Blocksize Power Modules (PM240-2)
4.3 Interface description
SINAMICS S110
82 Manual, 07/2015, 6SL3097-4AC10-0BP5
STO connection via PM terminals
Power Modules PM240-2: FSD and FSE
Via the safety function "Safe Torque Off" (STO), the torque producing energy input to the
motor can be safely interrupted.
For the Power Modules PM240-2 with frame sizes FSD and FSE, this functionality can be
implemented in the hardware via the PM terminals STO_A/STO_B.
However, with SINAMICS S110, "Safe Torque Off" via PM terminals can only be used if the
Safety Integrated functions of the CU305 are deactivated.
Table 4- 12 Terminals STO_A/STO_B for the safety function "Safe Torque Off"
Terminal:
1 STO_A/STO_B Voltage: 24 V DC (20.4 to
28.8 V)
Current consumption: Max.
2 M Ground
Type: Screw-type terminal 2 (Page 263)
Max. cross section that can be connected: 2.5 mm
2
Max. cable length: 30 m (only shielded cables may be used)
Note
Use of the safety function "STO" via PM terminals with SINAMICS S110
With enabled Safety Integrated functions of the CU305, a simultaneously active STO
function via PM terminals causes output of error messages.
Table 4- 13 DIP switches for the safety function "Safe Torque Off" via PM terminals
To use Safety Integrated of the CU305, deactivate the function
"STO via PM terminals" by putting both the DIP switches for the
interface STO_A/STO_B into the "0" position.
To be able to use the "STO via PM terminals" function, deactivate
Safety Integrated in the by putting both the CU305 (parameter
p9601=0) and put both DIP switches for the interface
STO_A/STO_B into the "1" position.
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