Siemens SINAMICS G120C Function Manual

6.8 Safe Direction (SDI)
6.8.1 Overview
What can you find in this Chapter?
The relevant operating cases for the SDI function are described in this chapter.
Table 6-9 Response of the SDI function when the motor is switched on (ON/OFF1 = 1)
Selecting and deselecting
SDI
Selecting and deselecting SDI when the motor is switched on
(Page 282)
Discrepancy in the input sig‐
nal
The fail-safe digital input to select SDI identifies an error.
Response to a discrepancy when Safe Direction is active (SDI)
(Page 288)
Limit value violation The motor rotates in the monitored direction.
Limit value violation when Safe Direction (SDI) is active
(Page 290)
Table 6-10 Switching the motor on and off when SDI is active or not active
Switching on the motor (ON/OFF1 =
0 → 1)
Switching off the motor (ON/OFF1,
OFF2 or OFF3 = 1 → 0)
SDI is not active If SDI is not active, then there are no restrictions for switching on and switching off
the motor.
SDI is active If your application requires that SDI al‐
ways remains active, then you must take
into account several special issues when
switching on the motor.
Switching on the motor when SDI
is active (Page 285)
The drive response depends on the sig‐
nal that you use to switch off the motor.
Switching off the motor when SDI
is active (Page 283)
Operation
6.8 Safe Direction (SDI)
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD 281

Siemens SINAMICS G120C Specifications

General

Brand	Siemens
Model	SINAMICS G120C
Category	Inverter
Language	English