Type Flat Proximity Switch TL-PP702 Features Two-wire DC proximity switch with built-in connector. 4 mm in thickness. Prevention of connector disconnection and improvement of insertion easiness achieved with the use of compatible positive lock connector. Principle of operation An impedance change in the detection coil of the high-frequency electronic oscillator allows a metallic object to be detected. Metal ball Type Magnetic flux TL-PP702: Standard frequency type Coil Core Specifications Rating/performance Item Detection distance (*1) 5.0 to 6.2 mm Hysteresis (*2) 0.2 to 2 mm Distance setting 4.0 mm or less (*3) Object to be detected Metal ball (11 0.05 mm) Power voltage 12 DCV 10 %, 15 DCV 10 %, 18 DCV 10 %, 24 DCV 10 % Leakage current (*4) 0.2 to 1.0 mA Residual voltage (*5) Under power voltage 12 DCV: 5.4 to 7.0 V, Under power voltage 15 DCV: 5.4 to 7.0 V Under power voltage 18 DCV: 5.4 to 7.0 V, Under power voltage 24 DCV: 5.4 to 7.0 V Load resistance Under power voltage 12 DCV 10%: 680 (-5%) to 1.1 k (+5%) Under power voltage 15 DCV 10%: 1.1 k (-5%) to 1.6 k (+5%) Under power voltage 18 DCV 10%: 1.5 k (-5%) to 2.2 k (+5%) Under power voltage 24 DCV 10%: 2.2 k (-5%) to 3.6 k (+5%) Way of operation Metal ball present: Output transistor OFF Metal ball absent: Output transistor ON Response frequency 100 Hz or more Ambient temperature When in operation: -10 to 60 deg C (must be free from freezing or condensation) When stored: -20 to 70 deg C (must be free from freezing or condensation) Ambient humidity 25 to 85% RH Effect of temperature Within the temperature range of -10 to 60 deg C, the rate of change in the detection range must be within 20% relative to the range provided at 23 deg C. Effect of voltage Within the 10% variation in the rated voltage, the rate of change in the detection range must be within 5%. *1, 2. The detection distance and hysteresis are as shown below. L: Hysteresis L: Detection distance Figure 2 Output transistor Detection face Detection face Figure 1 *3. The setting must allow metal balls to pass through the space within 4 mm from the detection face of the proximity switch. *4. Leakage current refers to the current that runs through the proximity switch when the output transistor is off. *5. Residual Voltage refers to the voltage at both ends of the proximity switch when the output transistor is on. 1 TL- PP702 Output circuit diagram Operation chart Load resistance Present Metal Proximity ball Power switch Absent supply main circuit Output transistor * Load resistance can be connected to either + or side. Data of characteristics Characteristics of leakage current Under power voltage Characteristics of leakage current Under power voltage 18 V 10% and 24 V 10% (Typical example) 12 V 10% and 15 V 10% (Typical example) Load resistance Load resistance Load resistance Load resistance Power voltage V Power voltage V Characteristics of residual voltage Under power voltage Characteristics of residual voltage Under power voltage 18 V 20% and 24 V 10% (Typical example) 12 V 10% and 15 V 10% (Typical example) Load resistance Load resistance Load resistance Load resistance Power voltage V Power voltage V * Load resistance refers to the load resistance shown in the above output circuit diagram. Precautions for use <Effects of metallic objects in the vicinity> When arranging a metallic object near the proximity switch, ensure the distances greater than the ones shown in the following figures. (1) Along the side of case: (2) Over the top or under the bottom of case: Iron plate of 1.0 mm in thickness Iron plate of 1.0 mm in thickness * Iron plate shall be 16 mm x 30 mm. Detection face The switch does not malfunction when a metal ball comes into contact with it. However, avoid using the switch with the metal ball kept in contact with it. 2 Leakage current mA Residual voltage V Residual voltage V Leakage current mA