By Steve Bush 23rd October 2019
Balluff has introduced intelligent absolute linear position sensors.
The family is called BMP and there are a variety of measurable lengths, including: 32mm (BMP0008), 128mm (BMP0002) and 256mm (BMP000J).
Operating from 15 – 30Vdc, resolution is ≤1µm via IO-Link, non-linearity is typically ±250µm, repeatability ±100µm and temperature drift from the end value is ±0.3% mazzimum.
There is also an analogue output than can be switched between 0-10V or 4-20mA.
Size is 17.5 x 9.6mm, by either 42, 138 or 266mm. Mountings are available for T-slot and C-slot extrusions as well as round cylinders. They operate over -25 to +85°C and are sealed to IP67.
With the BMP series, it has sensors that report the absolute position of the integrated moving rod via an IO-Link, as well as information about the sensor status, including: ambient temperature, number of starts and warnings when a configurable limit is violated.
An internal counter monitors operating hours since the last service and since last start-up. “This makes it possible to plan for a possible needed replacement at the next service interval,” said the firm.
It is said to be compatible with virtually all types of movement cylinder. Applications are foreseen in assembly, handling and factory automation.
Sensing is magnetic, non-contact and, claims the firm, wear-free.
“BMP magnetic field positioning system lets you monitor continual work processes reliably and without wear,” said Balluff. “The magnetic field positioning system helps you stay in control of various processes and ensures simultaneous processing of workpieces.”
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