Siemens – 6SE7090‑0XX84‑3DB0 – Simov ért Masterdrives Digital Tachometer

The Siemens 6SE7090‑0XX84‑3DB0 is a Digital Tachometer Interface (DTI) designed for Simov ért Masterdrives control modules. It converts HTL/TTL encoder signals into standardized 24 V DC tachometer outputs essential for closed-loop motor control. Though discontinued on January 5, 2011, it’s still available as a factory spare; its successor is 6SE7090‑0XX84‑3DB1.  

 Key Features

• Item: 6SE7090‑0XX84‑3DB0 (SIMOVERT MASTERDRIVES DTI)  

• Function: Converts encoder feed (HTL/TTL) to 24 V logic speed feedback for Masterdrives

• Compatible With: CUVC, CU2, CU1, and FC (frame 6) control heads in Masterdrives systems  

• Power Requirements: External 15 V DC internal supply, requires external 24 V DC @ 160 mA tach supply

• Signal Range: Supports HTL/TTL up to typical encoder frequencies—clockwise and counter-clockwise detection

• Physical Specs: DIN-rail/card interface, approx. 0.5 kg in Germany-made housing