Turn-on delay timer 220v. All about the washing machine wash timer

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30.07.202327.05.2017

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Spin speed setting

If the machine is on, the Programmer is set to

spinning program on the display steadily

symbol will light up. When the button is pressed, the display will

display the maximum allowed for the selected

program spin speed and flashing symbol. pressing again

press this button, you can reduce the spin speed, up to

before its exclusion (OFF). To return to maximum

spin speed, press the button again. Choose the one you want

spin speed value; after about 2 seconds installation

accepted by the machine, the symbol will remain lit.

The spin speed can be adjusted for all

grams of washing, except for program 6 and Drain.

Adjusting the Delay Timer

When the button is pressed, the display will show (OFF) and the

flash the corresponding symbol.

Press this button again the display shows "1h" (1h),

i.e. delay start by one hour, and so on, up to 24

hours. Select the desired delay value. After about 2

seconds the setting will be accepted by the machine, the display will show

set delay time, the symbol will remain lit.

If you now press the START/RESET button, the display will show a decreasing value

delay time (in increments of 1 hour) until the program starts. At this stage, you can change the delay value

only to the downside. The delay timer can be adjusted with all programs.

Temperature selection

When the machine is on, the Programmer is set to a program that can be adjusted

temperature, the symbol will light up steadily on the display. When the button is pressed, the display will

the maximum allowable temperature for the selected program is displayed and the symbol flashes. pressing

again on this button, you can reduce the temperature, until it turns off (OFF) wash in cold

water. To return to the maximum temperature, press the button again. Select the desired value

temperature; after about 2 seconds, the setting will be accepted by the machine, the symbol will remain stable

burn. Temperature adjustment can be carried out for all washing programs.

The various washing functions of the machine allow you to achieve the desired cleanliness and whiteness of your laundry. Order

function selection:

1. press the button of the desired function according to the table below;

2. turning on the corresponding button means that the function is activated.

Note: Fast flashing of the button means that this function cannot be activated for the specified

programs.

If a function is selected that is incompatible with another previously selected function, it will remain on

only the last selected function.

Purpose

Usage

Available from

programs:

Stain removal

Whitening cycle

for removing

the most persistent

pollution.

Pour bleach into additional insert 4 (see page 8).

The option is not used with the "ËÅÃKÀß ÃËÀÆKÀ" function.

Rinsing.

Additional

rinsing

Raises

efficiency

rinsing.

or when using a large amount of detergent.

1, 2, 3, 4, 7, 8,

Rinsing.

Easy ironing

Decrease

wrinkle

fabrics, relief

subsequent

ironing.

When this function is selected, programs 4, 5, 6 are interrupted, leaving the laundry

soaked in water (stop with water) and the corresponding button will flash.

To end the cycle, press the Start/Reset button or

LEGAYA ÃËLAÆKÀ.

To end the program with a drain, turn the program selector

to the corresponding symbol and press the button

PUSH/RESET (Start/Reset).

This option is not used with the Spot Removal feature.

3, 4, 5, 6, 7, 8,

9, rinse.

FUNCTION selection buttons

A timer is a device that counts down time. It has a second step and starts its work from the moment the equipment on which it is installed is launched. Installed on many devices, including washing machines. In this case, the timer is called the programmer.

general information

The timer, or programmer, is considered one of the most important details. He has a huge responsibility for choosing a washing program. For example, a timer for an LG washing machine or Indesit allows you to select one of the suggested actions: washing, delaying, drying, pre-soaking or spinning clothes. In appearance, it is a small knob located on the control panel. It is installed both on automatic washing machines and on semi-automatic machines.

There is no timer only on those devices that have a microprocessor and are equipped with a special function called fuzzy logic. You can start or stop the operation of such a washing machine not mechanically, but using the touch control panel.

If the timer breaks, the machine will not work.

Washing machine timer device - semi-automatic

Detail device

Regardless of where the timer is installed (automatic washing machine or semi-automatic), as well as its model (LG, Indesit, etc.), it has the same design. It includes the following details:

synchromotor;
reducer;
multiple contacts;
gears;
special protrusions and recesses that ensure the operation of the first element.

