Power Supply/Sto - Siemens SINAMICS V90 Operating Instructions Manual

Connecting
4.4 24V power supply/STO
4.4 24V power supply/STO
Pin assignment
Interface Signal name
Maximum conductor cross-section: 1.5 mm
Wiring
Material damages and personal injuries by the drop of a hanging axis
When the servo system is used as a hanging axis, the axis will drop if the positive and
negative poles of the 24 V power supply are connected inversely. Unexpected drop of the
hanging axis may cause material damages and personal injuries.
Make sure that the 24 V power supply is correctly connected.
Material damages and personal injuries by the drop of a hanging axis
It is not allowed to use the STO with a hanging axis because the axis may drop.
Unexpected drop of the hanging axis may cause material damages and personal injuries.
Note
Using the STO function
The STO1, STO+ and STO2 are short connected at the factory setting.
When the STO function is to be used, you must remove the short-circuit stick before
connecting the STO interfaces. If you do not need to use it any more, you must reinsert the
short-circuit stick; otherwise, the motor will not run.
For detailed information about the STO function, refer to "Safety Integrated basic functions
(Page 243)".
124
STO 1 Safe torque off channel 1
STO + Power supply for safe torque off
STO 2 Safe torque off channel 2
+24 V Power supply, 24 VDC
M Power supply, 0 VDC
WARNING
WARNING
Description
2
Remarks
-
-
-
Voltage tolerance:
Without brake: -15% to +20%
•
With brake: -10% to +10%
•
Maximum current consumption:
1.6 A without brake power supply
•
3.6 A with brake power supply
•
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 09/2015, A5E36037884