically 5 V DC for TTL versions, or a wider range (e.g., 8-30 V DC) for HTL versions
Signal Monitoring
Integrated monitoring for signal amplitude, frequency, and cable break; provides error output signal
Connection
Screw terminals or D-Sub connectors for both encoder input and system output
Operating Temperature
0°C to +55°C (standard industrial range)
Storage Temperature
-20°C to +85°C
Vibration/Shock Resistance
Designed for stable operation in machine tool environments
Housing
Compact, metal or robust plastic housing for DIN-rail mounting
The HEIDENHAIN CC6108 ID 662 637-02 and ID 662 637-03 are highly precise, modular signal conditioning and interface units from HEIDENHAIN’s renowned industrial measurement and control portfolio, specifically designed for their range of linear and angular encoders. These units, often referred to as signal converters or matching units, serve as the critical bridge between the analog sine/cosine signals (1 Vpp) generated by high-resolution HEIDENHAIN encoders (e.g., LIDA, LIP, or rotary encoders with 1 Vpp output) and the subsequent digital processing electronics, such as CNC controls, PLCs, or dedicated position controllers. The primary function of these modules is to receive the delicate, noise-sensitive 1 Vpp differential signals (Sin, Cos, and a reference marker signal), condition them by amplifying and shaping, and convert them into robust, noise-immune digital square-wave signals (TTL or HTL level, depending on model and configuration). This conversion is essential for achieving the full precision, high-speed counting, and reliable reference point detection that HEIDENHAIN encoders are famous for.
The core value of the HEIDENHAIN CC6108 series lies in its ability to maximize the performance of the connected encoder while providing installation flexibility and diagnostic capabilities. These units perform critical tasks like signal interpolation (subdivision), which multiplies the basic signal period to achieve higher resolution, and signal monitoring to detect errors such as signal loss, amplitude drop, or excessive cable length. The different IDnumbers (e.g., 662 637-02 vs -03) typically denote variations in output signal type (e.g., TTL vs HTL), supply voltage, or specific interpolation factor. For machine tool builders, robotics integrators, and precision automation engineers, deploying the correct HEIDENHAIN CC6108 interface unit ensures that the inherent accuracy and repeatability of the encoder are preserved throughout the signal chain, leading to improved machining quality, higher system reliability, and simplified troubleshooting in high-performance motion control systems.
Technical Specifications
Parameter Name
Parameter Value
Product Model
HEIDENHAIN CC6108 ID 662 637-02 / ID 662 637-03
Manufacturer
HEIDENHAIN
Product Type
Signal Conditioner / Interface Unit for 1 Vpp Encoders
Input Signals
Differential sine/cosine signals (1 Vpp), plus reference mark signal (1 Vpp), from HEIDENHAIN encoders
Input Frequency
High bandwidth, supports high encoder speeds (typically up to several hundred kHz signal frequency)
Output Signals
Digital square-wave signals (A, B, R). ID 662 637-02: Likely TTL (5V) differential (RS422) outputs. ID 662 637-03: Likely HTL (push-pull, up to 30V) or a different voltage level output.
Interpolation
Built-in electronic interpolation (subdivision), typically fixed factors (e.g., 5x, 10x) or selectable via DIP switches
Supply Voltage
Typically 5 V DC for TTL versions, or a wider range (e.g., 8-30 V DC) for HTL versions
Signal Monitoring
Integrated monitoring for signal amplitude, frequency, and cable break; provides error output signal
Connection
Screw terminals or D-Sub connectors for both encoder input and system output
Operating Temperature
0°C to +55°C (standard industrial range)
Storage Temperature
-20°C to +85°C
Vibration/Shock Resistance
Designed for stable operation in machine tool environments
Housing
Compact, metal or robust plastic housing for DIN-rail mounting
Key Features and Advantages
The HEIDENHAIN CC6108 series is defined by its precision signal conditioning and noise immunity. Its primary role is to convert the sinusoidal encoder signals into clean, sharp-edged digital pulses without introducing phase jitter or timing errors, which is paramount for maintaining positioning accuracy at high speeds. The built-in electronic interpolation multiplies the base resolution of the encoder, allowing the system to achieve finer position control without requiring a physically higher-line-count (and more expensive) encoder. For example, a 2048-line encoder with 5x interpolation yields a system resolution equivalent to 10240 lines per revolution.
