FCT18-P Asymmetrical On-Delay Time Relay
Advanced Dual-Stage Timing Control with Retrigger Functionality
Product Overview
The FCT18-P is an advanced asymmetrical power on-delay relay featuring dual-stage timing (T1 and T2) with retrigger/restart control signal functionality. Engineered for complex industrial automation systems, it provides precise two-stage timing control with exceptional accuracy (±0.1%) and robust construction. With its compact 18mm DIN rail design and universal voltage input (12-240V AC/DC), the FCT18-P delivers reliable performance in demanding industrial environments requiring sophisticated timing sequences.
Key Technical Advantages
Universal Voltage Input
Operates with 12-240V AC/DC, compatible with global industrial power standards.
Dual-Stage Timing
Precise control with independent T1 (delay) and T2 (hold) timing parameters.
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.
Retrigger Functionality
Control signal retrigger capability for flexible operation.
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-P asymmetrical on-delay relay excels in scenarios requiring precise two-stage timing sequences. Below are key industrial applications where its unique functionality delivers superior performance:
Motor Soft Start Systems
Delays motor start (T1) after power-up to prevent inrush current, then runs for a fixed time (T2) before automatic shutdown.
Key Benefits:
- Prevents motor damage from startup surges
- Automatic shutdown after T2 period
- Retrigger capability for intermittent operation
Staged Lighting Systems
Delays primary lighting activation (T1) after power-on, with secondary lighting activating for T2 duration.
Key Benefits:
- Energy-efficient staged illumination
- Prevents simultaneous power surges
- Adapts to different lighting requirements
Safety Sequence Control
Activates safety interlocks after T1 delay, maintaining them for critical T2 period during machine operation.
Key Benefits:
- Ensures proper safety sequence activation
- Maintains safety during critical operations
- Retrigger for continuous safety monitoring
Chemical Dosing Systems
Delays chemical injection (T1) after process start, maintaining flow for precise T2 duration.
Key Benefits:
- Precise chemical dosing timing
- Prevents premature chemical introduction
- Ensures accurate dosing duration
Access Control Systems
Delays door unlocking (T1) after authentication, maintaining unlock state for T2 duration.
Key Benefits:
- Enhanced security with staged access
- Controlled access duration
- Retrigger for extended access periods
Robotic Sequence Control
Delays secondary robotic functions (T1) after primary activation, maintaining for precise T2 duration.
Key Benefits:
- Precise coordination of robotic movements
- Prevents mechanical stress from simultaneous activation
- Maintains operation for required duration
Timing Sequence
Timing Operation:
At power-on, after T1 delay, contact R closes for T2 duration.
When control signal S is applied and disappears, T1 timing starts.
When T1 timing completes, contact R closes for T2 duration.
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)
- T1/T2: Timing parameter adjustment
Note: Always disconnect power before making connections and ensure proper voltage ratings are observed.
Parameter Setting
Time Adjustment Protocol:
Technical Specifications
| Parameter | FCT18-P1 | FCT18-P2 |
|---|---|---|
| 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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