Overview
The NK Technologies AT2-420-24L-FT is a medium-size solid-core AC current transducer engineered for industrial automation and process monitoring applications. This transducer converts AC current signals into a standard 4-20mA output, enabling seamless integration with PLC systems, data acquisition equipment, and analog input modules. The loop-powered design eliminates the need for a separate power supply, simplifying installation in panel-mounted and field-installed configurations.
Key Features
- Solid-Core Design: Top-mounted terminal configuration for easy installation and compact panel integration.
- Selectable Input Ranges: User-configurable full-scale input of 100A, 150A, or 200A reduces inventory requirements.
- 4-20mA Output: Industry-standard current loop output compatible with analog input cards and DCS systems.
- Loop-Powered: 5-40VDC supply voltage range eliminates external power source requirements.
- Fast Response Time: 300ms response for 90% step change ensures timely process feedback.
- Certified Reliability: UL/cUL and CE listings ensure compliance with industrial safety standards.
Technical Specifications
- Input Range: 100A, 150A, 200A (selectable)
- Output Signal: 4-20mA
- Output Limit: 32mA maximum
- Power Supply: 5-40VDC loop-powered
- Case Type: Solid-core, top-mounted terminals
- Response Time: 300ms (to 90% step change)
- Operating Temperature: -4°F to 122°F (-20°C to 50°C)
- Accuracy: 1.0% full scale
- Certifications: UL/cUL and CE listed
- Frequency Range: 50-60 Hz
Typical Applications
The AT2-420-24L-FT is widely used in motor control centers, industrial machinery monitoring, HVAC systems, and power distribution panels. It provides real-time AC current measurement for:
- Motor load monitoring and fault detection
- Energy management and demand-side management (DSM)
- Three-phase induction motor current balancing
- Equipment predictive maintenance and condition monitoring
- Feeder and branch circuit protection coordination
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix and ControlLogix 4-20mA analog input modules
- Siemens S7-1200, S7-1500, and S7-300 PLC systems with analog inputs
- Mitsubishi FX series and Q series PLC analog cards
- Omron CP/CJ series controllers with current input cards
- Industrial data acquisition systems with 4-20mA input capability
- SCADA and HMI systems requiring analog current feedback
- Conventional analog instrumentation and control systems
Replaces / Drop-In Replacement For
- NK Technologies AT2-420-24L-SP (split-core version)
- NK Technologies ATR2-420-24L-FT (true RMS version)
- Similar medium-range solid-core current transducers in the 100-200A class
Works With
- Studio 5000 Logix Designer (Allen-Bradley analog input configuration)
- TIA Portal (Siemens PLC analog input modules)
- GX Works3 and GX Developer (Mitsubishi current measurement programs)
- EtherNet/IP gateways with analog signal bridging
- PROFINET and MODBUS-enabled data aggregation systems
- 4-20mA loop current protocol and industry-standard instrumentation networks
