Response Time And Process Safety Time (Pst) - Harmony eXLhoist User Manual

Safety

Response Time and Process Safety Time (PST)

Overview
The maximum Process Safety Time (PST) of STOP function is 550 ms according to IEC 60204-32
Ed.2 §9.2.7.3. This PST of 550 ms is taken into account for all safety functions. The PST allocation
is:
So 250 ms are allocated for contactors / drives of the hoisting system. The rest (300 ms) is
allocated for Wireless Remote Control System. In consequences, the maximum response time of
the Wireless Remote Control System is 300 ms for all safety functions in any configurations.
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