Siemens SINAMICS G220 - Safe Direction (SDI)

r9722.0...15 SI status signals 
c10035 SI SSM input terminal 
14.12.5.5 Safe Direction (SDI)
Overview
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Figure14-235 Overview SDI
With Safe Direction (SDI), the converter monitors the direction of motion of the motor. If
the motor moves in the inhibited direction, then the converter stops the motor with an
SDI-speci󹪝c stop response.
The following SDI variants are available, depending on the direction of motion:
• SDI positive (SDI+)
• SDI negative (SDI‑)
Description of function
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Figure14-236 SDI+ with tolerance violation and direction of movement monitoring
Action Motor/converter response
① Selection of SDI+
• The converter detects the selection of SDI+.
• The converter starts the SDI delay time (p9565).
Functions
14.12Safety Integrated
SINAMICS G220 converter
676 Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB