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Safe Torque Off (STO)
to protect against active movement of the drive
The PM240‑2 Power Modules, frame sizes FSD to FSG, offer additional terminals to achieve STO acc. to IEC 61508 SIL 3 and EN ISO 13489‑1 PL e and Category 3.
Safe Stop 1 (SS1)
for continuous monitoring of a safe braking ramp
Safe Brake Control (SBC) is used to safely control a holding
brake. When enabled, SBC is always activated at the same time as STO. The Safe Brake Relay is used for SBC.
Extended Safety functions (certified according to IEC 61508 SIL 2 and EN ISO 13849‑1 PL d and Category 3)
Safely-Limited Speed (SLS)
for protection against dangerous movements on exceeding a speed limit
Safe Direction (SDI)