Danfoss 120Z0585 Module

The Danfoss 120Z0585 Electrical Module is a critical motor protection module engineered for HVACR refrigeration compressors. Operating on a universal 110/240V supply voltage, this electronic component is essential for safeguarding large-scale scroll compressors against terminal failures. As a direct replacement for the DEP101B protection module, it integrates seamlessly with Danfoss Performer compressors, including those in the SH, SM, and SZ series ranging from 175 to 600. The unit utilizes PTC thermistor monitoring to detect internal winding temperatures, effectively acting as a fail-safe to prevent burnout during phase loss or locked rotor conditions. For commercial contractors, this module provides the necessary logic to monitor up to nine sensors in series, ensuring high-reliability operation across an ambient temperature range of -35°C to 70°C. Its compact, screw-mounted or clamped design allows for rapid field installation, while the 5A rated relay ensures positive control circuit interruption during critical thermal events.

Key Benefits:

• Universal Voltage Compatibility: Operates efficiently across 110/240V electrical systems at 50/60 Hz without additional transformers.
• Advanced Thermal Sensing: Incorporates PTC sensor inputs to provide precise temperature monitoring for internal motor windings.
• Comprehensive Fault Logic: Detects and responds to phase loss and overtemperature conditions with a built-in 5-minute time delay for system stabilization.
• Broad Compressor Compatibility: Engineered specifically for high-capacity Danfoss scroll compressors such as the SH240, SZ240, and SM185 models.
• Industrial Durability: Rated for severe duty with CE and UL certifications, maintaining performance in extreme ambient cooling environments.

Common Questions:

How do I troubleshoot a blinking LED on the Danfoss 120Z0585?
The integrated LED uses specific blink codes to signal faults. A standard blink often indicates a PTC overheat or a phase loss error. Verify the resistance of the thermistor circuit (trip point typically at 4.50k?) and check for 200V-575V 3-phase supply stability if phase monitoring is enabled.

Can this module replace the older 120Z0584 version?
The 120Z0585 is the standard 110/240V variant (DEP101B), whereas the 120Z0584 is the 24V AC version (DEP101A). Always ensure the control circuit voltage matches the module rating before swapping models to avoid damaging the internal electronics.

What is the proper installation torque for the mounting terminals?
To ensure a secure electrical connection and prevent vibration-related loosening in industrial HVAC cabinets, mounting bolts should be torqued between 0.5 to 2 Nm.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.