SICK PBS Manual De Instrucciones página 37

Operating Instructions
Please verify in advance if pressure is being applied (valves/ ball valve etc. open) and if the right
voltage supply and the right type of wiring (3-wire) has been chosen?
Failure
No output signal
No output signal
No/False output signal
Output signal unchanged after change in
pressure
Abnormal zero point signal
Signal span too small
Signal span too small
Signal span drops off
Signal span dropping off/too small
If the problem persists, contact our sales department.
Non risk declaration (Contamination declaration for returned goods)
Purge / clean dismounted instruments before returning them in order to protect our employees and
the environment from any hazard caused by adherent remaining media.
Service of instruments can only take place safely when a Product Return Form has been submitted
and fully filled-in. This Return Form contains information on all materials with which the instrument
has come into contact, either through installation, test purposes, or cleaning. You can find the
Product Return Form on our internet site ( www.sick.com).
8013154/UP90/2015-03-30
9. Trouble shooting
Possible cause
Cable break
No/incorrect voltage supply or current
spike
Incorrectly wired
Mechanical overload through overpres-
sure
Overload limits exceeded
Mechanical overload through overpres-
sure
Power supply too high/too low
Moisture present (e.g. at the cable tail)
Diaphragm is damaged, e.g. through
impact, abrasive/agressive media; corro-
sion of diaphragm/pressure connector;
transmission fluid missing.
© SICK AG • Germany • All rights reserved • Subject to change without notice
Procedure
Check connections and cable
Adjust the voltage supply to correspond
with the Operating Instructions
Follow pin assignment (see Instrument
Label / Operating Instructions)
Replace instrument; if failure reoccurs,
consult the manufacturer
Ensure permissible overload limits are
observed (see Operating Instructions)
Replace instrument; if failure reoccurs,
consult the manufacturer
Correct the power supply in line with the
Operating Instructions
Install the cable correctly
Contact the manufacturer and replace the
instrument
PBS
37