Siemens SIPART PS2 Bedienungsanleitung Seite 16

Option modules in "flameproof enclosure" version
The following option modules are available:
● Position feedback module
● Alarm module
● Internal NCS module
3.7.1 Internal NCS module
The internal NCS module is used for wear-free position detection and is an optional equipment version in the positioner. The
internal NCS module is installed as an alternative to position feedback module at the same slot in the positioner.
4 Connecting
4.1 Basic safety instructions
WARNING
Improper power supply
Danger of explosion in hazardous areas as result of incorrect power supply, e.g. using direct current instead of alternating
current.
Connect the device in accordance with the specified power supply and signal circuits. The relevant specifications can
•
be found in the certificates, in Chapter "Technical data (Page 43)" or on the nameplate.
WARNING
With intrinsically device version (Ex i)
Risk of explosion in hazardous areas.
For intrinsically safe device versions only the certified circuits may be connected as auxiliary power supply, control and
signal circuits.
Make sure that the power source of the used circuits is marked as intrinsically safe.
•
WARNING
Unsafe extra-low voltage
Danger of explosion in hazardous areas due to voltage flashover.
Connect the device to an extra-low voltage with safe isolation (SELV).
•
WARNING
Connecting device in energized state
Danger of explosion in hazardous areas.
Connect devices in hazardous areas only in a de-energized state.
•
Exceptions:
Circuits of limited energy may also be connected in the energized state in hazardous areas.
•
Exceptions for type of protection "Non-sparking nA" (Zone 2) are regulated in the relevant certificate
•
WARNING
Lack of equipotential bonding
Danger of explosion through compensating currents or ignition currents through lack of equipotential bonding.
Ensure that the device is potentially equalized.
•
Exception: It may be permissible to omit connection of the equipotential bonding for devices with type of protection
"Intrinsic safety Ex i".
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SIPART PS2 (6DR5...)
A5E03436620-07, 10/2015