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Reference Manual
IP2013, Rev BA
February 2012
Mobrey MSP422
4-8
NOTE:
The MSP422 transmits nominally at once per second. Therefore, a damping
time of zero will not necessarily give an immediate response.
NOTE:
See Figure 4-1 on page 4-3 for a map of the programming menu structure and
how to access all the menu options.
To change the output damping:
a) If entering the menu system from the PV display, press the green button
repeatedly until the “d” menu option is indicated (see above note.)
b) Press the blue button
to enter the menu “d”. The display indicates the
present damping value.
c) If this value is correct, press the red button
and then the green button to
get to the next menu option.
d) Press the blue button
to start editing. The first digit flashes to indicate it
can be edited.
e) Press the green button
repeatedly to edit the flashing digit.
f) Press the blue button
to select the next digit. The digit flashes to
indicate it can be edited.
g) Repeat steps (e) and (f) until the last digit is flashing, and edited as
required.
h) Press the blue button
to confirm the new damping value. None of the
digits should now be flashing.
i) If the new value is correct, press the red button
to save. The display
changes to the next menu option.
j) If the new value is incorrect, press the blue button
to exit to the menu.
The “d” re-appears; re-start at step (b) or press
for the next menu.
Selecting the Action on
Alarm Condition
Screen display: AL
Default: Hold
The transmitter signals an alarm condition if the target echo is lost for more
than 10 seconds.
There are three options for an alarm condition:
Hi The current on the two-wire loop will increase to 21 mA and remain
there until a correct target echo is recovered. The display flashes
alternately “LE” and the alarm action.
Hold The current will freeze at the value it was last reading and remain
there until a correct target echo is recovered. The display flashes
alternately “LE” and the last valid reading.
Lo The current on the two wire loop will decrease to 3.6 mA and remain
there until a correct target echo is recovered. The display flashes
alternately “LE” and the alarm action.
NOTE:
See Figure 4-1 on page 4-3 for a map of the programming menu structure and
how to access all the menu options.