Siemens Simatic RTU303xC Series Operating Instructions Manual page 72

Connecting up, installation, commissioning
3.5 Installing an RTU
Table 3- 1
Step
Mounting the extension board (optional)
Note
Insert and remove only when power to the RTU is off
The extension board cannot be inserted or removed during operation of the RTU. This could
result in damage to the RTU. The RTU only checks whether the card is inserted during
startup.
72
Procedure for installation
Execution
1 Remove the covers on the left-hand side of the
RTU.
When using more than one battery module remove
the covers of all battery modules with the exception
of the cover of the battery module on the far left.
1. Insert the tip of a slotted screwdriver in the gap
above the cover.
2. Lever the cover carefully out of its holder.
3. In every battery module you use insert the sup-
plied 12-pin adapter in the right socket.
Note:
At this time do not put any batteries in the bat-
tery modules. See section Commissioning and
starting up the RTU (Page 84) for information
on this.
2 Secure the DIN rail in the protective housing.
3 Snap the RTU and the battery modules to the left
of the RTU onto the DIN rail.
4 Push the battery modules (left) and RTU (right)
together carefully until the side contacts between
the RTU and all battery modules are fully closed.
Notes and explanations
Recommendation: Store the covers
in a safe place in case they need to
be used later.
Use a 35 mm DIN rail.
Operating Instructions, 06/2019, C79000-G8976-C382-06
RTU303xC