RKC FB900 Digital Process and Temperature Controller
A configurable 1/4 DIN controller with fast sampling, flexible I/O and optional controller-to-controller communication.
Product Overview
FB900 is the 96 × 96 mm member of the RKC FB digital controller series. It is intended for process and temperature loops requiring configurable inputs, control outputs, event functions and communication options.
The base name does not define the ordered hardware. Input, control action, output, alarm, communication and supply fields must be read from the complete model code.
Performance
- The FB series combines precision measurement with a fast control cycle for responsive loop behavior.
- The configured output and tuning strategy determine how that measurement performance is applied to the process.
- The plug-in structure helps separate panel wiring from the controller body during service.
Technical Details
| Manufacturer | RKC Instrument |
|---|---|
| Model Family | FB900 |
| Product Class | Digital process / temperature controller |
| Panel Size | 96 × 96 mm, 1/4 DIN |
| Measurement Accuracy | ±0.1% of displayed value |
| Sampling Time | 0.1 second |
| Communication Choices | RS-485, RS-422A or RS-232C, by order code |
| Supply Choices | 100 to 240 V AC, 24 V AC or 24 V DC, by order code |
| Selection Basis | Complete configured model code |
System Integration
- Configured process sensor
- Ordered control output
- Optional serial communication network
Applications
- Industrial ovens and furnaces
- Extrusion and molding equipment
- Process skids and thermal systems
FAQ
Is FB900 a complete order code?
No. The full configured code is required to define input, outputs, alarms, communication and power supply.
Can one FB900 replace another based only on panel size?
No. Two units can share the same front size while having different terminal functions and internal options.
What should be backed up before replacing FB900?
Record all parameters, input range, control action, alarm logic, output assignments and communication settings.
When does FB900 controller-to-controller communication matter?
It matters when the process uses coordinated warm-up, ratio, cascade or group run/stop functions.
What commissioning checks are important for FB900?
Confirm sensor polarity, scaling, safe output direction, alarm action, tuning response and serial communications.
What information should accompany an FB900 enquiry?
Send the full side-label code, terminal photographs, supply, sensor, output load, alarm requirements and network settings.
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