Honeywell RM640, Handbook

Page: 91 / 184

OPERATION
6
91
RM640
www.honeywellprocess.com 34-VF-25-131 iss.1 GLO Feb 2019 US
C4.1.3 100% Range Give a measurement value to 100% output
(refer also to menu item C4.1.1 Current Out.
C4.1.1 Current Out. C4.1.1 Current Out.
C4.1.1 Current Out.
1 Var 1 Var 1 Var 1 Var for the output function). 100% output =
20 mA. It is possible to have an output more
than 20 mA (>100%) if you set C4.1.4 Current
Out. Range to "3.8-20.5 mA".
Minimum access level to change the
Minimum access level to change the Minimum access level to change the
Minimum access level to change the
setting: setting: setting: setting: Expert
min-max:
-4.9
+06
...+5.1
+06
mm /
-192.91
+03
...+200.79
+03
/
-16076...+16732 ft
C1.2 Tank
Height - C1.5
Blocking
Distance
1
C4.1.4 Current Out.
Range
This menu item sets the limits of the output
current range to 1 of 4 available options:
standard limits (4...20 mA), NAMUR NE 43-
compliant limits (3.8...20.5 mA), reversed
standard limits and reversed NAMUR NE
43-compliant limits. You use standard limits
when you want the 0% output to be 4 mA and
the 100% output to be 20 mA. You use
reversed limits when you want the 0%
output to be to be 20 mA and 100% output to
be 4 mA.
Minimum access level to change the
Minimum access level to change the Minimum access level to change the
Minimum access level to change the
setting: setting: setting: setting: Expert
4-20 mA, 3.8-20.5 mA
(NAMUR), 4-20 mA
(reversed), 3.8-20.5 mA
(reversed)
4-20 mA
1
C4.1.5 Error Function This sets the behaviour of current output 1 if
an error occurs. If this menu item is set to
"Off", no signal is given (this parameter is
not available if menu item C4.1.4 is set to
"3.8-20.5 mA" (NAMUR) or "3.8-20.5 mA
(reversed)"). If this menu item is set to
"Hold", the output current stays at the value
where the error occurred (this parameter is
not available if menu item C4.1.4 is set to
"3.8-20.5 mA" (NAMUR) or "3.8-20.5 mA
(reversed)"). If this menu item is set to
"Low", the output current changes to 3.5 mA
(default value) if an error occurs. If this
menu item is set to "High", the output
current changes to 21.5 mA (default value) if
an error occurs. You can change the low
error current value in menu item C4.1.7. You
can change the high error current value in
menu item C4.1.8.
Minimum access level to change the
Minimum access level to change the Minimum access level to change the
Minimum access level to change the
setting: setting: setting: setting: Expert
Off, Low, High, Hold Hold
1
C4.1.7 Low Error
Current
This menu item is available if C4.1.5 Error
Function is set to "Low". You can change the
value to which the current output will
change if an error occurs.
Minimum access level to change the Minimum access level to change the Minimum access level to change the Minimum access level to change the
setting: setting: setting: setting: Expert
min-max:
3.5...3.6 mA
3.5 mA
C4.1.8 High Error
Current
This menu item is available if C4.1.5 Error
Function is set to "High". You can change
the value to which the current output will
change if an error occurs.
Minimum access level to change the Minimum access level to change the Minimum access level to change the Minimum access level to change the
setting: setting: setting: setting: Expert
min-max:
21.0...21.5 mA
21.5 mA
C4.1.9 Trimming
C4.1.9.2 4mA Trimming Use this menu item if the current output of
the device is set to 4 mA, but the measured
loop current is not 4 mA. Enter the
measured value.
Minimum access level to change the Minimum access level to change the Minimum access level to change the Minimum access level to change the
setting:
setting: setting:
setting: Expert
min-max:
0.0...25.0 mA
4 mA
Menu No. Function Function description Selection list Default