The adjustment method of the time relay

The adjustment method of the time relay needs to be operated differently according to its type (such as air damping type, electromagnetic type, electronic type, digital type, etc.). The adjustment steps and precautions for common types are as follows:

 I. Air Damping Time Relay (Mechanical Type)

**Principle**: Achieve time delay through the air damping effect, and adjust the size of the air inlet hole to change the damping speed.

**Adjustment Steps*Schneider time relay RE22R2QEMR*:

1. **Power-off Operation**: Ensure that the circuit where the relay is located is powered off to avoid the risk of electric shock.

2. **Open the Shell**: Remove the protective cover or shell (some models need to be disassembled with a screwdriver).

3. **Find the Adjustment Component*Schneider Circuit Breakers Price*:

    - Usually, there is a **knob** or **screw** (marked with "TIME" or "delay adjustment") that is connected to the air inlet hole of the damping air chamber.

    - Rotate the knob clockwise: Reduce the air inlet hole, the air enters more slowly, and the **delay time is prolonged*Chint's NB1-63DC series DC circuit breakers Price**.

    - Rotate the knob counterclockwise: Increase the air inlet hole, the air enters faster, and the **delay time is shortened**.

4. **Test and Verification**: After adjustment, power on for testing and observe whether the delay meets the requirements (multiple fine-tunings can be carried out).

5. **Restore the Shell**: After confirming that there is no error, reinstall the shell.Chint NXR series thermal overload relays price

**Note**: The adjustment range is limited (usually from a few seconds to dozens of seconds), and do not force excessive rotation.

 II. Electromagnetic Time Relay (Traditional Type)

**Principle**: Use the release of the spring or the damping mechanism after the electromagnetic coil is powered off to achieve time delay.

**Adjustment Method*Chint NXR series thermal overload relays price*:

1. **Adjust the Release Spring*CHINT surge protector price*:

    - The tightness of the spring affects the reset speed of the armature. The looser the spring (loosen the adjustment screw), the **longer the delay time**; the tighter the spring (tighten the screw), the **shorter the delay time**.

2. **Adjust the Non-magnetic Gasket*Schneider LRD Thermal Relay Price*:

    - The thickness of the gasket affects the air gap of the electromagnetic mechanism. The thicker the gasket (increase the number or thickness of the gaskets), the larger the air gap, the faster the magnetic flux decays, and the **longer the delay time**; otherwise, it is shortened.

**Operation Note**: Tools such as tweezers and screwdrivers are required for fine adjustment. Avoid the deformation of the spring or the loss of the gasket, and test the stability multiple times after adjustment.

 III. Electronic Time Relay (Including Digital Type)

1. Analog Type (Potentiometer Adjustment)

**Adjustment Steps**:

1. **Locate the Knob after Power-off**: Find the potentiometer knob marked with "TIME" or "DELAY" (usually a blue or black knob).

2. **Rotate for Adjustment**:

    - Rotate clockwise: Increase the resistance, and the **delay time is prolonged**.

    - Rotate counterclockwise: Decrease the resistance, and the **delay time is shortened**.

3. **Some Models with DIP Switches**:

    - If there is a "s/min/h" gear switch, first select the time unit (seconds/minutes/hours), and then fine-tune the specific value through the knob.

2. Digital Type (Button Setting)

**Operation Steps (Taking Common Models as an Example)**:

1. **Enter the Setting Mode after Power-on**:

    - Press the **"SET" button** for 3 seconds, and the current delay value will flash on the screen.

2. **Select the Delay Mode**:

    - Press the **"Mode Button"** to switch between "On Delay" (ON DELAY) and "Off Delay" (OFF DELAY).

3. **Set the Time Parameter**:

    - Use the **"+" and "-" buttons** to adjust the value, and press the **"Unit Button"** to select the time unit (ms/sec/min/h).

4. **Save the Setting**:

    - Press the **"SET" button** to confirm, and the screen will stop flashing, and the setting will take effect.

5. **Test the Function**: Power on and trigger the relay, and observe whether the delay meets the set value.

IV. General Precautions

1. **Safety First**: Be sure to disconnect the power supply before adjustment to avoid electric shock or damage to components.

2. **Check the Instruction Manual**: The adjustment methods of different brands and models may vary (for example, some relays need to be set through programming software), and it is recommended to refer to the original factory manual.

3. **Parameter Range**: Do not exceed the maximum/minimum delay range marked on the relay (such as "0.1s-30min") to avoid overloading.

4. **Wiring Inspection**: After adjustment, confirm that the wiring terminals are firm (such as whether the delay contacts "NO/NC" are correctly connected) to prevent poor contact.

5. **Stability Test**: Trigger the relay multiple times to ensure that the delay accuracy meets the requirements (the accuracy of the electronic type is usually higher than that of the mechanical type).

Summary

- **Mechanical Type (Air Damping/Electromagnetic)**: Adjust through physical knobs, springs or gaskets, suitable for simple scenarios, with low accuracy.

- **Electronic Type (Including Digital Type)**: Set through potentiometers or buttons, with intuitive operation, high accuracy, and support for multiple mode delays (on/off delay), which is the current mainstream type.

Select the corresponding method according to the type of the relay actually used. For complex models, it is recommended to further operate in combination with the instruction manual or the technical support of the manufacturer.