Position 3; Position 5 - Siemens sitrans lc 300 Instruction Manual

Down •
Button
•
Both •
Buttons

Position 3

Position 3 displays the Analog signal as it is set for the loop current. The Up and Down
buttons set the system fault protection settings (according to NAMUR NE 43). System
fault protection is used by D.C.S. equipment to determine whether or not the LC 300 is
presenting a reliable signal.
When a system fault occurs:
Position 3 Fault
Protection Setting
C:Hi
C:Lo
C:An
Display •
•
Up •
Button
•
Down •
Button
•
Both •
Buttons
1.
System errors that would trigger a fault are a checksum error, an absence
of measurement signal, or a primary variable beyond 1.66 pF (low) or
3300 pF (high).
7ML19985HE01
Pressing Down button for less than 1 second decreases the URV in
the current step size (initially 0.01 pF).
When held for more than 1 second, the Down Button will increase
the step size by 0.1, 10, 100, and 1000. When no button is pressed for 4
seconds, the step size decreases to the next smallest value.
Pressing both buttons for more than 1 second sets the URV to the
current PV value.
Menu 3 LCD Display
22 mA
3.6 mA
mA value at time of fault
LCD shows the Analog Signal as it is set for the loop-current in mA.
Normal primary variables would give mA values between 3.8 mA
(lower saturation point) and 20.5 mA (upper saturation point).
When the reading goes above the URV or below the LRV but still
within the measurement range of the unit, it will remain at 20.5 or 3.8
respectively until the level returns between URV and LRV.
Pressing the Up button for less than 1 second shows the system fault
protection setting.
Holding the Up button for longer than 1 second will change the fault
protection setting to C:Hi.
Pressing the Down button for less than 1 second shows the system
fault protection setting.
Holding the Down button for longer than 1 second will change the
fault protection setting to C:Lo.
Pressing both buttons for more than 1 second disables the system
fault protection and the LCD will read C:An.
SITRANS LC 300 – INSTRUCTION MANUAL
Current Signal to
D.C.S
22 mA
3.6 mA
none
1
Menu 0 reading
pF reading
alternating with FLT
pF reading
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