Siemens SIMATIC ET 200SP System Manual page 121

Wiring
6.14 Mounting/disassembly of motor starters
①
②
③
Note
Parking position/OFF
This position is only permissible for maintenance purposes and not for continuous operation.
In this position, dust protection and mechanical durability are not ensured.
If you do not use the motor starter for an extended period, remove it and attach the BU cover
(3RK1908-1CA00-0BP0).
Mount the touch protection cover for the infeed bus on the last BaseUnit.
Note
Touch protection cover for the infeed bus
You will find out how to mount the touch protection cover of the infeed bus on a SIMATIC
ET 200SP motor starter in chapter "Mounting the cover for the 500 V AC infeed bus
(Page 80)".
120
Operating position/READY
The motor starter is firmly locked in the BaseUnit, and all electrical contacts are connected.
Assembly/disassembly position
All electrical contacts are open, and you can use the SIMATIC ET 200SP motor starter in the
BaseUnit, or you can remove it from the BaseUnit.
Parking position/OFF
In this position, you cannot remove the SIMATIC ET 200SP motor starter
from the BaseUnit, but all electrical contacts are open. In addition, you can
open the locking lever on the mechanical rotary interlock in this position,
and fix the position with a padlock (shackle diameter 3 mm). This ensures
the isolating function in accordance with IEC 60947-1.
In the parking position, the motor starter counts as a disconnected element
for the head module. During operation, the parking position is therefore a
hot swapping state. See also Removing and inserting I/O modules/motor
starters (hot swapping) (Page 233)
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