There are two types of washing machine wash timer:

Hybrid. It has very few functions, but is distinguished by reliability and a long service life.
Electronic. It is a multifunctional device. Allows you to set several programs at once, for example, delay washing or rinsing. The disadvantages of this type of timer include the need for frequent repairs. Even banal power surges in the network or unforeseen malfunctions in the operation of the washing machine itself lead to breakdown.

In most washing machines, for example, Indesit, Samsung, LG, released in recent years, a second type of wash and delay timer is installed.

Possible problems

It happens that the wash / delay timer unexpectedly fails. There are many reasons for this:

Sudden power surges. Cause damage to the device software. As a result, errors may appear during operation. Reinstalling the software will help fix the situation.
Careless attitude to the washing machine. Mechanical damage can cause the device to stop during the washing process or stop performing some of its functions.
Moisture has got on the timer gears. This usually leads to the formation of rust and, as a result, malfunctions. If possible, it is better to clean them first, since the replacement procedure is usually expensive.
If the timer does not work in the washing machine, it may be due to a malfunction of the heating element or heating element. Its failure provokes the failure of both other parts and the control unit. In addition, if the heating element gets too hot, the plastic parts of the timer may melt. That is why the uninterrupted operation of the heater should be given special attention.

As mentioned above, not a single washing machine, be it Indesit, LG., Siemens or Samsung, an automatic device or a semi-automatic device, does not work without a timer. Therefore, in the event of a breakdown, it is worth immediately replacing or repairing it.

You can determine that the timer has broken by several signs:

An automatic washing machine or a semi-automatic machine does not work even if there are no problems in the electrical network.
Washing constantly stops or does not start at all, regardless of how the programmer knob is set.
The time displayed on the display does not match any mode.
All indicators on the control panel flash at the same time.

There are two ways to fix breakdowns: independently and with the help of a wizard.

Problem solving

If the mechanical or electronic delay timer in the LG washing machine or other models is out of order, you can repair or replace it yourself. In the second case, it will be more difficult to act:

First you need to buy a branded part.
Download software suitable for the new timer and machine model.
Install the software on the computer and check the performance of the equipment.
Connect the control unit to the PC.
Produce firmware.

The operation of the proprietary device is tested at the factory, so it is easier to install and, if necessary, fix it.

So, how functional the washing machine will be depends on the timer. With its handle, you can control the washing process and select programs. If this element fails, the operation of the machine is impossible.

The 555 series chip was developed a long time ago, but still retains its relevance. On the basis of a chip, several dozens of various devices can be assembled with a minimum number of additional components in the circuit. The simplicity of calculating the values of the components of the body kit of the microcircuit is also its important advantage.

This article will focus on two options for using a microcircuit in a time relay circuit with:

Turn-on delay;
Shutdown delay.

In both cases, the 555th chip will function as a timer.

How the 555 chip works

Before moving on to the example of a relay device, consider the structure of the microcircuit. All further descriptions will be made for the microcircuit of the series NE555 manufactured by Texas Instruments.

As can be seen from the figure, the basis is RS flip-flop with inverted output, controlled by outputs from comparators. The positive input of the upper comparator is called THRESHOLD, the negative input of the lower - TRIGGER. The other inputs of the comparators are connected to a supply voltage divider of three 5 kΩ resistors.

As you most likely know, the RS flip-flop can be in a stable state (has a memory effect, 1 bit in size) either in logical "0" or in logical "1". How it functions:

R (RESET) sets the output to logical "1"(exactly “1”, not “0”, since the trigger is inverse - this is indicated by a circle at the output of the trigger);
Arrival of a positive impulse to the input S (SET) sets the output to logical "0".

Resistors of 5 kOhm in the amount of 3 pieces divide the supply voltage by 3, which leads to the fact that the reference voltage of the upper comparator (the “-” input of the comparator, it is also the CONTROL VOLTAGE input of the microcircuit) is 2/3 Vcc. The reference voltage of the bottom is 1/3 Vcc.

