The Basler Electric CEM-2020 is a high-performance contactor expansion module designed to enhance motor control system capabilities in demanding industrial environments. As part of Basler’s CEM-2000 series, this module provides seamless integration with existing contactor systems while adding advanced monitoring and protection functions. The CEM-2020 features real-time current sensing (0.5-50A range) and integrated thermal overload protection with Class 10 trip characteristics, making it ideal for mission-critical motor control applications.
Engineered for reliability, the Basler Electric CEM-2020 utilizes military-grade components that withstand voltage transients up to 6kV and operating temperatures from -40°C to +85°C. Its compact DIN-rail design (only 22.5mm width) allows for high-density installations in control panels. The module’s patented “Smart Link” technology enables automatic configuration when connected to Basler CEM-compatible contactors, reducing commissioning time by up to 70% compared to conventional expansion modules.
Technical Specifications
Product Model | CEM-2020
Manufacturer | Basler Electric
Product Type | Contactor Expansion Module
Rated Voltage | 24-600V AC/DC (universal)
Current Sensing Range | 0.5-50A RMS (±1% accuracy)
Trip Class | Class 10 (adjustable)
Communication Interface | RS-485 Modbus RTU
Isolation Voltage | 4kV RMS (input to output)
Surge Protection | 6kV (1.2/50μs waveform)
Operating Temperature | -40°C to +85°C
Storage Temperature | -50°C to +100°C
Humidity Range | 5-95% non-condensing
Dimensions | 90×22.5×65mm (W×H×D)
Weight | 120g
Mounting | DIN-rail (35mm)
Certifications | UL 508, CE, cULus
Key Features and Advantages:
The CEM-2020 introduces “Adaptive Load Monitoring” that automatically adjusts protection thresholds based on historical operating patterns, reducing nuisance trips by up to 90%. Its galvanically isolated RS-485 port supports daisy-chaining up to 32 modules on a single network, with built-in termination resistors and surge protection. The module’s solid-state design eliminates mechanical wear, delivering over 100,000 operations without maintenance.
Advanced diagnostics: The Basler Electric CEM-2020 provides real-time monitoring of contactor health through parameters like contact erosion (estimated via resistance measurement) and coil performance. Its “Black Box” function records the last 10 trip events with timestamp and pre-fault conditions for root cause analysis. The module’s universal power supply accepts both AC and DC inputs from 24-600V without external converters, simplifying inventory management.
Application Fields:
In water treatment plants, the CEM-2020 monitors pump contactors for early detection of phase imbalance and mechanical binding, preventing catastrophic motor failures. Manufacturing lines utilize its fast trip response (≤10ms) to protect sensitive automation equipment from short-circuit events. The module’s wide temperature range makes it particularly suitable for outdoor applications like mining conveyors and oilfield pumpjacks.
The Basler Electric CEM-2020 is specified for HVAC systems in high-rise buildings where its compact size allows installation in space-constrained electrical rooms. Data centers deploy these modules for critical cooling system monitoring, leveraging the Modbus interface for integration with BMS systems. The product’s 6kV surge immunity ensures reliable operation in areas prone to lightning strikes, such as wind farms and telecommunications sites.
Related Products:
- CEM-2010 – Basic version without communication
- CEM-2030 – Advanced model with Ethernet/IP
- BC-4500 – Compatible motor contactor
- PME-300 – Power monitoring enclosure
- MCM-100 – Motor control module
Installation and Maintenance:
Installation preparation: The CEM-2020 requires proper isolation of power circuits before connection. Verify compatible contactor models using Basler’s compatibility chart (CEM-CG-2025). Use 1.5mm² minimum wire gauge for current sensing inputs and maintain 10mm clearance from high-voltage conductors.
Maintenance recommendations: Perform annual verification of current calibration using certified test equipment. Clean ventilation slots every 24 months in dusty environments using low-pressure air (≤1 bar). Replace modules showing >5% deviation in current measurement accuracy or visible damage to housing. Always download event logs before module replacement.
Product Assurance:
Basler Electric provides a 12-month warranty for the CEM-2020, covering all electronic components and mechanical parts.
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