Posted to News on 27th Jan 2021, 08:59
New non-contact safety switches
Norstat Inc. is now offering a full range of non-contact, magnetically operated safety switches
The O-Type line of switches from Norstat are available in two versions. The OHE1 is a standalone, non-contact safety switch with 2 OSSD safety outputs and 1NC contact, and is magnetically coded. The ODNK is a standalone, non-contact, RFID safety switch with 2 OSSD safety outputs and 1NC contact. The uniquely coded RFID has a possible 4 billion code combinations and both switches are suitable for series connection of up to 30 switches while still maintaining PL-e.
Norstat says that these O-Type safety switches have been designed for use on applications where guard-locking is not required, and that they are available in either uniquely coded RFID (yellow) or coded magnetic (black). The dual channel OSSD outputs can be used to reach a safety category of CAT4, SIL3, and PL-e. These switches can be used with EDM (external device monitoring), meaning that users can monitor the state of contactors or safety relays in order to detect failure of the external device - thus eliminating the need for a safety monitoring device.
The O-Type safety switches are available with 3, 6 or 10 metre pre-wired cables which are fully sealed and suitable for use in wet or harsh environments ( IP 67 & IP 69K ). The full range of Norstat products can be found here.