With this in mind, it is possible to compile state tables of the microcircuit with respect to the inputs TRIGGER, THRESHOLD and exit OUT. Note that the OUT output is the inverted signal from the RS flip-flop.

Using this functionality of the microcircuit, you can easily make various signal generators with a generation frequency independent of the supply voltage.

In our case, the following trick is used to create a time relay: the TRIGGER and THRESHOLD inputs are combined together and a signal is supplied to them from the RC chain. The state table in this case would look like this:

The NE555 wiring diagram for this case is as follows:

After power is applied, the capacitor begins to charge, which leads to a gradual increase in the voltage across the capacitor from 0V and beyond. In turn, the voltage at the TRIGGER and THRESHOLD inputs will, on the contrary, decrease, starting from Vcc +. As can be seen from the state table, the OUT output is logic "0" after Vcc+ is powered on, and the OUT output switches to logic "1" when the voltage drops below 1/3 Vcc at the indicated TRIGGER and THRESHOLD inputs.

Important is the fact that relay delay time, that is, the time interval between power on and charging of the capacitor until the OUT output switches to logic "1", can be calculated using a very simple formula:

T=1.1*R*C
And as you can see, this time does not depend on the supply voltage. Therefore, when designing a time relay circuit, you can not care about the stability of the power supply, which greatly simplifies the circuitry.

It is also worth mentioning that in addition to the 555 series, series 556 in a package with 14 pins. The 556 series contains two 555 timers.

Device with switch-on delay function

Let's go directly to the time relay. In this article, we will analyze, on the one hand, the circuit as simple as possible, but on the other hand, it does not have galvanic isolation.

Attention! The assembly and adjustment of the considered circuit without galvanic isolation should be carried out only by specialists with the appropriate education and approvals. The device is a source of danger, as it contains life-threatening voltage.

Such a device in its design has 15 elements and is divided into two parts:

Supply voltage generation unit or power supply unit;
Node with temporary controller.

The power supply operates on a transformerless principle. Its design includes components R1, C1, VD1, VD2, C3 and VD3. The 12 V supply voltage itself is formed on the zener diode VD3 and smoothed out by the capacitor C3.

The second part of the circuit includes an integrated timer with a body kit. We described the role of the capacitor C4 and the resistor R2 above, and now, using the formula indicated earlier, we can calculate the value of the relay delay time:

T = 1.1 * R2 * C4 = 1.1 * 680000 * 0.0001 = 75 seconds ≈ 1.5 minutes By changing the ratings of R2-C4, you can independently determine the delay time you need and redo the circuit for any time interval with your own hands.

The principle of operation of the scheme is as follows. After the device is connected to the network and the supply voltage appears on the VD3 zener diode, and, consequently, on the NE555 chip, the capacitor starts charging until the voltage at inputs 2 and 6 of the NE555 chip drops below 1/3 of the supply voltage, that is, up to about 4 V. After this event occurs, a control voltage will appear at the OUT output, which will start (switch on) relay K1. The relay, in turn, will close the load HL1.

Diode VD4 accelerates the discharge of capacitor C4 after a power outage so that after a quick reconnection to the network of the device, the response time is not reduced. Diode VD5 dampens the inductive surge from K1, which protects the circuit. C2 serves to filter noise on the power supply of the NE555.

If the parts are correctly selected and the elements are assembled without errors, then the device does not need to be adjusted.

When testing the circuit, in order not to wait one and a half minutes, it is necessary to reduce the resistance R1 to a value of 68-100 kOhm.

You probably noticed that there is no transistor in the circuit that would turn on relay K1. This was done not out of economy, but because of the sufficient reliability of output 3 (OUT) of the DD1 chip. The NE555 chip can withstand a maximum load of up to ±225 mA at the OUT output.

This scheme is ideal to control the operating time of ventilation devices installed in bathrooms and other utility rooms. Due to its presence Fans only turn on when you are in the room for a long time. This mode is much reduces the consumption of electrical energy and extends the life of the fans due to less wear of rubbing parts.

