Product Description:
The H3DK-G is a DIN rail-mounted star-delta (wye-delta) timer from the Omron H3DK series, 22.5 mm slim width, used to start three-phase motors through a star connection and then transfer them smoothly to a delta connection. The star run time t1 and the transfer time t2 are set independently, and the timer resets itself after each cycle.
Key features:
- Dedicated star-delta motor starting sequence
- Star output SPDT and delta output SPDT relay contacts
- Star time t1: 1-12 s (x1) or 10-120 s (x10)
- Transfer time t2: 0.05 / 0.1 / 0.25 / 0.5 s selectable
- Wide 24-240 VAC/DC supply; 12 VDC (GA) and 240-440 VAC (GE) versions available
- Green star LED and orange delta LED indicate the active circuit
- 35 mm DIN rail mounting, 22.5 mm slim profile
Contact rating: 5 A @ 250 VAC resistive, 5 A @ 30 VDC resistive; minimum applicable load 10 mA @ 5 VDC. Transfer time total error +/- (25% of transfer time + 5 ms) max. Operating temperature -20 to +55 C, protection IP30 (terminal block IP20).
Typical applications: star-delta motor starters, reduced-voltage start-up of pumps, fans, compressors and conveyors, crane and hoist motor control, machine tool and plant motor switchgear, industrial automation panels.
Technical Parameters:
| Operating Temperature |
-20 To +50 °C (no Icing) |
| Mounting |
35 mm DIN Rail (EN 60715); 22.5 mm Slim Width |
| Timing Accuracy |
+/-1% Of FS Max. (setting Error +/-10% FS +/-0.05 s) |
| Degree of Protection |
IP30 (terminal Block IP20) |
| 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) |
| Contact Material |
Ag-alloy + Gold Plating |
| Product Family |
Omron H3DK / H3DKZ Series Solid-state (electronic) Timer, DIN Rail-mounted, 22.5 mm Width |
| Storage Temperature |
-40 To +70 °C (no Icing) |
| Ambient Humidity |
25% To 85% RH |
Applications:
Motor Control
This category covers various motor-related control functions. It includes the star-delta (wye-delta) reduced-voltage motor starting method, which helps in reducing the starting current of motors. Additionally, control over start-up delays for equipment such as pumps, fans, compressors, and conveyors is provided. Motor interlock and run-on timing features ensure safe and efficient motor operation.
Sequence & Process Control
Sequence and process control involves managing timed operations within machinery. This includes ON-delay and OFF-delay switching in machine sequences, as well as generating interval pulses and one-shot output signals for precise control actions. Signal-triggered ON/OFF delay loops are also utilized, making it possible to control the timing of heating, lighting, and auxiliary circuit sequences effectively.
Signaling & Alarm
Signaling and alarm functions focus on alert and indication systems. Flashing warning lights and cycling signal towers are used to provide visual alerts. Buzzer and alarm operations can be intermittent, contributing to effective audible signaling. Pulsed or intermittent outputs to indicators and sirens help in managing various alert scenarios.
Building, HVAC & Utilities
This segment deals with control requirements in building management, HVAC systems, and utilities. It includes delay controls for ventilation, air-conditioning, and lighting systems. Valve and pump cycling is managed in applications such as water treatment and irrigation. Timing control is also extended to elevators, escalators, and other auxiliary equipment to optimize performance and safety.
OEM Machinery & Panels
OEM machinery and panel applications include control solutions for packaging, textile, printing, and machine-tool industries. These general-purpose automation functions often serve as relay replacements, helping to modernize and streamline control systems. Furthermore, retrofit and maintenance support is provided for existing H3DK and H3DKZ installations, ensuring their continued reliable operation.
Packing and Shipping:
Product Packaging:
The Variable Frequency Converter is carefully packaged to ensure safe delivery and protection from damage during transit. Each unit is enclosed in an anti-static bag followed by a custom-fitted foam insert to cushion against shocks and vibrations. The product is then placed inside a sturdy, double-walled corrugated cardboard box. All packaging materials are environmentally friendly and comply with international shipping standards. The box is clearly labeled with handling instructions and product details for easy identification.
Shipping:
We offer worldwide shipping for the Variable Frequency Converter through reliable carriers. All shipments are tracked and insured to provide peace of mind. Depending on the destination, shipping options include standard, expedited, and express delivery. The product is dispatched within 2-3 business days after order confirmation. Customs documentation and compliance with import regulations are handled to ensure smooth delivery. Customers receive a tracking number once the order is shipped, allowing them to monitor the shipment status in real-time.
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