Commissioning Of Ncs; Prerequisites / Default Settings - Siemens SIPART PS2 Series Operating Instructions Manual

External position detection
B.2 Non-Contacting Sensor
Procedure
The NCS sensor is equipped with a shielded 4-pin cable. Connect this 4-pin cable to the
positioner as follows:
1. Feed the 4-pin NCS cable
cable gland depends on the positioner version.
2. Tighten the cable gland
3. Connect the 4-pin NCS cable
accordance with the wiring diagram.
4. Place the cable clamp
5. Use the screw
terminal of the positioner.
6. Grounding:
The rear steel panel of the NCS sensor is inevitably bonded to the ground potential of the
system when mounting on the console. This ground connection is only functional if there is
a low-impedance connection to ground potential of the system. Ensure this connection by
measuring the resistance. If necessary, ensure proper grounding by means of an additional
cable from the NCS sensor to ground potential.
B.2.4

Commissioning of NCS

B.2.4.1

Prerequisites / default settings

1. Supply electrical and pneumatic auxiliary power to the positioner. The top row of the display
shows the current sensor voltage (0 to 100%), while the "NOINI" info flashes in the bottom
row. The pneumatic actuator does not move.
2. If the positioner has already been initialized, perform a reset. Carry out the reset of
parameter group "Init" in the '50.PRST' Preset (Page 160) parameter.
3. Preset for part-turn actuators:
While the process valve is closed, align the magnet so that the north pole is in the direction
of the cable; "N" in position
holder made of glass fiber reinforced polyester (left figure) or anodized aluminum (right
figure) (Page 274)".
4. Monitor the display of the positioner while adjusting the actuator to its mechanical stops by
means of
range from P2.0 to P98.0.
Note
This condition cannot be met with slipping flaps or linear actuators that exceed the
mechanical actuation limits.
282
⑩
through the union nut and the cable gland. Note: The type of
⑨
.
⑩
to the Analog Input Module (AIM) of the positioner in
⑦
onto the outer insulation of the 4-pin NCS cable
⑧
to bond the cable shielding lug
⑦
in "Figure B-4 Mounting on part-turn actuator with magnet
and at the positioner. Verify that the displayed values never exceed the
⑫
and the cable clamp
SIPART PS2 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E00074631-AE
⑩
.
⑦
to the ground