Operating instructions

Connection
6.1 Electrical connection
SIPART PS2 with and without HART communications
72 Operating Instructions, 09/2008, A5E00074631-08
WARNING
Notes on supply cable with auxiliary power
The power supply of the device must be guaranteed by safety extra-low voltage (SELV) for
Ex "tD" (dust) and Ex "nA".
WARNING
Laying of cables
Connect the devices to be operated in hazardous areas according to the regulations for
your country, e.g. secure laying of cables for Ex "d", "nA" and "tD".
CAUTION
The following is applicable for all intrinsically safe versions of zones 2 and 22:
The cable used for electrical connections must be suitable for temperatures that are 5°C
higher than the ambient temperature.
Note
Use in zones 2 and 22
In normal operation, non-arcing resources for zones 2 and 22 may not be connected or
disconnected under voltage.
However, the positioners can be connected and disconnected under voltage when installing
or repairing; refer to the certificate or the manufacturer's declaration for zones 2 and 22.
Note
Installing the optional modules
Install the essential optional modules before connecting the positioner electrically.
Transmission ratio selector
Before closing the module cover of the positioner, check whether the transmission ratio
selector has been set correctly.
Note
Owing the reasons pertaining to tightness (IP enclosure rating) and the required tensile
strength, only use the cables having a diameter ≥ 8 mm for standard M20x1.5 cable gland,
or use a suitable seal insert in case of smaller diameters.
In the NPT version, the positioner is delivered with a coupling. When inserting a counter
piece in the coupling, ensure that the maximum permissible torque of 10 Nm is not
exceeded.