VIOX FCT18-CR Bistable Timer Relay with Control Signal On
The VIOX FCT18-CR Bistable Relay offers precise ON/OFF switching controlled by a rising edge signal. Features NPN/PNP control, 1/2 SPDT contacts, DIN rail mount, and AC/DC 12-240V. Ideal for industrial automation, building management, and process control requiring maintained states
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Product Overview
The VIOX FCT18-CR is a high-performance bistable relay designed for precise ON-OFF switching with rising edge triggering capability. Engineered for industrial automation, building management systems, and process control applications, this advanced relay provides reliable operation with excellent anti-interference properties, making it the ideal choice for environments where signal integrity is paramount.
Available in both single contact (FCT18-CR1) and dual contact (FCT18-CR2) configurations, the FCT18-CR offers exceptional versatility for various control needs while maintaining compact dimensions suitable for DIN rail mounting. With support for both NPN and PNP control signals, this bistable relay seamlessly integrates into existing control systems without requiring significant modifications to your setup.
Key Features and Benefits
- Wide Power Supply Range: Operates reliably from 12 to 240 VAC/DC, providing flexibility across various installation environments
- User-Friendly Setup: Easy installation with clear wiring diagrams printed directly on the product housing
- Superior Noise Immunity: Built-in anti-interference capability ensures stable operation in electrically noisy industrial environments
- Visual Status Indicators: Integrated green LED for supply indication and red LED for relay status monitoring
- Compact Form Factor: Space-saving design with dimensions of 90mm×18mm×64mm fits easily into control panels
- Multiple Signal Compatibility: Available with NPN or PNP control signal options for maximum system integration flexibility
- Extended Operating Temperature Range: Functions reliably from -20°C to +60°C (-40°F to +85°F)
- High Current Capacity: Handles up to 16A per contact for demanding applications
Understanding Timing Function
The FCT18-CR features a specialized ON-OFF switching mechanism with rising edge triggering. This timing function enables precise control over circuit operation:
| Signal | Function |
|---|---|
| Un (Input Voltage) | Maintains continuous power to the relay throughout operation |
| S (Control Signal) | Triggers relay state changes on rising edges |
| R (Relay Output) | Changes state according to control signal pattern |
The bistable operation ensures that each rising edge of the control signal toggles the relay state, making the FCT18-CR ideal for applications requiring maintained states with minimal control signals. This functionality is particularly valuable in remote control systems, lighting controls, and sequential automation processes.
Model Selection Guide
The FCT18-CR follows a structured model numbering system to help you identify the exact configuration required for your application:
FCT18-CR _ _ _ _
1. Function
2. Type of output
3. Supply voltage
4. Control signal
| 1. Function | |
|---|---|
| CR | ON-OFF Switching |
| 2. Type of output | |
| 1 | 1CO contact |
| 2 | 2CO contacts |
| 3. Supply voltage | |
| A | AC230V |
| D | DC24V |
| W | AC/DC12-240V |
| 4. Control signal | |
| N | NPN |
| P | PNP |
Technical Specifications
| Parameter | FCT18-CR1 | FCT18-CR2 |
|---|---|---|
| Input Terminal | A1-A2 | |
| Voltage range | AC 230V / DC24V / AC/DC 12-240V | |
| Power consumption | AC 3.5VA/ DC 2.0W | |
| Voltage tolerance | -15%~+10% | |
| Supply indication | Green LED | |
| Relay indication | Red LED | |
| Temperature coefficient | 0.05%/°C, at=20°C (0.05%/°F, ≈68°F) | |
| Output contact | 1*SPDT | 2*SPDT |
| Rated current | 1*16A | 2*16A |
| Mechanical life | 1*107 | |
| Electrical life | 1*105 | |
| Ambient Temperature | -20 … +60°C / -40 … +85°C | |
| Mounting | DIN rail EN/IEC 60715 | |
| IP Rating | IP20 | |
| Stripping length | 7mm (0.28in) | |
| Installed altitude | ≤2200m | |
| Pollution level | 2 | |
| Max cable size | AWG13-20 0.4N-m | |
| Dimension | 90mm*18mm*64mm | |
| Weight | about 90g | |
| Standards | GB/T 14048.5, IEC60947-5-1, EN6812-1 | |
Wiring Guidelines
The FCT18-CR provides flexible wiring options supporting both NPN and PNP control signal configurations:
NPN Configuration
Connect as follows:
- OA1 (DC+ / AC L) to terminal 12, 14, 22, 24 (output)
- S (Control Signal) to appropriate control circuit
- Un (Power Supply) to relay input
- OA2 (DC- / AC N) to terminal 11, 21 (output)
PNP Configuration
Connect as follows:
- OA1 (DC+ / AC L) to terminal 12, 14, 22, 24 (output)
- S (Control Signal) to appropriate control circuit
- Un (Power Supply) to relay input
- OA2 (DC- / AC N) to terminal 11, 21 (output)
The well-labeled terminal connections ensure straightforward installation in both new systems and retrofit applications.
