FCT18-BgF Industrial Interval Relay
Control Signal Activated Timing with Signal Ignore Functionality
Product Overview
The FCT18-BgF is an advanced interval relay that activates timing sequences when a control signal is removed. Engineered for industrial automation systems requiring precise control signal-triggered timing, this relay provides accurate interval timing with a unique “signal ignore” feature during active timing periods. With its robust construction and wide operating voltage range (12-240V AC/DC), the FCT18-BgF is ideal for applications requiring reliable timing after signal termination.
Key Technical Advantages
Universal Voltage Input
Operates with 12-240V AC/DC, compatible with global industrial power standards.
Control Signal Activation
Starts timing sequence when control signal is removed, not when applied.
Signal Ignore Function
Ignores control signal changes during active timing for uninterrupted operation.
Extensive Timing Range
Precise timing from 0.1 seconds to 100 days for diverse industrial applications.
Exceptional Accuracy
Repeat accuracy ∆< ±0.5% and Time setting accuracy ∆< ±0.1%.
Industrial Robustness
Designed for -20°C to +60°C environments with EMI resistance.
High-Capacity Output
16A C/O contacts (1 or 2 sets) for industrial loads.
Button Setting & Locking
Precision time setting via tactile buttons with locking protection to prevent accidental changes.
Industrial Application Scenarios
The FCT18-BgF excels in scenarios requiring timing sequences triggered by signal removal. Below are key applications where its unique functionality delivers superior performance:
Secure Door Locking Systems
Delays door locking mechanism activation after access signal is removed, ensuring personnel safely exit secured areas.
Key Benefits:
- Enhanced safety with exit grace period
- Prevents accidental lock-ins
- Signal ignore prevents unintended access
Machine Safety Interlocks
Maintains safety systems active for a preset time after emergency stop is released, ensuring safe restart procedures.
Key Benefits:
- Prevents immediate restart after emergency stop
- Signal ignore during timing prevents bypass
- Complies with industrial safety standards
Post-Operation Cooling
Activates cooling systems for preset time after machine operation stops, managing residual heat effectively.
Key Benefits:
- Extends equipment lifespan
- Energy-efficient cooling management
- Signal ignore prevents premature shutdown
Chemical Processing
Controls post-reaction flushing cycles after process completion signal ends, ensuring thorough system cleaning.
Key Benefits:
- Prevents chemical residue buildup
- Ensures consistent product quality
- Signal ignore maintains cycle integrity
Conveyor Systems
Maintains conveyor operation after stop signal to clear residual materials, preventing jams and blockages.
Key Benefits:
- Prevents material buildup at stops
- Reduces maintenance requirements
- Signal ignore prevents false restarts
Irrigation Systems
Activates post-watering drainage cycles after irrigation signal ends, preventing waterlogging and root damage.
Key Benefits:
- Optimizes plant growth conditions
- Conserves water resources
- Signal ignore maintains drainage cycle
Timing Sequence
Timing Operation:
Output (R) closes and timing starts immediately
After preset time (T), output (R) opens
Output remains open until next signal cycle
Control signal is ignored during active timing period
Wiring
Connection Guide:
Standard DIN rail mounting with screw terminals for secure industrial connections:
- A1/A2: Power supply terminals
- S: Control signal input
- 11/12/14: Output contacts (C/O) for FCT18-BgF1
- 21/22/24: Additional output for FCT18-BgF2
Parameter Setting
Time Adjustment Protocol:
Technical Specifications
| Parameter | FCT18-BgF1 | FCT18-BgF2 |
|---|---|---|
| Input terminal | A1-A2 | |
| Voltage range | AC230V / DC24V / ACDC12-240V | |
| Voltage tolerance | -15% ~ +10% | |
| Output type | 1 C/O contact | 2 C/O contacts |
| Rated current | 1×16A | 2×16A |
| Power consumption | AC 3.5VA / DC 2.0W | |
| Time delay setting accuracy | ±0.1% of full-scale value | |
| Repeat accuracy | Δt < ±0.5% | |
| Mechanical life | 10 million operations | |
| Electrical life | 100,000 operations | |
| Ambient temperature | -20°C to +60°C | |
| Mounting | DIN rail EN/IEC 60715 | |
| IP rating | IP20 | |
| Dimensions | 90×18×64mm | |
| Standards | IEC60947-5-1, EN6812-1 | |
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