Inductive Proximity Switches SIMATIC PXI
Instinctive Response to Metal
When identifying metal objects without contact, inductive proximity switches are simply the most cost-effective solution. If an electrically or magnetically conductive object approaches or leaves, they automatically send out a signal change. Inductive proximity switches are extremely reliable with a high repeat accuracy. And thanks to wear-free operation as well as resistance to temperature, noise, light or water, they have a markedly long service life. We cover the complete application spectrum with a large variety of designs and transmission ranges.
Highlights
Extremely compact and rugged
High degree of protection (IP67/IP68/IP69K)
Correction factor 1
High sensing ranges
Fast switching frequencies
Flexible mounting
Especially suitable for small spaces
UL/CSA approvals
Function
A high-frequency alternating field is generated in the proximity switch and emerges at the "sensing face". The physical size of this alternating field determines the "range" of the device. When a material that is a good conductor of electricity and/or magnetism comes into close proximity with the sensing surface, the field is damped. Both states (field damped or undamped) are evaluated in the proximity switch and result in a change in the output state of the switch.
Built-in protection
Spurious switch-on pulse
Short-circuit and overload (DC)
Swapped connectors
Wire-break (connection L- or L+)
Overvoltage peaks
Radio interference
Spurious signal suppression
Classification
The inductive proximity switches are classified in accordance with their applications or their technical characteristics:
for standard duty
for PLCs (2-wire)
for extra duty
for extreme environmental conditions (IP69 K)
with greater operating distance
without a reduction factor
pressure-resistant up to 500 bar (7250 psi)
with analog output