Allen Bradley 20-750-S PowerFlex 750 Safe Torque Off (STO) Option Module

FAQ

Q1: What is the Allen-Bradley 20-750-S?
It is a PowerFlex 750-Series Safe Torque Off (STO) Option Module.

Q2: What is the main function of the 20-750-S?
It provides a safety function that disables motor torque production without requiring the main drive power to be removed.

Q3: What power supply does the 20-750-S require?
The user I/O safety power supply is 24V DC ±10%.

Q4: What safety level does the 20-750-S support?
It is rated for Category 3, Performance Level e (PL e) and SIL CL3 / SIL 3 applications.

Q5: Which PowerFlex drives are compatible with the 20-750-S?
It is applicable to PowerFlex 750-Series drives, including PowerFlex 755TL, 755TR, 755TM and 755TS drive systems.

Q6: Which option slots can accommodate the 20-750-S?
The 20-750-S can be installed in slots 4 through 8.

Q7: Can multiple safety option modules be installed in the same drive?
No. Rockwell specifies that only one safety option module can be installed in a drive at a time.

Q8: What are the dimensions and weight of the 20-750-S?
The supplied dimensions are 120 × 90 × 25 mm, with a weight of 0.05 kg.

20-750-S Allen Bradley

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