Dimensions and Mounting
The FCT18-CR features compact dimensions of 90mm×18mm×64mm, optimized for standard DIN rail mounting according to EN/IEC 60715. This standardized mounting approach ensures:
- Simple installation in control cabinets and panels
- Efficient use of panel space with its slim 18mm width
- Reliable mechanical connection to standard DIN rails
- Easy removal for maintenance or replacement when needed
With a stripping length of 7mm (0.28in) and support for wire sizes up to AWG13-20, the FCT18-CR accommodates a wide range of connection requirements while maintaining secure electrical contact.
Applications
The versatile FCT18-CR bistable relay with control signal on capability is ideal for numerous applications across various industries:
Industrial Automation
- Machine control systems requiring maintained states
- Process control with toggle functionality
- Sequential operations triggered by pulse signals
- Motor control start/stop circuits
Building Management
- Lighting control systems with toggle functionality
- HVAC equipment operation
- Access control systems
- Energy management systems with ON/OFF cycling
Power Distribution
- Remote switching of electrical loads
- Power factor correction equipment
- Generator control systems
- UPS and emergency power switching
Renewable Energy
- Solar system controls
- Wind turbine auxiliary systems
- Battery management systems
- Grid-tie control interfaces
Why Choose VIOX FCT18-CR?
The FCT18-CR stands out in the market due to several key advantages:
Operational Excellence
- Exceptional Reliability: With a mechanical life of 10 million operations and electrical life of 100,000 cycles, the FCT18-CR delivers long-term dependable performance
- High Interference Immunity: Built-in protection against electrical noise ensures consistent operation even in challenging industrial environments
- Wide Operating Range: Accommodates power supply variations from 12V to 240V AC/DC, eliminating the need for separate units for different voltage environments
Installation Advantages
- Straightforward Wiring: Clearly labeled connections and on-device wiring diagrams reduce installation time and errors
- Compact Footprint: The slim 18mm width conserves valuable DIN rail space in control panels
- Visual Indicators: Integrated LEDs provide instant status information, simplifying troubleshooting and maintenance
Compliance and Quality
- International Standards: Manufactured to meet GB/T 14048.5, IEC60947-5-1, and EN6812-1 standards
- Robust Construction: Durable housing with IP20 protection ensures long-term reliability in industrial settings
- Temperature Stability: Minimal drift (0.05%/°C) ensures consistent timing across varying ambient conditions
Installation Best Practices
To ensure optimal performance and longevity of your FCT18-CR bistable relay:
- Proper Mounting: Install on standard 35mm DIN rail in a clean, dry environment with adequate ventilation
- Voltage Verification: Confirm that your power supply matches the relay’s rated input voltage range
- Signal Compatibility: Verify that your control signal type (NPN or PNP) matches the relay model selected
- Wire Sizing: Use appropriate wire gauge (AWG13-20) for current requirements and ensure proper stripping length (7mm)
- Terminal Torque: Apply correct torque (0.4N-m) when securing wires to prevent connection issues
- Environmental Conditions: Ensure installation location stays within the specified temperature range (-20°C to +60°C)
- Interference Protection: Route control wiring away from high-current or high-frequency sources to maximize noise immunity
Maintenance and Troubleshooting
The FCT18-CR is designed for minimal maintenance, but following these tips can help ensure continued reliable operation:
Routine Inspection
- Periodically check terminal connections for tightness
- Verify that LED indicators are functioning correctly
- Inspect for dust accumulation and clean as needed
- Confirm proper operation with test cycles if accessible
Common Troubleshooting
| Issue | Possible Cause | Recommended Action |
|---|---|---|
| No power indication (green LED off) | Supply voltage issue | Check input voltage at A1-A2 terminals |
| Relay doesn’t respond to control signal | Incorrect signal type or connection | Verify NPN/PNP configuration matches model |
| Intermittent operation | Signal interference or loose connection | Check wiring integrity and route control cables away from noise sources |
| Relay switches but load doesn’t activate | Output connection issue | Verify output terminal connections and load functionality |
Conclusion
The VIOX FCT18-CR bistable relay with control signal on represents a perfect balance of advanced functionality, reliability, and ease of use. With its versatile voltage range, NPN/PNP control signal compatibility, and robust construction, this relay delivers exceptional performance across diverse industrial and building automation applications.
Whether you’re designing a new control system or upgrading existing equipment, the FCT18-CR provides the precision switching control and maintainability that modern automation demands. Backed by compliance with international standards and engineered for long-term reliability, the FCT18-CR is the ideal choice for professionals who value performance, quality, and system integrity.
For more information on the FCT18-CR or to discuss your specific application requirements, contact our technical support team today.
