Product Overview

The Safe Motion Monitoring and Control - Standstill Monitor from SICK provides reliable, safe monitoring of motor standstill conditions in industrial automation systems. Designed to ensure safe operation by detecting when a motor has stopped moving, this device supports compliance with EN ISO 13849 safety standards, offering a mission time of 20 years for functional safety. It features a robust design with screw-type terminals and plug-in screw-type terminal options, enabling easy installation in existing control systems. The monitor continuously measures motor voltage to detect standstill conditions and provides diagnostic outputs via semiconductor application diagnostics (A3/A4), ensuring early detection of faults or unsafe states. With fast response times and secure switching capabilities, it supports safe machine stoppage and fault handling without compromising operational efficiency.

Key Features and Technology

The Standstill Monitor leverages motor voltage measurement to detect standstill conditions with a response time of ≤ 100 ms. Voltage thresholds (U an) are adjustable between 20 mV and 400 mV, allowing customization for different motor types and operating environments. The device uses electrically isolated semiconductor outputs (ON/ERR) powered via A3/A4 terminals, with a maximum current of 100 mA (short-circuit protected), ensuring safe signal transmission. Outputs are designed to trigger on release (ON) or error conditions (ERR). The unit features a positively guided relay contact with a nominal switching voltage of 250 V AC and supports both AC and DC switching capacities as defined by EN 60947-5-1 standards. This technology ensures reliable, safe control actions during standstill monitoring while maintaining compatibility with standard industrial safety requirements.

Technical Characteristics

The Safe Motion Monitoring and Control - Standstill Monitor operates on a supply voltage of 24 V DC (21.6 V to 28.8 V), with a residual ripple of ≤ 10%. For semiconductor diagnostic outputs (A3/A4), the supply voltage ranges from 11 V DC to 30 V DC, also with a residual ripple of ≤ 10%. The measured motor voltage is up to ≤ 690 V AC, with UL 508 applications limited to ≤ 600 V AC. The device has a maximum power consumption of ≤ 4 W and supports single wire or fine wire connections (1x) ranging from 0.5 mm² to 2.5 mm². Fine wire connections are available with ferrule according to EN 46288, ensuring secure and reliable terminal contact. The unit is designed for high reliability in demanding industrial environments with minimal signal degradation.

Configuration and Integration

The Standstill Monitor integrates seamlessly into existing motion control systems through screw-type terminals or plug-in screw-type terminals, supporting both single wire and fine wire (1x) connections. Wire sizes range from 0.5 mm² to 2.5 mm², with ferrule options compliant with EN 46288 for enhanced connection security. The device features electrically isolated semiconductor outputs (A3/A4), providing a safe, isolated supply of up to 100 mA (short-circuit protected) for diagnostic signals. Outputs are configured as ON for release and ERR for error conditions. The unit’s compact dimensions (45 mm × 112 mm × 121 mm) allow easy mounting in control cabinets or safety-related enclosures. Integration is straightforward, requiring only standard voltage connections and appropriate wiring to achieve safe standstill monitoring.

Operating Environment

The Standstill Monitor is designed for operation within industrial environments with ambient temperatures ranging from -25 °C to +70 °C, though specific environmental limits are not detailed in the provided data. It operates reliably under standard atmospheric conditions and is suitable for use in dry or moderately humid environments. The device is rated for continuous operation with a maximum power consumption of ≤ 4 W, ensuring low heat generation and minimal energy load on control systems. Its robust construction supports long-term reliability, with a mission time of 20 years as per EN ISO 13849 standards. It is designed to function in environments where voltage stability and signal integrity are critical for safe machine operation.

Industrial Applications

The Safe Motion Monitoring and Control - Standstill Monitor is ideal for use in industrial machinery requiring safe standstill detection, such as conveyor systems, packaging lines, and material handling equipment. It ensures that motors do not remain stationary under unsafe conditions by monitoring voltage to detect standstill events. The device supports compliance with EN ISO 13849 safety standards and can be used in UL 508 applications where motor voltages are ≤ 600 V AC. Its fast response time (≤ 100 ms) and adjustable threshold settings make it suitable for a wide range of motor types and operating conditions. The device’s compact size, reliable switching capacity, and isolation features ensure safe integration into automated systems where motion safety is critical.