Product Description:
The H3DK-S2 is a DIN rail-mounted 4-mode multifunction timer from the Omron H3DK series, 22.5 mm slim width. It has no external start input: timing begins as soon as the supply is switched ON. Relay R2 can be set as a time-limit or instantaneous contact, and the front switch selects four commonly used timing modes.
Operating modes:
- A: ON Delay
- B2: Flicker ON Start
- E: Interval
- J: One-shot Output
Key features:
- 4 commonly used timing modes in one unit
- DPDT (2c) relay output; R2 switchable time-limit / instantaneous
- Power-ON start operation, no start signal required
- 8 timing ranges from 0.1 s to 1200 h
- Wide 24-240 VAC/DC supply (12 VDC version available)
- Green power LED and orange output LED
- 35 mm DIN rail mounting, 22.5 mm slim profile
Contact rating: 5 A @ 250 VAC resistive, 5 A @ 30 VDC resistive, 0.15 A max. @ 125 VDC resistive; minimum load 10 mA @ 5 VDC. Accuracy +/-1% FS max.; mechanical life 10,000,000 operations min.; electrical life 100,000 operations min. at 5 A @ 250 VAC. Operating temperature -20 to +55 C, IP30 (terminal block IP20).
Typical applications: power-on delay sequences, interval pulses, one-shot outputs, flicker indication, pump and fan start-up, machine and panel sequencing, simple automation circuits that do not require an external trigger signal.
Technical Parameters:
| Mounting |
35 Mm DIN Rail (EN 60715); 22.5 Mm Slim Width |
| Product family |
Omron H3DK / H3DKZ Series Solid-state (electronic) Timer, DIN Rail-mounted, 22.5 Mm Width |
| Terminal type |
Screw Terminals; Solid Wire Up To 2.5 Mm2; Ferrule With Insulative Sleeve; Tighten To 0.49 N.m (max 0.98 N.m) |
| Ambient humidity |
25% To 85% RH |
| Timing accuracy |
+/-1% Of FS Max. (setting Error +/-10% FS +/-0.05 S) |
| Operating temperature |
-20 To +50 °C (no Icing) |
| Storage temperature |
-40 To +70 °C (no Icing) |
| Degree of protection |
IP30 (terminal Block IP20) |
| Contact material |
Ag-alloy + Gold Plating |
Applications:
Motor Control
This category includes reduced-voltage starting methods such as the star-delta (wye-delta) technique for motors. It also covers delayed start mechanisms for pumps, fans, compressors, and conveyors. Additionally, motor interlocking and run-on timing functions are essential components in ensuring smooth and efficient operation.
Sequence & Process Control
Sequence and process control encompasses ON-delay and OFF-delay switching used in machine sequences. It involves generating interval pulses and one-shot output signals to control operations precisely. The use of signal-triggered ON/OFF delay loops helps in managing various automated processes, including heating, lighting, and auxiliary circuit sequencing.
Signaling & Alarm
Signaling and alarm systems utilize flashing warning lights and signal tower cycling to alert operators. Intermittent buzzer and alarm operations are employed to draw attention when necessary. Outputs can be pulsed or intermittent, catering to indicators and sirens for effective signaling.
Building, HVAC & Utilities
In building management and HVAC systems, there are controls for ventilation, air-conditioning, and lighting delay. Valve and pump cycling is critical in water treatment and irrigation systems to maintain efficiency. Timing controls are also applied to elevators, escalators, and other auxiliary equipment to ensure safety and functionality.
OEM Machinery & Panels
OEM machinery and control panels are widely used in packaging, textile, printing, and machine-tool industries. These panels serve as general-purpose automation solutions and provide relay replacement options. They also support retrofit and maintenance tasks for existing H3DK and H3DKZ installations, ensuring ongoing reliability and performance.
Packing and Shipping:
Product Packaging and Shipping for Variable Frequency Converter
The Variable Frequency Converter is carefully packaged to ensure safe delivery and optimal protection during transit. Each unit is enclosed in an anti-static bag to prevent electrostatic discharge, and then placed in a custom-fitted foam insert to absorb shocks and vibrations.
The foam insert and product are secured within a sturdy, double-walled corrugated cardboard box designed to withstand handling and stacking. The packaging also includes clear labels indicating fragile contents and proper handling instructions.
For added protection, especially during international shipping, the boxed product is further packed into a wooden crate or palletized with shrink wrap and corner protectors as needed.
Shipping options are selected based on destination and urgency, utilizing reputable carriers that provide tracking and insurance services. Delivery timelines and tracking information are communicated promptly to ensure transparency and customer satisfaction.
All packaging materials used are environmentally friendly and comply with international shipping regulations to minimize environmental impact while ensuring product safety.
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