VIOX FCT18-Xd Asymmetrical On-Delay and Off-Delay Timer Relay With Control Signal

Product Overview

The VIOX FCT18-Xd is a versatile industrial-grade asymmetrical timer relay designed to provide precise ON-delay and OFF-delay timing control in a compact DIN rail mountable package. This sophisticated timing device offers exceptional flexibility with adjustable time ranges from 0.1 seconds to 100 days, making it suitable for a wide variety of industrial automation, process control, and equipment protection applications.

Engineered with dual timing functions (T1 and T2), the FCT18-Xd allows you to implement both rising edge (ON-delay) and falling edge (OFF-delay) timing sequences in a single device. The unit’s precision timing control, combined with its robust design and versatile power supply options, makes it an ideal solution for systems requiring accurate time-based switching operations.

Key Features and Benefits

• Dual Timing Functionality: Integrates both ON-delay and OFF-delay timing functions in a single compact device, reducing panel space requirements and simplifying installation.
• Extensive Time Range: Features a remarkable time range from 0.1 seconds to 100 days, covering virtually all industrial timing applications from rapid cycling to extended process monitoring.
• High Precision Timing: Delivers exceptional timing accuracy with less than 0.5% time error and 0.1% time deviation, ensuring reliable and consistent operation.
• Universal Power Supply: Supports a wide power supply range from 12 to 240 VAC/DC, eliminating the need for different models for various power sources.
• Adjustable Duty Cycle: Features ratio setting from 10% to 100%, allowing precise control over the ON/OFF cycle timing relationship.
• Visual Status Indication: Includes green LED for supply indication and red LED for relay status, providing clear operational feedback.
• Easy Configuration: Simple setup with intuitive controls for time and ratio settings, reducing commissioning time.
• Multiple Control Options: Available with NPN or PNP control signal compatibility for seamless integration with various control systems.
• Strong Anti-Interference Capability: Built-in protection against electrical noise, ensuring reliable operation in harsh industrial environments.
• DIN Rail Mounting: Standard DIN rail mounting per EN/IEC 60715, simplifying panel installation and system integration.
• Wide Temperature Range: Operates from -20°C to +60°C (-40°F to +85°F), suitable for diverse environmental conditions.

Understanding the FCT18-Xd Timing Function

The FCT18-Xd provides a sophisticated timing function that combines both ON-delay (rising edge) and OFF-delay (falling edge) operations. When the control signal (S) is applied:

1. On the rising edge (when S switches from OFF to ON), the relay output (R) remains OFF for duration T1 (ON-delay).
2. After T1 elapses, the relay output (R) switches ON.
3. On the falling edge (when S switches from ON to OFF), the relay output (R) remains ON for duration T2 (OFF-delay).
4. After T2 elapses, the relay output (R) switches OFF.

This dual-timing capability allows the FCT18-Xd to handle complex timing sequences with a single device, eliminating the need for multiple timers in many applications.

Time Setting Options

The FCT18-Xd offers an exceptional range of time settings to accommodate virtually any industrial timing requirement:

Each time range is easily selectable via the rotary switch on the front panel, allowing for quick configuration changes without rewiring or replacement.

Ratio Setting Capability

A unique feature of the FCT18-Xd is its adjustable ratio setting, which allows you to precisely control the timing proportion between different phases of operation. The ratio can be set from 10% to 100% in the following increments:

This flexibility allows for precise customization of timing cycles, making the FCT18-Xd suitable for a wide range of applications requiring specific ON/OFF duty cycles.

