Filter
Top Products
39
Reference Manual
IP2048/RM, Rev AA
Section 4: Starting up
February 2015
4.2.14 Selecting the alarm condition action
Screen display: AL
Factory default value: Hold
The MSP400RH and MSP900GH can signal an alarm condition if the target echo is lost for 900
seconds or more. The 900 seconds is factory set and is changeable in the field.
There are three actions to choose from:
Hi The current on the two-wire loop increases to 21 mA. The current stays at that level
until the correct target echo is recovered. The display flashes alternately “LE” and the
last PV.
Hold The current freezes at the last PV value and stays frozen until the correct target echo
is recovered. The display flashes alternately “LE” and the last PV.
Lo The current on the two-wire loop decreases to 3.6 mA. The current stays at that level
until the correct target echo is recovered. The display flashes alternately “LE” and the
last PV.
Note
This menu option is in the programming menu. See Figure C-1 on page 76 for a map of
the menu structure and how to access the menu options.
To change the selected action
1. If entering the menu system from the PV display, press the green button repeatedly
until the “AL” menu option is indicated (see above note.)
2. Press the blue button
to enter the “AL” alarm menu and display the selected action.
3. If the selected action is correct, press the red button
to exit to the menu. (The menu
option “AL” re-appears. To get to the next menu, press
.)
4. Press the blue button
to start the editing mode. The selected action flashes to
indicate it can now be edited.
5. Press the green button
repeatedly to scroll through the list of actions (see above).
6. Press the blue button
to confirm the new action. (The flashing stops).
7. If the new action is correct, press the red button
to save. The display changes to the
next menu option.
8. If the new action is incorrect, press the blue button
to exit to the menu.
9. The menu “AL” re-appears to re-start at step (2) or press
for the next menu.