Siemens SIPART PS2 6DR50xx Instrucciones de operaciones descargar pdf (Pagina 68)

Connection

6.1 Electrical connection

SIPART PS2 with and without HART communications

68 Operating Instructions, 09/2007, A5E00074631-07

WARNING

Assembling the components

When assembling components, ensure that only those positioners and optional modules

are combined with each other that are approved for the corresponding operating range.

This condition is particularly applicable for the safe operation of the positioner in the areas

of zones 1, 2 and 22, where the atmosphere may be potentially explosive. Observe device

categories 2 and 3 of the device itself and its optional modules implicitly.

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.

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Siemens SIPART PS2 6DR50xx Instrucciones de operaciones Pagina 68