CC422 ID359651-02
Robustness and diagnostic intelligence are critical for reliable operation in industrial settings. These units feature comprehensive signal monitoring circuits that continuously check the health of the incoming encoder signals. If the signal amplitude falls below a threshold (indicating a dirty scanning head, damaged cable, or excessive cable run), or if a signal is lost entirely, the module activates a dedicated error output. This allows the CNC or PLC to react immediately—e.g., by stopping the axis in a controlled manner—preventing scrap parts or machine damage. This proactive diagnostic capability is a key differentiator from simple amplifier modules.
Flexibility and ease of integration are central to their design. Available in different output formats (TTL/RS422 for control cabinet environments, HTL for longer cable runs and higher noise immunity in factory settings), the correct CC6108 variant can be selected to match the electrical interface of the downstream counter or controller. The compact, DIN-rail mountable design saves panel space and simplifies installation. Clear status LEDs provide immediate visual feedback on power, signal presence, and error states. By using the genuine HEIDENHAIN interface unit matched to the encoder, system integrators guarantee optimal signal integrity, ensuring that the full potential of the precision measurement system is realized, from the encoder scale to the control input.
Application Areas
The HEIDENHAIN CC6108 ID 662 637-02/03 is an essential component in any high-precision motion control system that utilizes HEIDENHAIN’s 1 Vpp analog encoders. Its most prominent application is in CNC machine tools—including machining centers, lathes, grinders, and EDM machines—for positioning feedback on linear axes (via linear scales like LIDA) and rotary axes (via rotary encoders). Here, the unit’s precision and reliability directly translate to part accuracy and surface finish quality.
In industrial robotics and automated assembly systems, these interface units are used with encoders on robot joints or on precision linear guides within the work cell to ensure accurate and repeatable positioning. Within semiconductor and electronics manufacturing equipment (such as wafer steppers, wire bonders, and pick-and-place machines), the extreme precision enabled by the CC6108‘s signal conditioning is non-negotiable for achieving micron-level alignment. Additionally, they are found in precision measurement and inspection machines (coordinate measuring machines — CMMs, optical comparators) and in printing and converting machinery where precise registration is critical. Essentially, wherever there is a need for the highest level of position feedback accuracy and integrity in a dynamic, electrically noisy industrial environment, the HEIDENHAIN CC6108 series provides the critical link.
Related Products
HEIDENHAIN Linear Encoders (e.g., LIDA 400 series, LIP 500 series): The 1 Vpp analog output linear scales that provide the input signal to the CC6108.
HEIDENHAIN Rotary Encoders (e.g., RCN, ROD 400 series): Analog sine/cosine rotary encoders that also connect to the CC6108.
HEIDENHAIN IK / IB 500 Counter/Interface Cards: Alternative interface solutions that may combine signal conditioning with counter functionality for direct connection to a PC or PLC.
HEIDENHAIN Cable Sets (e.g., 6-629 8xx-xx): Pre-manufactured, shielded cable assemblies designed for optimal signal transmission between the encoder and the CC6108 unit.
HEIDENHAIN EnDat 2.2 Interface Units: For interfacing with newer, fully digital EnDat 2.2 encoders, representing a different technology path.
TTL-to-USB or TTL-to-Ethernet Converters: Third-party devices that could further convert the CC6108‘s TTL output for connection to a PC-based data acquisition system.
PLC High-Speed Counter Modules (e.g., Siemens FM350, Allen-Bradley 1756-HSC): The downstream devices that receive the square-wave signals from the CC6108 for position counting.
DIN-rail Power Supply (e.g., 24V DC or 5V DC): The power source required to operate the CC6108 unit.
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