Siemens Simovert Masterdrives Compendium page 50

Configuration and Connection Examples
2-22
The safety relay circuit including its internal layout is always identical.
This means that the same circuit principle can be applied on all unit
types. However, the terminal designations differ according to the unit
type.
Terminal strip
-X533
1 2 3
P15
Supply to
optocouplers/
FOC
Fig. 2-8 MASTERDRIVES Compact PLUS, STO control, schematic diagram
Terminal
4
3 Control input "STO"
2
1
4
Designation
P24 DC
Contact 2
Contact 1
6SE7087-6QX70 (Version AM)
Compendium Motion Control
12.2010
Description
Supply voltage for
"safety relay"
Rated resistance of operating
coil
≥ 823 Ω ± 10 % at 20 °C
Checkback "STO"
Checkback "STO"
Siemens AG
SIMOVERT MASTERDRIVES