Siemens SIPART PS2 6DR50xx Instrucciones de operaciones descargar pdf (Pagina 194)

Alarm, error, and system messages

11.4 Fault correction

SIPART PS2 with and without HART communications

194 Operating Instructions, 09/2007, A5E00074631-07

Fault profile (symptoms) Possible cause(s) Remedial measures

• Positioner remains in "RUN 2". • Transmission ratio selector and

parameter 2

• "YAGL" and the real stroke do not

match.

• Incorrectly set stroke on the lever.

• Piezo valve does not activate.

• Check settings: see leaflet: "Device

view (7)" picture as well as

parameters 2 and 3

• Check the stroke setting on the

lever. See table 2

• Positioner remains in "RUN 3". • Actuator actuating time is too high. • Open the restrictor completely

and/or set the pressure PZ (1) to

the highest permissible value.

• Use a booster if required.

• Positioner remains "RUN 5", does

not go up to "FINISH" (waiting time

> 5 min).

• "Gap" (play) in the positioner -

actuator - control valve system

• Part-turn actuator: check for the

firmness of the grub screw of the

coupling wheel

• Linear actuator: check for the

firmness of the lever on the

positioning shaft.

• Remove any play between the

actuator and the control valve.

Fault table 1

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Siemens SIPART PS2 6DR50xx Instrucciones de operaciones Pagina 194