Siemens SIPART Series Operating Instructions Manual page 92

Connection
5.1 Electric
Procedure
The NCS is equipped with a shielded four-pole cable. Wire this cable to the positioner as
follows:
1. Feed the four-pole NCS cable
type of cable gland depends on the positioner version.
2. Tighten the cable gland
3. Terminate the four-pole NCS cable
diagram.
4. Place the cable clamp
5. Use the screw
ground terminal of the positioner.
6. Grounding:
The rear steel panel of the NCS is inevitably bonded to ground potential of the system by
mounting the console. This ground connection is only functional if there is a low-
impedance connection to ground potential of the system. Ensure this state by measuring
ground resistance. If necessary, ensure proper grounding by means of an additional
cable from the NCS to ground potential.
5.1.6 Connecting the external position detection system to the EMC filter module
Requirements
You need the EMC filter module with Order No. C73451-A430-D23 for the electrical
connection of an external position detection system C73451-A430-D78, an external
potentiometer, or an NCS sensor to the positioner.
Note
Different cable glands
A blue and a gray cable gland are provided to distinguish between explosion-proof and not
explosion-proof devices.
• Use the blue cable gland for explosion-proof devices in "intrinsically safe" protection type.
Use the gray cable gland for all other designs.
90
⑩
through the union nut and the cable gland. Note: The
⑨
.
⑩
⑦
onto the outer insulation of the four-pole NCS cable
⑧
to bond the cable shielding lug
in the positioner in accordance with the wiring
⑫
and the cable clamp
SIPART PS2 with and without HART
Operating Instructions, 10/2013, A5E00074631-11
⑩
.
⑦
to the