SIGMATEK ST 151, Manual

Page: 16 / 48

ST 151 S-DIAS STEPPER MOTOR OUTPUT STAGE
Page 14 02.12.2019
3.4 STO Enable Input Specifications
Number 2
Input voltage +24 V DC
Input voltage range m18 V m30 V
Signal level
low: ≤ +5 V high: ≥ +15 V
Switch hysteresis typ11 V
Input current 3 mA at +24 V
Input delay typically 0.5 ms
Safety Level complies with the requirements of Category 4, Performance Level "e"
according to EN ISO 13849-1 and SILCL 3 according to 62061
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 gener-
ate torque.
3.5 Latch/Digital Input Specifications
Number 2
Input voltage typ24 V m30 V
Signal level low: < +8 V high: > +14 V
Switch hysteresis typ11 V
Input current 3.7 mA at +24 V
Input delay typically 10 µs