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Port 22X1:
STO interface (optional)
The STO interface is optional and must be specified explicitly with the order.
The safety function "Safe Torque Off" is used if separation from the mains is
required to prevent an unexpected start-up. By means of this function, the energy
supply of the motor can be safely interrupted. In this case, the drive cannot
generate any torque / force and thus no dangerous movements.
The safety function "Safe Torque Off" corresponds to stop category 0
according to IEC 60204-1.
For the use of the STO function there are several connection possibilities with
different safety levels. Please also refer to chapter 14.2.3 of the operating
instructions for frequency converters, series EFC x610, see chapter 1.2
"Required and amending documentation".
Bosch Rexroth offers suitable cables in different lengths.
For a complete list of accessories, see data sheet 51055, see chapter 1.2
"Required and amending documentation".
▶ Assign the mating connector for the "Safe Torque Off" safety function as
shown in Fig. 18.
-STO
+EXT
-22X1
Fig� 18: Assignment of port 22X1: STO interface
+
24VDC
STO1
STO2
-
1
2
3
4
5
RE 51055-B, Edition 07.2022, Bosch Rexroth AG
Assembly | CytroPac
6
7
8
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