FCT18-RL Industrial Asymmetrical Time Relay
Dual-Output Sequential Timing Control with Independent T1/T2 Periods
Product Overview
The FCT18-RL is an advanced asymmetrical time relay featuring dual independent timing periods (T1 and T2) that sequentially control two output relays. Engineered for complex industrial automation systems, it provides alternating control signals 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-RL is the optimal solution for applications requiring precise alternating timing control.
Key Technical Advantages
Asymmetrical Cycle Timing
Independent timing periods T1 and T2 controlling alternating outputs.
Extensive Timing Range
Precise timing from 0.1 seconds to 100 days for diverse industrial applications.
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.
Universal Voltage Input
Operates with 12-240V AC/DC, compatible with global industrial power standards.
Dual High-Capacity Outputs
2×16A C/O contacts for industrial loads.
Button Setting & Locking
Precision time setting via tactile buttons with locking protection to prevent accidental changes.
Industrial Application Scenarios
The FCT18-RL asymmetrical relay excels in scenarios requiring alternating control of two systems with independent timing sequences. Below are key applications where its functionality delivers superior performance:
Alternating Warning Lights
Controls alternating flashing patterns for industrial warning systems with independent timing for each light sequence.
Key Benefits:
- Creates complex flashing patterns for enhanced visibility
- Independent control of two light circuits
- Precise timing ensures clear warning signals
Irrigation Systems
Alternates watering cycles between different zones with independent timing for each section.
Key Benefits:
- Optimizes water distribution between zones
- Independent timing for each irrigation section
- Reduces pump cycling and energy consumption
Pump Alternation Systems
Automatically alternates between main and backup pumps with independent run times.
Key Benefits:
- Equalizes wear between primary and backup pumps
- Independent timing for each pump cycle
- Extends equipment lifespan
Waste Processing
Controls alternating operation of shredders and compactors with independent timing sequences.
Key Benefits:
- Optimizes processing workflow
- Prevents simultaneous operation overload
- Independent timing for each processing stage
Painting Systems
Coordinates alternating paint application and drying cycles with independent timing.
Key Benefits:
- Precise control of application and drying phases
- Independent timing for each process stage
- Increases production efficiency
Chemical Processing
Controls alternating mixing and dispensing operations with independent timing for each process.
Key Benefits:
- Precise control of reaction times
- Independent timing for mixing and dispensing
- Ensures consistent product quality
Timing Sequence
Timing Operation:
On power-up: R2 (21-24) contacts close for T1 duration
After T1: R2 contacts open and T2 period begins
After T2: R1 (11-14) contacts close for T1 duration
After T1: R1 contacts open and T2 period begins
After T2: Sequence repeats with R2 contacts closing
This alternating cycle continues until power is removed
Wiring Configuration
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 R1 contacts (C/O)
- 21/22/24: Output R2 contacts (C/O)
Parameter Configuration
Time Adjustment Protocol:
Technical Specifications
| Parameter | FCT18-RL | |
|---|---|---|
| Input terminal | A1-A2 | |
| Voltage range | AC230V / DC24V / ACDC12-240V | |
| Voltage tolerance | -15% ~ +10% | |
| Output type | 2 C/O contacts | |
| Rated current | 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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