#2 piezo crystal wiring diagram Pc#
#2 piezo crystal wiring diagram series#

For the piezo switches with prolonged signal, the signal is passed on for the duration in which the switch is pressed (max. Piezo switches usually have a short closing pulse which depends on the activating force, duration and speed. Increased ease of use is offered for the piezo switches by the prolonged signal version from SCHURTER. The relays on the SCHURTER power card allow higher voltages, currents and powers to be used and significantly extend the range of applications of the piezo switches. With the SCHURTER power card, which is connected directly to the piezo switches, large powers can also be switched. High capacity with the SCHURTER power card: the small design of the piezo switches only allows the switching of small signals or powers in general. Plug-compatible adapters are available for the MCS 19 to achieve rational wiring of components. Further country-specific programming can be realised according to customer requirements ex works.ĭepending on the version, AT PS/2 or USB connections are available as ports with mini-DIN or USB connectors.ĭepending on the design, the switches are available with quick connect terminals, flexible wires, pins or clip for pins.

#2 piezo crystal wiring diagram Pc#

The PC keypads are available with a corresponding keypad decoder and can therefore be used as standard in German, British and U.S. The metallic panel keypads are designed with an XY matrix. Sie gebe die Einsatzbereiche, in denen der PSE EX zugelassen ist, an.Ĭonnecting technology and switching options What does the information in the approvals mean? Installation in accordance with IEC / EN 60079-14 and IEC / EN 60079-25. Operation approval expires on removal of the type label. The permissible operating temperature is -20☌ to +60☌. The explosion-proof PSE is classified according to EN 60079-0 in the device group II, category 2. The PSE EX has a high degree of security that is also effective at common equipment malfunctions or errors. The use of the PSE is therefore permitted only in areas where the formation of explosive atmospheres caused by gases, fumes, mist or dust mixing with air occurs occasionally. The electrical characteristics are listed under Specifications. The permissible voltage and current of the PSE EX switch are limited, so that the PSE EX is intrinsically safe in accordance with EN60079-11. The explosion-proof piezo switch PSE EX has the function of a NO switch (normally open / NO). Switching between colors can be achieved by appropriate activation.Īnnotation for the Protection of Piezo Switch PSE EX

When illuminating the PSE switch, either a single-color LED (2 pins) is used or a bi-colored LED (3 pins). Ring Illumination Special Type 5 VDC - on request

#2 piezo crystal wiring diagram series#

Ring Illumination for M22 series - 12 / 24 VDC with Plug Connector Ring Illumination for M22 series - 12 / 24 VDC with Wires Ring Illumination for M24, M27, M30 series - 12 / 24 VDC Only group 2 is activated → Ring has green illuminationīoth groups are activated at the same time → Ring has orange illumination Only group 1 is activated → Ring has red illumination When equipped with two colors, it is possible to either switch between the colors or to achieve a combination color, depending on the type of activation.įor example: Diodes of group 1 = red and diodes of group 2 = green Single or bi-colored ring illumination is possible for the PSE switches.

This corresponds in principle to the function of a conventional NO pushbutton switch.įunctional Description Piezo Switches Illumination When actuating the piezo disc, the resistance between terminals 3 and 4 is therefore changed from high resistance → low resistance → high resistance. When the piezo disc is actuated, the initial switch resistance is reduced to < 20 Ohm. In the neutral position of the piezo switching element, the terminals 3 and 4 are non-conductive, and initial switch resistance is > 10 MOhm. The integrated switching element controls the electric circuit to be switched. If a pulse is applied to the piezo disc, terminal 1 becomes positive in relation to terminal 2 due to the voltage generated. This can be either direct voltage (DC) or alternating voltage (AC). The electric circuit to be switched is connected at the terminals 3 and 4.

The piezo disc is connected to the terminals 1 and 2. The period that the electronic switch contact remains closed depends on the actuating speed and force as well as on the duration of actuation. After this, the electronic switch contact opens again, even if the force is still present. The voltage generated is converted by the electronic connection into a polarity-neutral, electronic switch contact.ĭuring the voltage drop, the electronic switch contact is closed for the specified pulse duration. The action of force on the piezo disc causes a voltage to be induced due to a charge transfer. The piezo switch is based on the functional principle of the piezoelectric crystal.