Siemens SIPART PS2 6DR5 Series Compact Operating Instructions page 24

Connecting
4.1 Basic safety instructions
Maximum AC/DC switching voltage with UL approval E344532
Mechanic Limit Switches (MLS) 6DR4004-6K/-8K are approved for use with positioners with
UL approval. The maximum switching voltage in this case is ≤ 30 V AC/DC.
If switching voltages greater than 30 V are connected, the UL approval for the positioner
becomes invalid.
Two-wire mode
NOTICE
Connection of voltage source to current input
Device damage if a voltage source is connected to the current input I
● Never connect the current input I
● Always use a high-impedance power source.
● Observe the static destruction limit specified in the "Electrical data (Page 66)".
See also
Electrical data (Page 68)
Note
Improvement of interference immunity
● Lay signal cables separate from cables with voltages > 60 V.
● Use cables with twisted wires.
● Keep device and cables at a distance from strong electromagnetic fields.
● Take account of the conditions for communication specified in the Technical data
(Page 57).
● Use shielded cables to guarantee the full specification according to HART/PA/FF/Modbus/
EIA-485/Profibus DP.
24
CAUTION
positioner may be destroyed.
to a low-resistance voltage source, otherwise the
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Compact Operating Instructions, 09/2019, A5E03436620-AE
(terminals 6 and 7).
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SIPART PS2 (6DR5...)