Proximity Switch Testing

A proximity switch will be in its normal status when it is distant from any detectable object.

Proximity switch testing.

Testers for proximity and photoelectric switches verify the signal output type of dc switches a red light indicates npn and a green light indicates pnp. When this field is interrupted by a conductive object moving into the field the switch will detect this and cause a contact closure or opening based on the type of proximity switch. A proximity switch is one detecting the proximity closeness of some object. Pocket sized sensor tester with push type terminals makes wire connections quick and easy.

The test voltage is typically 100 volts. For technical drawings and 3 d models click on a part number. By definition these switches are non contact sensors using magnetic electric or optical means to sense the proximity of objects. Grounding hsi sensing can check a proximity sensor that contains a wire connected to the metal housing.

Allows for fast field checks troubleshooting and or demonstration of 10 30 v dc sensors with a maximum sensor current draw of 100 ma. Confirms operation of inductive photoelectric capacitive and ultrasonic sensors. Insulation resistance this test measures the dc resistance across the open contacts measured in ohms with an ohm meter and the switch in a de energized state. The proximity switch usually has 3 specific wires going to the switch.

Dc 2 3 or 4 wire type sensors. The proximity switch generates a small radio frequency field. Make sure to put the machine in e stop when testing the switches or solenoids manually to check there diagnostics.