Time relay wiring method and wiring diagram - Solutions - Huaqiang Electronic Network

Probe domestic switch needle KG-300K, needle head diameter is 3.0mm, normally open switch needle

Photocoupler

Wiring plug: 8-pin round plug pin definition:

Wiring method 1 (domestic standard) | Wiring method 2 (OMRON)

Pin number definitions:

• 1 - Relay B common | 1 - External switch common
• 2 - Power supply line N (AC85-265V)
• 3 - Relay B normally open contact | 3 - Time reset terminal (RESET) / switch on effective
• 4 - Relay B normally closed contact | 4 - Timing enable terminal (GATE) / open effective
• 5 - Relay A normally closed contact | 5 - Relay A normally closed contact
• 6 - Relay A normally open contact | 6 - Relay A normally open contact
• 7 - Power line L (AC85-265V)
• 8 - Relay A common terminal | 8 - Relay A common terminal

How to wire this time relay? Let's walk through the process step by step.

After power is connected, the relay energizes. Once the set time is reached, another indicator light turns on. However, if the device isn’t powered when pins 5 and 8 are connected, you can connect it to pins 9-5 or 12-8. For example, if you want to delay lighting a bulb, connect the neutral wire directly to the bulb, the live wire to either pin 9 or 12, and connect pin 5 or 8 to the bulb.

Pins 13 and 14 are connected to a DC power supply, with pin 13 as negative and 14 as positive.

Normally closed contacts: 1-9, 4-12

After power is turned on, the relay starts timing. When the set time is reached, 1-9 opens, 5-9 closes; 4-12 opens, 8-12 closes.

When power is turned off, 1-9 immediately re-closes, 5-9 opens; 4-12 re-closes, 8-12 opens.

Pins 13-14 are the coil, connected to the power supply. The rated current of the contact is 5A, so ensure that the load current does not exceed 5A to avoid damage.

This type of relay is made in Hong Kong. 4-12 and 1-9 are normally closed contacts, while 8-12 and 5-9 are normally open contacts.

Wiring method for DH48S-S time relay:

Product model: DH48S-1Z

Time relay wiring method:

1. Control wiring: Treat it like a DC relay. Pins 3 and 7 are used for 12V control voltage; 2 and 7 for 24V. Pin 7 acts as the negative terminal and should be connected to the neutral line. Pin 2 connects to the live wire of 220V.
2. Control function: Even if the control voltage is connected, its effect depends on the timer settings on the panel.
3. Function understanding: It acts as a single-pole double-throw switch. Pin 8 is the moving contact, 5 is the normally closed, and 6 is the normally open. When the relay is inactive, 8 and 5 are connected; when active, 8 and 6 are connected.
4. Load wiring: Connect the neutral or negative terminal of the power supply to the appliance’s corresponding terminal. The live wire or positive pole goes to pin 8, and the appliance’s live wire or positive pole to pin 6. Pin 5 remains unused.
5. Working principle: During non-timing periods, 8 and 5 are connected (like a switched-off state). When timing is active, the relay operates, connecting 8 and 6 (like a switched-on state).

Pins 1 and 2 are the power supply. The first group has 3 and 4 as normally open, 3 and 5 as normally closed. The second group has 6 and 7 as normally open, 6 and 8 as normally closed.