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ABB SENSYCAL FCU400-IR – Contactless Temperature Monitoring System
Product Overview
The ABB SENSYCAL FCU400-IR is a complete system for contactless temperature monitoring, specifically engineered for critical electrical assets in medium-voltage switchgear. It continuously monitors hotspots on live components such as busbars and circuit breakers, detecting temperature rises caused by loose connections or oxidation before they escalate into equipment failure or safety incidents. The system comprises infrared pyrometers, a central measurement computer, and optional Pt100 ambient temperature sensors, all housed in a robust metal enclosure-12. Its core purpose is to eliminate the need for costly, time-consuming routine contact checks, offering a reliable, always-on solution for plant safety and operational continuity-1. The FCU400-IR is a key component in ABB’s SensyCal product family, known for precision and durability in demanding industrial environments-.
Technical Specifications — FCU400-IR
| Parameter | Value |
|---|---|
| Product Model | FCU400-IR |
| Manufacturer | ABB |
| Product Type | Contactless Temperature Monitoring System |
| Application | Medium-voltage switchgear, busbars, circuit breakers |
| Max Monitoring Points | Up to 12 hotspots per system-2 |
| Power Supply | 24 V DC ±5%-13 |
| Power Consumption | ≤10 VA-13 |
| Operating Temp (Computing Unit) | -5°C to +55°C-13 |
| Operating Temp (Sensor) | -20°C to +75°C-13-12 |
| Protection Rating (Computing Unit) | IP40-13 |
| Protection Rating (Sensor) | IP65 (NEMA-4)-13-12 |
| Sensor Spectral Response | 8 µm to 14 µm-12 |
| Measurement Range | -20°C to +350°C (software adjustable)-12 |
| Accuracy | ±1.5°C or ±1.5% of reading (whichever is greater)-12-13 |
| Optical Resolution | 15:1-2 |
| System Response Time | <1 second-1-13 |
| Binary Outputs | 3 (pre-alarm, alarm, device error)-1 |
| Communication | MODBUS RS485 (optional), M-Bus, IRDA, ZVEI optical interfaces-2-13 |
| Analog Output | 0/4-20 mA (optional)-2-13 |
| Display | Multi-line backlit LCD-2 |
| Mounting | Panel mounting or 35 mm DIN rail-13 |
ABB SENSYCAL FCU400-IR
Key Features and Benefits — FCU400-IR
- Continuous, Non-Contact Monitoring – The FCU400-IR uses infrared technology to measure the temperature of up to 12 critical contact points in real time without physical contact with live components-2. This eliminates the risks associated with manual inspections and enables immediate detection of temperature anomalies-2.
- Early Warning & Fast Response – Freely adjustable pre-alarm and main alarm thresholds trigger binary outputs (pre-alarm, alarm, device error)-1-2. The system responds in under one second, allowing for rapid intervention to prevent damage or unplanned downtime-1.
- Robust EMC Protection – The FCU400-IR features a full metal housing with comprehensive electromagnetic compatibility (EMV) shielding–1. This ensures reliable operation even in environments with significant electromagnetic interference, such as high-voltage switchgear-12.
- Integrated Data Logger – An on-board data logger with a real-time clock stores current, minimum, maximum, and mean temperature values for up to 200 periods-2-16. This historical data is invaluable for trend analysis, predictive maintenance, and post-event diagnostics-12.
- Flexible Outputs & Communication – The system offers three binary outputs as standard-1. Optional MODBUS (RS485) and analog (4-20 mA) outputs allow for seamless integration into PLC, DCS, or SCADA systems-2-13. M-Bus and optical interfaces (IRDA, ZVEI) provide additional configuration and data readout options-2.
- Modular & Upgradeable Design – The modular structure allows for easy expansion and field upgrades-12. The central unit and sensors are separate components, simplifying maintenance and replacement without system-wide disruption-13.
Related Models
FCU400-G – Universal measuring computer within the SensyCal 400 series, suitable for general industrial measurement and calculation tasks-.
FCU400-P – Flow computer designed for signal processing, high-precision ΔT measurement, and heat quantity calculations-.
FCU400-S – Steam, flow, and thermal power computer for industrial quantity measurements, heat balances, and fiscal metering applications-.
FCU200-T / FCU200-W – Heat quantity computers for determining industrial thermal balances in liquid heat supply systems-.
Installation and Maintenance — FCU400-IR
Installation of the FCU400-IR is straightforward and flexible. The central unit can be panel-mounted directly into a switchgear cabinet door, requiring a cutout of approximately 139 mm × 69 mm-13. Alternatively, it can be mounted on a standard 35 mm DIN rail-13. Infrared sensors are installed directly at the monitoring points, typically fixed using an M12×1 thread-13. Standard sensor cables are 10 meters long and can be extended up to 50 meters upon request-13.
Maintenance requirements are minimal. Because the system uses non-contact infrared sensors, routine checks of contact points are eliminated-2. There is no measuring system maintenance required-2. Periodic verification of sensor alignment and optical path cleanliness is recommended to ensure measurement accuracy. The system’s modular construction allows for quick sensor or module replacement without significant downtime-12.