How to make a relay with a delay off

The above circuit, thanks to the features of the NE555, can be easily converted into a turn-off delay timer. To do this, you need to swap C4 and R2-VD4. In this case, K1 will close the load HL1 immediately after turning on the device. Load disconnection will occur after the voltage across the capacitor C4 increases to 2/3 of the supply voltage, that is, to approximately 8 V.

The disadvantage of this modification is the fact that after the load is disconnected, the circuit will remain under the influence of a dangerous voltage. You can eliminate this drawback by including the relay contact in the power supply circuit for the timer in parallel with the power button ( It's a button, not a switch!).

The scheme of such a device, taking into account all the improvements, is given below:

Attention! In order for the dangerous voltage to actually be removed from the circuit by the relay contact, it is necessary that the PHASE be connected exactly as shown in the diagram.

Please note that the 555 timer is applied and described on our website in another article that discusses. The circuit shown there is more reliable, contains galvanic isolation and allows you to change the time delay interval using a regulator.

If during the manufacture of the product you need a drawing of a printed circuit board, write about it in the comments.

General information about the device

A relay is a device that works like a battery. The duration of the working mechanism can be daily, weekly, hourly. Install these devices where you need to control circuits that have low power. In this case, there is complete isolation between the control and controlled conductors. The relay is designed to control several circuits at the same time, using a single signal.

Initially, relays were used in long-distance telephone circuits. They acted as an amplifier: they duplicated the signal from one circuit to another and transmitted it in a chain reaction. The relay worked in the first computers, carried out simple commands in logical circuits.

What is the relay used for? electromagnetic field? It is a shock absorber that slows down or completely de-energizes the movement when the coil suddenly enters the voltage environment. It is this property that makes it possible for the relay to delay time: the time of connecting the armature to the voltage coil slows down.

Several options for such devices

Using a time relay makes it possible to save on electricity consumption, as the light will turn on and off automatically after a set period of time.

How the time delay relay works

Due to the fact that the electric current creates a magnetic field with the help of conductors, the current state of the relay reacts with inductors to all changes. Locations of the magnetic field will depend on the shape of the conductor. If it is made at a right angle, then the field will be located in the same way, if in the form of a coil, then the magnetic field will be located along its entire length. The strength of the magnetic field directly depends on the voltage.

Relays have become popular because they have proven to be effective in use. They can control large and small voltages. The relay coil is capable of passing fractions of a watt through itself, while the contacts carry hundreds of watts of load energy.

The operating principle of the relay is binary amplifier on and off. As practice shows, one relay coil can actuate several contacts of one device. These can be contacts of any combination. The device works with contacts of any kind: mercury, metal, magnetic reeds.

What is a delay relay?

If the device is a simple two-channel electromagnetic relay, then it includes:

The armature is hinged to the yoke and mechanically connected to one or more sets of contacts. The anchor itself is held by a spring. It is installed in such a way that during the absence of current, a magnetic circuit is formed air gap. In this mode of the device, one of the contacts is in the closed position, the other is in the open position. Some types of devices have more contacts, it all depends on the functions provided.

When an electric current arrives, a magnetic field is generated, which makes it possible to activate the armature with the subsequent movement of the movable contact. This allows you to make breaks or connections with fixed contacts. When the contacts are open, the contacts are connected and closed; when the contacts are turned off, the actions are opposite. When the current is off, the armature takes its original position and returns under the action of a force that is several times less than the magnetic one, so its position is normally relaxed. Most often, this force is provided by a spring, gravity is used only in industrial installations.

When current is applied to the coil, the diode passes through it and dissipates energy from the decaying magnetic field during deactivation. If this process does not start, then the components of the circuit will receive an energy surge, which will lead to their failure.

DIY delay relay

To create a relay with a turn-off delay of 220 V, you do not need special electromechanical knowledge, it will be enough to have basic knowledge in physics and electromechanics. Exists definite guidance, which will help you assemble the relay yourself.

For a time relay, it is considered optimal using transistor circuits. Such relays are great for controlling the operation of the wipers on the car, turning the lights on and off on the street, and the operation of the washing machine. The 220V relay turn-on delay is an excellent option that combines domestic conveniences and excellent savings.