EasyManua.ls Logo

Siemens SITRANS SL - Page 21

Siemens SITRANS SL
28 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
Device-specific Safety Instructions
Safety Manual
Operating Instructions, 06/2012, A5E03433511-05
19
Table 3- 3 Proof test part 3 (only required if external sensors are used)
Step Action
1 Bypass the safety PLC or take another appropriate action to avoid a false trip.
2 Select analog input test for Analog Temperature using LUI (local user interface).
3 Connect a calibrated current source, e.g. a loop calibrator, to the analog input 0 for temperature.
Note: the current measuring instrument used for this test shall provide an accuracy of 0.1 % or better.
4 Apply at least the following currents in succession: 4.0 mA, 20.0 mA, and a current value within this
interval to the analog input. The indicated measured values [mA] shall not deviate more than 0.5 % from
the applied current.
5 Select analog input test for Analog Pressure using LUI.
6 Connect a calibrated current source, e.g. a loop calibrator to the analog input 1 for pressure.
Note: the current measuring instrument used for this test shall provide an accuracy of 0.1 % or better.
7 Apply at least the following currents in succession: 4.0 mA, 20.0 mA, and a current value within this
interval to the analog input. The indicated measured values [mA] shall not deviate more than 0.5 % from
the applied current.
8 Restore the loop to full operation.
9 Remove the bypass from the safety PLC and restore to normal operation.
Table 3- 4 Proof test part 4
Step Action
1 Bypass the safety PLC or take another appropriate action to avoid a false trip.
2 Unlock the LUI using the service password (Security menu).
3 Select analog output test / analog output 0 using LUI.
4 Connect a calibrated current measuring instrument with loop powering capability, e.g. a loop calibrator, to
the analog output 0.
Note: the current measuring instrument used for this test shall provide an accuracy of 0.1 % or better.
5 Set at least the following currents in succession: 4.0 mA, 20.0 mA, and a current value within this interval
to the analog output. The measured current shall not deviate more than 0.5 % from the set current.
6 Select analog output test / analog output 1 using LUI.
7 Connect a calibrated current measuring instrument with loop powering capability, e.g. a loop calibrator, to
the analog output 1.
Note: the current measuring instrument used for this test shall provide an accuracy of 0.1 % or better.
8 Set at least the following currents in succession: 4.0 mA, 20.0 mA, and a current value within this interval
to the analog output. The measured current shall not deviate more than 0.5 % from the set current.
9 Restore the loop to full operation.
10 Remove the bypass from the safety PLC and restore to normal operation.

Other manuals for Siemens SITRANS SL

Related product manuals