ST 151
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Catalog excerpts

S-DIAS Stepper Motor Output Stage ST 151 with 1 stepper motor output stage 50 V/5 A 1 brake chopper 1 incremental encoder input RS485/TTL 2 enable inputs with STO function 2 latch/digital inputs The S-DIAS stepper motor output stage allows the connection of 2-phase stepper motors w'th a phase current up to 5 A. The incremental encoder input, which supports RS422 as well as TTL encoders, is pro-v'ded for position feedback. With both enable inputs, the safety function STO is implemented. The 2 latch/digital inputs are prov'ded for the reference motion and monitoring the end positions. Brake Chopper Specifications Number Incremental Encoder Input Specifications Number STO Enable Input Specifications Stepper Motor Output Specifications Number of phases Safety function STO according to EN61800-5-2, section 4.2.2.2 The motor is not supplied with energy, which can cause a turn. The stepper motor output stage does not supply energy to the motor, which can generate torque.

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Latch/Digital Input Specifications Number 2 Input voltage typically +24 V Signal level low: < +8 V Switch hysteresis typically +11 V Input delay typically 10 ps Notes maximum +30 V high: > +14 V Electrical Requirements Motor supply Article Number and Miscellaneous Article number Hardware version Standard Environmental Conditions Storage temperature

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