Model Variants and Selection Guide

The FCT18-Xd series is available in various configurations to meet different application requirements. The model number is structured as follows:

FCT18-Xd 1 W N

Wiring Configurations

The FCT18-Xd offers straightforward wiring options for both NPN and PNP control signal types:

NPN Configuration:

• Connect the power supply to terminals A1 (DC+ / AC L) and A2 (DC- / AC N)
• Connect the control signal (S) input
• Output terminals: 11, 12, 14 for single CO contact version; 11, 12, 14, 21, 22, 24 for dual CO contact version

PNP Configuration:

• Connect the power supply to terminals A1 (DC+ / AC L) and A2 (DC- / AC N)
• Connect the control signal (S) input
• Output terminals: 11, 12, 14 for single CO contact version; 11, 12, 14, 21, 22, 24 for dual CO contact version

Technical Specifications

Applications

The FCT18-Xd timer relay is ideal for a wide range of industrial and commercial applications where precise timing control is required:

• Industrial Automation: Conveyor systems, material handling equipment, packaging machinery
• Process Control: Sequential operations, batch processing, mixing and blending cycles
• HVAC Systems: Fan control, ventilation cycling, temperature regulation
• Pump Control: Irrigation systems, water treatment, chemical dosing
• Machine Protection: Cool-down periods, delayed start after power interruption
• Lighting Control: Sequential lighting, staircase lighting, display illumination
• Motor Control: Star-delta starting, acceleration/deceleration timing
• Energy Management: Load shedding, peak demand control
• Building Automation: Access control systems, security lighting
• Agricultural Systems: Irrigation scheduling, feed dispensing, climate control

Installation Guidelines

For optimal performance and longevity of the FCT18-Xd timer relay, we recommend following these installation guidelines:

1. Mount the device on a standard 35mm DIN rail in a clean, dry environment.
2. Ensure adequate ventilation around the device to prevent overheating.
3. Maintain an operating environment within the specified temperature range (-20°C to +60°C).
4. Use appropriate wire sizes (AWG13-20) for the terminals and maintain the recommended stripping length of 7mm.
5. Avoid installing near sources of strong electromagnetic interference.
6. Ensure the input voltage falls within the specified tolerance range.
7. When installing multiple relays, maintain adequate spacing between devices to allow for heat dissipation.
8. Verify all connections are secure and properly tightened to the specified torque (0.4N·m).
9. Label wiring connections for easy identification during maintenance.
10. Consider using surge protection devices when operating in environments with electrical noise or power fluctuations.

Dimensional Information

The FCT18-Xd features a compact design optimized for efficient use of panel space:

• Height: 90mm
• Width: 18mm
• Depth: 64mm
• Weight: Approximately 90g

Compliance and Certification

The FCT18-Xd timer relay is manufactured to comply with the following international standards:

• GB/T 14048.5
• IEC60947-5-1
• EN68112-1

These certifications ensure the device meets stringent requirements for safety, reliability, and electromagnetic compatibility in industrial environments.

Why Choose the VIOX FCT18-Xd?

The FCT18-Xd represents the culmination of years of engineering expertise in industrial timing control. Here’s why this asymmetrical timer relay stands out from the competition:

• Exceptional Versatility: With its wide time range and adjustable ratio settings, the FCT18-Xd can replace multiple specialized timers in your inventory.
• Superior Reliability: Engineered with robust components and protective features, the FCT18-Xd delivers consistent performance even in harsh industrial environments.
• Installation Simplicity: Clear wiring diagrams, straightforward setup, and intuitive controls reduce commissioning time and minimize the potential for errors.
• Space Efficiency: The compact 18mm width design maximizes panel space utilization without compromising on functionality or performance.
• Universal Compatibility: With both NPN and PNP control signal options and a wide supply voltage range, the FCT18-Xd integrates seamlessly with virtually any control system.
• Cost Effectiveness: By combining multiple timing functions in a single device with exceptional durability, the FCT18-Xd offers outstanding value and reduces total ownership costs.

Conclusion

The VIOX FCT18-Xd asymmetrical on-delay and off-delay timer relay with control signal represents a sophisticated yet user-friendly solution for applications requiring precise timing control. With its extensive range of timing options, dual-function capability, and robust design, this versatile device delivers exceptional performance across a wide spectrum of industrial and commercial applications.

Whether you’re designing a new system or upgrading existing equipment, the FCT18-Xd offers the flexibility, reliability, and ease of use that modern automation demands. Contact our technical support team today to learn how the FCT18-Xd can enhance your timing control applications.