Siemens SINAMICS G220 - Page 665

Description of function
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Figure14-227 Flow diagram Safe Stop 1 with time control (SS1-t)
Action Motor/converter response
① Selection of SS1
• The converter detects selection of SS1 and signals the status
"SS1 active" (r9722.1).
• The converter starts the transition time SS1 to STO (p9556).
• The converter stops the motor along the OFF3 ramp. Stopping
along the OFF3 ramp is not monitored.
• Deselecting SS1 after the time ① does not interrupt the stop‐
ping of the motor.
② Transition to STO
• The transition time from SS1 to STO (p9556) has elapsed.
• The converter activates STO and signals the status "STO active"
(r9722.0) and the status "SS1 active".
• The converter activates STO even if SS1 is deselected in the
meantime.
• STO interrupts the torque-generating supply of energy to the
motor and prevents the motor from restarting.
• The motor coasts down to a standstill.
③ Deselection of SS1
• The converter detects deselection of SS1.
• The converter deactivates STO.
④ Signal change at ON/OFF1
from 1 to 0
• The converter is ready to start again.
Parameters
The following list contains the parameters of the "Safe Stop 1 with time control (SS1-t)" function.
Functions
14.12Safety Integrated
SINAMICS G220 converter
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB 663