We had an enquiry from a customer running a motor feedback application on a Profinet network. They needed an absolute encoder that could give the PLC the exact shaft position on power-up, without any battery backup, and they wanted a single encoder that could handle multi-turn tracking as well, not just single-turn position.
This is where Hengstler’s ACURO AC58 comes in, in the Profinet variant. It is a single-turn and multi-turn absolute encoder using optical scanning, so the position reading stays accurate and repeatable even after long service life. Resolution goes up to 34 bits in total (22 bits single-turn, 12 bits multi-turn), though the exact figure depends on the interface used. It is built compact at 50 mm long, available in solid shaft or hollow shaft versions, and is rated for a broad ambient temperature range of -40 to +100°C, which suits most factory floor and outdoor installations in Malaysia. It also carries high EMC compatibility, which matters when the encoder cable runs near VFDs or other noisy equipment.
From our experience, before we quote this, we would normally check the shaft type needed (solid or hollow), the exact mechanical mounting arrangement, the required resolution and multi-turn range, and the cable length and connector type on site. Feel free to send us your Profinet network details and mounting drawing, and we can confirm the right part number. Hope this helps.
