Emerson MSP400RH, IP2046IM manual Loop

Page 28

4.6

Loop Test : See also Appendix A3

“tESt”

The MSP400 has the facility to cycle through it’s programmed operating range without any change in the liquid level, causing the current output and relays to cycle through their normal operation.

Also, the MSP400 can be programmed to fix the loop current at any desired value between 4 and 20mA to allow testing of any other loop or control instruments.

To enter the loop test menu from the normal operating mode, press the blue button to display “diAg” then press and hold the blue button for at least two seconds to display “tESt”.

4.6.1 Cycle function

“CyCLE”

a)Press the green button to scroll down to the “CyCLE” menu.

b)Press the blue button to enter the cycle menu . The display will zero and show “0.0000 m”.

c)Press the blue button to initiate the cycle, and the MSP400 will cycle from the 4mA value to

the max PV value and back to the 4mA value again over about 100 seconds.

Pressing the green button at any time during the cycle will stop the cycle at that point. Press the green button again to continue the cycle.

d)Press the blue button to return to the loop test menu and display “”CyCLE”.

4.6.2 Loop Current fixing

“LOOP”

a)From the Loop test display “tESt” or the cycle display “CyCLE”, press the green button to scroll to the “LOOP” menu.

b)Press the blue button to enter the LOOP menu, and the display will zero to show “0.000”.

c)Press the blue button to start an edit sequence which allows the user to enter a value for the desired fixed loop current. Use the green button to change the digits in the normal manner.

d)Once the desired value is entered, press the blue button to fix and display the loop current.

e)To change the fixed current value to a new value, press the blue button to return to the LOOP menu

Pressing the green button again will return the user to the start of the Loop test menu.

The user may now press the red button to return the instrument to the normal operating mode with the display showing the PV, or may press and hold both the blue and the red buttons together for at least 2 seconds to move to the Engineering set-up menu.

28

IP2046/IM

Nov 2006

 

Image 28
Contents Mobrey Contents Introduction Pvdf Wetside Installation IP2046/IM IP2046/IM IP2046/IM Do not USE Housing to Tighten Ptfe RL1 Spst IP2046/IM Alarm IP2046/IM IP2046/IM Selecting the units of measurement Screen display 20/4 Ullage Liquid level SPEC. P CYL.F Scale LEUEL@ max Maximum flow entry Screen display IP2046/IM IP2046/IM IP2046/IM IP2046/IM IP2046/IM Loop IP2046/IM IP2046/IM IP2046/IM IP2046/IM IP2046/IM IP2046/IM IP2046/IM Duty Appendix A1 Main Menu ProgrammingSEt20 Appendix A1Appendix A2 Diagnostics Menu LeuelLoop Appendix A3 Commissioning / Loop Test MenuEngineering Menu Appendix A4Appendix B Default Value Listing Main Menu Parameters ProFDefault Value Listing Engineering Parameters DEAdAppendix C Listing of NON-LINEAR Profiles in the MSP400 SPEC.CAppendix D Hart Communications with the MSP400 Table of MSP400 Parameters IP2046/IM IP2046/IM Instruction & maintenance leaflet