Siemens SIMATIC ET 200SP HA, System Manual

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Note
● The L+ terminals on the potential distributor are intended exclusively for the sensors
connected to the I/O module using a 2-wire connection system.
● You may not use these terminals as voltage source for other devices in the system.
Recommendation: Use terminal blocks with potential distributors
The following terminal block should be used to connect sensors with two wires:
Article No. Function/parameter
1)
6DL1193-6TP00-0DP0 Allow new potential group (light terminal block)
6DL1193-6TP00-0BP0 Use potential group of the left module (dark terminal block)
1)
Make sure that this parameter is enabled in HW Config starting with the commissioning.
Table 4-8 Benefits of potential distributors compared to using external power supply units
Advantage with terminal block with potential dis‐
tributor
Disadvantage without potential distributor
The L+ terminals on the potential distributor are
connected individually using automatic circuit
breakers to a maximum of 20 mA.
In the event of a short-circuit or overload, "only" the
affected channel fails.
No separate protection
Short circuit or overload affects the entire system.
Plant planning
4.7 Configurations of the slots of I/O modules
ET 200SP HA Distributed I/O system
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System Manual, 08/2019, A5E39261167-AD