The CML20.1-NP-120-NA-NNNN-NW is a Compact Module L20, specifically a single-axis servo controller (drive) designed for mounting on a DIN rail. It is used to control and supply power to a connected servo motor.
Part Number Breakdown (CML20.1-NP-120-NA-NNNN-NW)
Here’s what each segment typically signifies:
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CML20.1: Compact Module L20. Version 1. The base model.
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NP: Network Performance variant. This indicates a higher-performance unit with additional features for networked multi-axis systems, such as a second real-time communication port (X2) for daisy-chaining drives.
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120: Output current rating. This drive is rated for a continuous output current of 20A and a peak current of 40A (common for the 120 code: 20A RMS / 40A peak).
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NA: North America market version. This designates specific regional approvals (like UL/cUL) and default mains voltage compatibility.
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NNNN: Placeholder for specific hardware/software options (e.g., specific firmware, encoder interfaces). “NNNN” often indicates a standard or default configuration.
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NW: No Weighting function module. This option slot is empty. Other letters here could indicate integrated safety functions (e.g., STO – Safe Torque Off) or other optional plug-in modules.
Key Specifications & Features
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Manufacturer: Bosch Rexroth (under the IndraDrive product line).
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Product Line: IndraControl L20
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Type: Single-axis, digital servo drive/amplifier.
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Supply Voltage: 24 VDC for the control electronics (as indicated in your query). The main power for the motor (DC bus) is supplied separately, typically from a centralized power supply module (e.g., a CMR/CPM module) with voltages like 400-480VAC or 600VDC.
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Output Power: Suitable for servo motors with power ratings typically in the range of several kilowatts (exact kW depends on motor voltage). The 20A continuous current is the key driver sizing parameter.
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Control Technology: Uses Rexroth’s IndraDrive technology for precise control of torque, speed, and position.
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Communication: Designed for real-time fieldbus systems. It natively supports SERCOS III (via the X1 and, on the NP variant, X2 ports) for high-speed, deterministic communication with a motion controller (e.g., an IndraControl PLC). It can also support other protocols like PROFINET, EtherNet/IP, or POWERLINK with appropriate plug-in communication modules (e.g., a CM-ES module).
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Cooling: Typically fan-cooled.
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Mounting: DIN rail mountable (TS35).
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Software Configuration: Programmed and configured using Rexroth’s IndraWorks engineering software suite.
Typical Application
This drive is a core component in industrial automation systems requiring precise motion control, such as:
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Packaging machines
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Printing presses
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Machine tools
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Material handling robots
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Assembly and test systems
R911306455-105
This is the internal article number or ordering code. The suffix -105 often indicates a specific version or revision (e.g., hardware revision, regional variant).
