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DM330 Series - Magnetostrictive Level System User's Manual
2.8.2
Optional Housing with Push Buttons
2.8.3
Security Timing Sequence for Loop Configuration of
4mA & 20mA Control Points
2.8.4
Optional Housing with Push Buttons
1.) Power-up the probe
2.) Place float at desired 4mA / 20mA position
3.) Unlock the configuration program by momentarily pressing
the Zero pushbutton (Based on the security timing sequence
in Section 2.8.3)
4.) The 4mA is set by momentarily pressing the Zero pushbutton
(Based on the security timing sequence in Section 2.8.3)
5.) The 20mA is set by momentarily pressing the Span
pushbutton (Based on the security timing sequence in
Section 2.8.3)
6.) Loop configuration is complete
The Security Timing Sequence protects the DM330 Series from
unintentional configuration (Or changes in configuration) of the
4mA & 20mA control points
1.) Power-up the probe
2.) Place float at desired 4mA / 20mA position
3.) Unlock the configuration program by "Shorting" the White
Program Wire (Blue in EU) to the Black Loop "-" Wire for
three (3) seconds. See figure 2-18 for full timing sequence.
4.) Release the Short for three (3) seconds
5.) Set Zero or Span by "Shorting" either the (4mA) Black Loop
"-" Wire (Blue in EU) or by "Shorting" the (20mA) Red Loop
"+" Wire (Brown in EU) to the White Program Wire for two
(2) seconds.
6.) The DM330 Series "Locks" the programming menu after ten
seconds from time of entering the program.
(A.) It will be necessary to enter the Security Timing
Sequence twice to set both 4mA & 20mA control
points
1.) Unlock the configuration program by pressing the Zero
pushbutton for three (3) seconds. See figure 2-18 for full
timing sequence.
2.) Release the Zero pushbutton for three (3) seconds
3.) Set Zero or Span by pressing either the Zero pushbutton or
by pressing the Span pushbutton for two (2) seconds.
4.) The DM330 Series "Locks" the programming menu after ten
(10) seconds from time of entering the program.
a.) It will be necessary to enter the Security Timing Sequence
twice to set both 4mA & 20mA control points
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