Overview

The document presents the SM1A series of fully digital programmable integrated servomotors and drives designed for advanced motion control applications. These 50-pole motors feature multi-axis capabilities, fieldbus communication, and are optimized for cost-effective restraint while delivering high performance.

Key Features

• Multiple control modes including Step & Direction, Analog Speed Reference, Velocity, and advanced positioning modes (homing, relative, absolute, target).
• Onboard safety features: watchdog functionality, fault monitoring and handling, error buffering, and separate power supplies for logic and power.
• Motor characteristics: low vibration, low mechanical noise, no resonance, low heat generation, high reliability, IP65 protection, and AC power supply.
• Power supply options: dual supply (24 VDC logic + 18-48 VAC power) or single 18-48 VAC supply.
• Power stage: H-bridge bipolar chopper operating at 40 kHz.
• Current range: 0 to 4.2 ARMS (peak 6.0 A).
• Communication interfaces: RS232, RS485, CANbus with optoisolated control buses.
• Inputs/Outputs: 4 digital optocoupled inputs, 2 digital optocoupled outputs (100 mA), and 1 analog input (potentiometer or ±10 Vdc).
• Feedback: incremental encoder with 400 pulses per turn plus zero signal.
• Step resolution: from 1 to 128 microsteps.
• Safety protections include over/under-voltage, overcurrent, overtemperature, and winding faults (open/closed phases).
• Operating temperature range: 0°C to 50°C; storage up to 55°C.

Control Modes and Functionalities

• Step & Direction Control Mode.
• Analog Speed Reference Control Mode.
• Velocity Control Mode.
• Wide range of positioning modes including homing and target positioning.
• CAM Mode for advanced cam profile programming (available in c1x90 versions).
• Electric Gear function with programmable gear ratio to track external master references from fieldbus or incremental encoder.
• High-speed I/O triggered motor start/stop for event synchronization, suitable for applications like labeling, nick-finder, and on-the-fly cutting.
• Multi-axis synchronization capability with on-the-fly mode switching and electric gear enable/disable.
• Motor stall detection and target position tracking via encoder feedback.

Stand-Alone Mode and Programmability

The SM1A series supports a stand-alone mode with user programmability via the integrated eePLC module. This combines PLC, motion, and process control in one device. The eePLC Studio PC interface allows easy and fast custom programming for machine or process automation.

• Atomic Handler feature enables access to all device functionalities and synchronization of motion with process events.
• Built-in real-time process modules for specialized applications such as labeling, CAM, wire processing, and user-defined processes.

Models and Mechanical Data

• Four torque classes: 1.10 Nm, 1.65 Nm, 2.10 Nm, and 3.30 Nm (±10%).
• Motor lengths range from 49 mm to 90 mm, weights from 1.45 kg to 2.25 kg depending on torque rating.
• Phase resistance and inductance vary by model, with detent torque and rotor inertia specified for each.

Communication and Software Options

• Supported protocols: CANopen, Modbus RTU (via RS232/RS485), Profibus, DeviceNet.
• Software starter kits available for different control modes, including USB/CAN and USB/Serial converters with demo software and user manuals.
• Proprietary PC software tools for configuration and supervision: SL_Modbus, SL_CAN, SL_eePLC.
• Real-time process software modules for labeling, CAM, wire processing, and custom applications.

Safety and Reliability

• Protection class IP65 ensures suitability for harsh industrial environments.
• Multiple safety protections guard against electrical faults and thermal issues.
• Separate power supplies for logic and power enhance reliability and fault isolation.

Performance Charts

The document includes torque and dynamic performance charts demonstrating motor capabilities at 48 VAC and 4.2 A current under full-step operation, highlighting the torque output across different motor models.

Summary

The SM1A integrated servomotor series offers a versatile, reliable, and programmable solution for advanced motion control in industrial automation. Its multi-mode control, extensive safety features, and flexible communication options make it suitable for complex multi-axis systems requiring precise synchronization and real-time process integration.