Engineering Units - Siemens SIREC D Handbuch

Programming
G. Programming Filter -
smoothes noisy or erratic signals by attenuating the
effects of sudden transitions. The digital filter is
programmable from 0 to 30 seconds in one second
increments (nominal).
1. Setting Up Filter Seconds - Use the UP (↑) or
DOWN (↓) Arrow Keys to scroll through the menu
items in the Point Setup Menu and highlight "Fil-
ter". Press ENTER and the display reads "sec-
Î Í
onds XX .
2. Use the numeric keypad to enter the required
number of seconds (maximum 30) then press
ENTER to return to the "Filter" menu item.
H. Engineering Units -
character alphanumeric engineering units message
may be assigned for voltage and current inputs to
identify the point, e.g. PSI or mADC
1. Programming Engineering Units - Use the
UP (↑) or DOWN (↓) Arrow Keys to scroll through
the menu items in the Point Setup Menu to high-
light "Eng units". Press ENTER and the display
Î
reads "units XXXXX
2. Use the alphanumeric keypad to enter up to
five characters for desired Engineering Units then
press ENTER to return to the Point Setup Menu.
I. Alarms -
Refer to Paragraph 4.6.14 for
instructions on programming alarms.
J. Chart Scale -
Each point must be assigned to
a Chart Scale. The chart scale is used to control the
display of the output signal and can be used to
display or record only part of the output, the area of
interest, across the entire range. There are two sets
of eight Chart Scales available. Multiple points can
be assigned to a single Chart Scale.
1. Programming Chart Scale - Use the UP (↑) or
DOWN () Arrow Keys to scroll through the menu
items in the Point Setup Menu and highlight
"Chart scale". Press ENTER and the display
reads "chart scl= X".
2. Use the UP (↑) or DOWN (↓) Arrow Keys to
select the Chart Scale numeral. When the desired
numeral is displayed, press ENTER and the dis-
play returns to the "Chart scale" menu item in the
Point Setup Menu. To leave the programming
menu, press EXIT until the Main Button Bar is
displayed.
4-24
The digital filter
A maximum five-
Í
".
4.6.6 Dry Contact Point Range.
Dry Contact Point Range type allows a point to be
programmed and detect an open or closed contact.
The input can be a set of potential free contacts.
Logically an open contact is equal to 0 (zero) and a
closed contact is equal to 1.
A. Programming -
selected as Linear, use the UP (↑) or DOWN (↓)
Arrow Keys to highlight "Dry contact" as the linear
type and press ENTER. The display will show a
reduced Point Setup menu - the Dry Contact Point
Setup Menu. You can then set the following
parameters:
•
Point tag
•
Eng units
•
Alarms
•
Chart Scale
B. Setting Common
Engineering units, Point tag and Chart Scale are
programmed in the identical manner to the other
linear inputs referred to above.
C. Dry Contact Point Type Alarms -
Type and Delay can be set up for each Dry Contact
point. Several options are available as indicated
below.
1. Dry Contact Alarms Programming - From the
Dry Contacts Point Setup menu use the UP (↑) or
DOWN (↓) Arrow Keys to highlight "Alarms".
Press ENTER and the display shows the Alarm
options menu.
2. Alarms Limits Option - Use the UP (↑) or
DOWN (↓) Arrow Keys to scroll through the menu
items in the Alarms Options Menu and highlight
"Alm limits". Press ENTER and the display reads
"alarm #? X".
3. Select Alarm Number - Use the UP (↑) or
DOWN (↓) Arrow Keys to scroll through the alarm
numbers (1 - 5) to select the alarm number. When
the desired Alarm Number is displayed, press
ENTER.
Siemens AG C79000-G7374-C211-01
The
Once a point has been
Parameters
Alarm
SIREC D Manual
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