Siemens siprotec SJ62 User Manual page 158

Logic
Figure 2-51 Logic diagram of the Motor Starting Time Supervision
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015
2.8 Motor Protection (Motor Starting Protection 48, Motor Restart Inhibit 66)
Motor starting protection may be switched on or off. In addition, motor starting protec-
tion may be blocked via a binary input which will reset timers and pickup annuncia-
tions. The following figure illustrates the logic of motor starting protection. A pickup
does not create messages in the trip log buffer. Fault recording is not started until a
trip command has been issued. When the function drops out, all timers are reset. The
annunciations disappear and a trip log is terminated should it have been created.
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