FCT18-AcR Asymmetrical Flashing Relay
Dual-Timer Control with Starting Off Functionality
Product Overview
The FCT18-AcR is a precision asymmetrical flashing relay with starting-off functionality. Engineered for industrial automation and control systems, it provides reliable dual-timer control with exceptional accuracy (±0.1%) and durability. With its compact 18mm DIN rail design and wide operating voltage range (12-240V AC/DC), the FCT18-AcR is the optimal solution for applications requiring alternating on/off timing cycles with initial open state.
Key Technical Advantages
Universal Voltage Input
Operates with 12-240V AC/DC, compatible with global industrial power standards.
Dual Timing Control
Precise timing for T1 (0.1s-100d) and T2 (0.1s-100d) intervals.
Ultra-Compact Design
Space-saving 18mm width (90×18×64mm) for high-density control panels.
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.
Starting Off Function
Output starts in open state upon control signal application.
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-AcR asymmetrical flashing relay excels in scenarios requiring alternating on/off timing cycles with an initial open state. Below are key applications where its functionality delivers superior performance:
Warning Light Systems
Controls flashing warning lights with customizable on/off intervals for industrial safety systems.
Key Benefits:
- Customizable flash patterns for different alert levels
- Starts in off state to prevent false alarms
- Energy-efficient operation
Chemical Dosing Systems
Manages precise alternating dosing cycles with pause intervals for chemical mixing processes.
Key Benefits:
- Ensures complete mixing with timed pauses
- Prevents overflow with initial off state
- Accurate chemical ratio control
Ventilation Cycling
Controls ventilation systems with alternating run and rest periods for energy efficiency.
Key Benefits:
- Extends equipment lifespan with rest periods
- Reduces energy consumption
- Starts in off state for controlled activation
Conveyor Sequencing
Coordinates alternating operation of multiple conveyors with precise timing intervals.
Key Benefits:
- Prevents material buildup with timed pauses
- Optimizes production flow
- Starts in off state for safety
Heating/Cooling Cycles
Manages alternating heating and cooling phases in industrial processes.
Key Benefits:
- Prevents thermal shock with gradual transitions
- Energy-efficient operation
- Precise temperature control
Packaging Systems
Controls filling and sealing operations with precise timing intervals.
Key Benefits:
- Ensures accurate fill levels
- Prevents spillage with initial off state
- Optimizes production throughput
Timing Sequence
Timing Operation:
1. Control signal (S) applied – output (R) starts in open state
2. After preset time (T1) – output switches to closed state
3. After preset time (T2) – output switches to open state
4. Cycle repeats until control signal is removed
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 & 21/22/24: Output contacts (C/O)
Parameter Setting
Dual Time Adjustment:
Technical Specifications
| Parameter | FCT18-AcR1 | FCT18-AcR2 |
|---|---|---|
| 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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