Siemens SIMATIC Power Line Booster Operating Instructions Manual page 44

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Plant planning
3.4 System limits
Example 3 (PSS application with PLB connection cable ≤ 1 meter and lifter)
Based on example 1, a lifter is now going to be added to the communication area at the line
start. This rail section is connected to the main segment using a TC module (see Special
case: Connection via TC module (Page 42)).
For the master position, you must take into account the rule for the Interruptions of the
communication rail (Page 40) as well as the shift of the master position due to the special
case "Connection via TC module (Page 42)".
Reduction due to the interruptions of the communication rail:
A segment with a lifter consists of two separate rail segments (2 • 7% = 14%). Besides, the
lifter must be connected using a cable of individual length because the 8 m cable is not
sufficient (10% reduction).
→ Number of stations reduced by (14% + 10%) • 40 vehicles = 9.6 vehicles.
Due to the installation in front of the PLB master, the attenuation resulting from the lifter of
about 10 vehicles only affects this area.
This means the maximum number of vehicles between master and segment start is 16
vehicles (see example 1) – 10 vehicles = 6 vehicles.
Reduction due to connection via TC module:
Because the lifter must be fed in via a TC module, the maximum number of vehicles
permitted between master and the incoming vehicle is
40% - 25% = 15%.
→ The maximum distance from the PLB master to an incoming vehicle is 15% • 40 vehicles =
6 vehicles
The result of both rules is that no more than 6 vehicles in total may be in front of the master,
regardless of whether the vehicles are parked on the lifter or not.
44
Operating Instructions, 11/2019, A5E36203125A-AG
Power Line Booster

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