Theory:Electromagnetic Relay Usage:PCB Protect Feature:Seal type Contact Load:10A 250VAC/15A 125VAC
The circuit board relay is a miniaturized electronic control device, in which the circuit board makes the circuit miniaturized and intuitive, which plays an important role in the mass production of fixed circuits and the optimization of the layout of electrical appliances. The relay has a control system (also known as an input loop) and a controlled system (also known as an output loop), which is usually used in automatic control circuits. It is actually a kind of “automatic switch that uses a smaller current to control a larger current. “. Therefore, it plays the role of automatic adjustment, safety protection and conversion circuit in the circuit.
1.High-quality plastic housing
2.Ideal thickness and hardness
3.Using compound silver contact
4.More stable and accurate pull-in voltage
5.100,000 times of service life
6.Enamelled wire coil
7.Adopt quality enamelled wire coil
8.Better insulation and safer use
1. Strong ability to switch out
2. Has a set of normally open and a set of conversion contact form
3. High voltage resistance between contact and coil
4. With AC voltage input
5. Can bring LED
1. When used in AC inductive loads, high transient voltage and inrush current are applied to the output terminal, so it may cause the solid-state relay to be turned on or damaged. It is usually necessary to connect a voltage control device with a specific clamping voltage to the output terminal, such as Two-wire zener diode or varistor (MOV). The varistor is recommended to take 1.6-1.9 times of the rated voltage;
2. For DC inductive loads, such as solenoids, electromagnets, and solenoid valves, a freewheeling circuit must be used to suppress the back-EMF generated during shutdown. The simpler method is usually to connect a diode in parallel with the load in reverse The circuit will affect the release time of inductive loads such as electromagnetic relays, contactors, electromagnets, solenoid valves, etc. The better circuit is a diode in series with a voltage stabilizing diode or a diode in series with a resistor and then reverse to the load in parallel.
3. When controlling a smaller current load close to the minimum load current, a virtual load resistance must be connected in parallel with the load to reduce the output terminal leakage current and produce a higher residual voltage on the load.
4. When welding and installing the circuit board welding type relay, the welding temperature must be controlled below 260 degrees Celsius, and the welding time should be controlled below 5s.
5. In order to avoid the temperature rise of the solid state relay exceeding the allowable value, the heat dissipation effect and installation position should be considered when designing and applying. When two or more solid state relays are installed side by side, an appropriate spacing should be left.
Widely used in petrochemical instruments and equipment, food machinery, packaging machinery, textile machinery, CNC machine tools, plastic machinery, fitness equipment, entertainment facilities and other automation control fields, can control small motors, incandescent lamps, indicator lights, small power supplies, intelligent instruments Meters and various solenoid valves, etc., can also be used as the driving level of high-power electromagnetic contactors. It is especially suitable for corrosive, damp, dust-proof, explosion-proof and other harsh environments, as well as frequent switching.