Start-stop control buttons are quite common in production. These devices are used to start machines. Before connecting the model, it is important to know the type of switch. There are contact and wireless modifications. Additionally, the controller that is used during installation plays a role. To understand this issue, first of all, you need to consider the standard switch wiring diagram.
Connection diagram
The standard start-stop button connection scheme involves the use of a closing contactor. Triggers are selected with a conductivity of 4.5 cm. Some experts install devices directly through the relay. Only wired modifications are suitable for this. If you arrange devices with a comparator, then the trigger is used with insulators. The first wires from the switch close on the relay winding. The contactor is connected directly to the transceiver.
Review of QF1 switches
The starter is connected through the "start-stop" button using a relay. If we consider a circuit with a wired controller, then the thyristor is used for twophases. Directly the capacitor is required for 4 pF. Experts say that regulators can be used for two and three outputs. However, in this case, much depends on the type of rectifier. In standard machines, it is installed with a positive charge.
It has a resistance of at least 50 ohms. It is also important to note that it has a closing plate. In such a situation, the first contacts from the switch are connected to the relay. In this case, the controller closes in the first phase. It is important to make sure the circuit is grounded before testing resistance. It is also recommended to pre-connect an isolator. The second contact from the switch is connected to the expander. A stabilizer for connection will require a wave type.
Circuit with non-reversing starter
Non-reversing starters have been seen a lot lately. The start-stop buttons can be connected directly through the relay. In this case, triggers are not used. It should also be noted that the setting of the switch can be done through a comparator. In such a situation, it will be possible to install a regulator. Additionally, a stabilizer is installed.
Experts say that the converter is used bidirectional type. The connection of the first contact is carried out in the first phase. It should also be noted that the capacitors in the circuit are of the capacitive type. In this case, the stabilizer will need a single-pole type. If we consider two-channel converters, then only contact expanders are used for them. The switches in this case are closed with a lining. Firstcontacts are supplied in the second phase.
Application of reversing starters
Connecting the start-stop button through reversing starters is carried out with and without converters. If we consider the first option, then capacitors are used with semiconductor insulators. The winding itself is used at 15 V. The resistance indicator on it must be at least 30 ohms.
The comparator for the switch is used for two outputs. The first contact closes on the first phase. In this case, the stabilizer must be in the open state. Some modifications are sold with filters. It is also worth noting that there are contactors with unijunction resistors.
Instruction for PML-1100 series starters
How to connect the start-stop button? This is quite simple to do through a channel thyristor. Converters for the device are selected for two filters. The resistance indicator is on average 55 ohms. Dinistors are allowed to use bidirectional type.
Specialists say that it is important to clean the contactors thoroughly. Additionally, it is worth noting that the conductors must be well insulated. The first contact closes on the second phase. The conductivity of the circuit is on average 4.5 cm. The expander is used when installing a broadband type.
Connecting a modular starter
Only connect to modular starterswired start-stop button. In this case, converters are often used with adapters. The first contact from the switch closes on the first phase. The insulator itself is installed last. The thyristor is used with a rectifier. However, in this case, much depends on the controller. If we consider models for three outputs, they have two dinistors. The first contact from the switch closes on the second phase. The stabilizer is installed with one filter at the end.
Open type starters
The "start-stop" button in the case is connected to an open-type starter with a wired trigger. The transceiver is used with one or more expanders. When connecting the converter, the resistance is checked, since the capacitor may not be able to withstand the current load.
This parameter averages 33 ohms. If you install a switch with a three-pin controller, then the transceiver is used as a multi-channel type. Its conductivity should be approximately 4.5 cm. Additionally, it is important to note that the second contact from the switch closes in the first phase. Experts say that the conductor on the plate must be carefully clamped. The insulator is installed behind the expander. If you solder a pass-through transceiver, then two filters are used for the circuit.
Connecting enclosed starters
The start-stop button for these starters is installed directly through the relay. Transistors for this purpose are selected with low conductivity. Tested before connecting componentsoutput impedance. The specified parameter in the circuit should not exceed 45 ohms. At high overloads, it is recommended to change the filter. It is also worth noting that problems can be observed due to the low conductivity of the transistor. The first contact from the switch closes on the first phase. The stabilizer for the circuit is used only single-pole type. The threshold overload indicator for the presented component is at least 5 A.
Connecting a switch via a one-way trigger
Single junction flip-flops are highly conductive. Insulators for devices are selected bidirectional type. A simple "start-stop" button is installed directly through the relay. It should also be noted that the installation of the device can be done through the control unit. If we consider a conventional milling machine, then the transceiver is used as a single-channel type. The first contact from the switch is connected to the second phase. At this stage of work, it is important to test the output impedance. At 3 A overload, the conductivity should not exceed 5.5 See
If solid-state controllers are used, then the average resistance is 55 ohms. In addition, it is important to note that normally open contactors for two outputs are often installed. In such a situation, an isolator is installed behind the converter. Thus, the overload will ultimately not exceed 6 A. Flip-flops are often used with an expander. Contacts can be connected directly to them.
Using two-transition triggers
Quite oftenthe start-stop button is set with two-period triggers. They are connected through a 12 V relay. The power supply is of a pulsed type. The relay is allowed to be used for 4 A. The trigger for setting the switch is mounted behind the converter. The output resistance is no more than 40 ohms. If the element overheats a lot, then the problem lies in the overload of the trigger. For this, only wire capacitors are used. In this case, the comparators are closed in the first phase.
Devices with capacitive controllers can only be connected via dinistors. In this case, modifications to only three outputs are suitable. The insulator is installed at the output of the circuit. In this case, the converter is selected with a bidirectional blocker. The output voltage in the circuit is about 15 V. In this case, the overload factor should not exceed 4 A. If a dipole controller is used, then the adapter can be used on two outputs. The first contact from the switch closes on the second phase. In this case, the resistance should be no more than 30 ohms.
