Control buttons "start-stop" quite oftenare found in production. These devices are used to start the machine. Before connecting the model, it is important to know the type of the switch. There are contact and wireless modifications. In addition, the controller that is used for installation plays a role. In order to understand this question, first of all, it is necessary to consider the standard switch connection scheme.
Connection diagram
Standard connection scheme start-stop buttonimplies the use of a closing contactor. Triggers are selected with conductivity from 4.5 See Some experts install devices directly through the relay. Only wire 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 are closed on the relay winding. The contactor is directly connected to the transceiver.
Consideration of switches QF1
Connection of the starter via the "start-stop" buttonis carried out by means of a relay. If we consider a circuit with a wired controller, then the thyristor is used in two phases. Directly, a capacitor is required at 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.
The resistance at it is equal not less than 50 Ohm.It is also important to note that it has a closing plate. In this situation, the first contacts from the switch are connected to the relay. In this case, the controller closes in the first phase. Before checking the resistance, it is important to make sure the circuit is grounded. It is also recommended to connect the insulator in advance. The second contact from the switch is fed to the expander. The stabilizer for connection will require a wave type.
Diagram with non-reversing starter
Non-reversing starters have often beenmeet. The connection of the start-stop buttons can be made directly via the relay. In this case, triggers do not apply. It should also be noted that the switch can be set via a comparator. In this situation, it will be possible to install the controller. In addition, a stabilizer is installed.
Experts say that the converterapplied bidirectional type. The first contact is connected in the first phase. It should also be noted that the capacitors in the circuit are of capacitive type. The stabilizer will need a single-pole type. If we consider two-channel converters, then only contact expanders are used for them. Switches in this case close to the plate. The first contacts are fed in the second phase.
Application of reversing starters
Connecting start-stop button through reversiblestarters are carried out with converters and without them. If we consider the first option, then the capacitors are used with semiconductor insulators. Directly the winding is used at 15 V. The resistance index on it should be at least 30 Ohm.
The comparator for the switch is used for twooutput. The first contact closes in the first phase. The stabilizer must be in the open state. Some modifications are sold with filters. Also worth noting that there are contactors with unijunction resistors.
Instruction for starters of the PML-1100 series
How to connect the "start-stop" button?It's pretty simple to do through a channel thyristor. Converters for the device are selected for two filters. The average resistance is 55 ohms. Dinistors are allowed to use bidirectional type.
Experts say that contactors are importantcarefully clean. In addition, it should be noted that the conductors should be well insulated. The first contact closes in the second phase. The conductivity of the circuit is on average 4.5. See the Expander when installing a broadband type.
Connection of the modular starter
To modular starters onlywire "start-stop" button. In this case, converters are often used with adapters. The first contact from the switch closes in the first phase. The insulator itself is installed last. The thyristor is applied with a rectifier. However, in this case, much depends on the controller. If we consider the models for three outputs, they have two dinistors. The first contact from the switch closes in the second phase. The stabilizer is installed at the end with one filter.
Starters of open execution
Start-stop button in the housing to the starterOpen type is connected 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 withstand current load.
This parameter is on average 33 ohms.If you install a switch with a three-pin controller, the transceiver is of the multi-channel type. Its conductivity should be approximately 4.5 See Also, 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 isolator is installed behind the expander. If the soldering transceiver is soldered, then for the circuit two filters are used.
Connection of closed-loop actuators
Start-stop button for these startersis installed directly through the relay. Transistors select low conductivity for this purpose. Before connecting the components, the output resistance is tested. The specified parameter in the circuit must 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 in the first phase. The stabilizer for the circuit is used only for a single-pole type. The threshold overload indicator for the presented component is at least 5 A.
Connecting the switch via a unijunction trigger
Untransient triggers have a largeconductivity. Isolators for devices are selected bi-directional type. A simple "start-stop" button is installed directly through the relay. It should also be noted that the device can be installed through the control unit. If we consider a conventional milling machine, then the transceiver is of the single-channel type. The first contact from the switch is fed in the second phase. At this stage of the work, it is important to test the output resistance. At an overload of 3 A conductivity should not exceed 5.5 See.
If semiconductor controllers are used,then the resistance is on average 55 ohms. In addition, it is important to note that contactors are often installed on two outputs. In this situation, the isolator is installed behind the converter. Thus, the overload will eventually not exceed the value of 6 A. Triggers are often applied with the expander. You can connect to them directly.
Using two-jumper triggers
Quite often the "start-stop" button is installedwith two-period triggers. They are connected via a 12-volt relay. The power supply unit is impulse type. The relay can 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 is overheating heavily, then the problem lies in the congestion 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 beconnect only through dinistors. In this case, the modifications are only for three outputs. The isolator is installed at the output of the circuit. In this case, the converter is selected with a bi-directional lock. 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, the adapter can be applied to two outputs. The first contact from the switch closes in the second phase. The resistance should not be more than 30 Ohm.
