ABB C1900RC, Руководство по эксплуатации

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14
Faceplate 2 only
LOCAL
110.5
rAtIO
1.000
bIAS
0.0
dUAL
CASCdE
or
or
100.3
dEG F
100.3
r50.0
PrG 1
rAMP
100.3
110.3
Profile Option
tIME
12:00
Timer Option
or
No additional options
LOCAL dUAL
CASCdE
rEMOtE
Displayed only if enabled in
the
Set Up Operating Page,
CONTROL CONFIGURATION
LEVEL
rEMOtE
bALNCE
LOCAL
…5 CONTROL OPERATION
…5.2 Operating Page Displays
Process Variable
Temperature Units
The units are set in the
BASIC CONFIGURATION LEVEL.
Display is blank if '
NONE
' is
selected.
Set Point Type Selection
The
Balance
displays show the difference between the
Local
and
Second
set point values (remote, dual or cascade) when switching
from local to second set point, i.e.
Balance = Second set point – Local set point.
If the difference is too great, press the key to return to the
Control Set Point
frame and adjust the Local set point to obtain an
acceptable difference.
If remote set point tracking is enabled (
Set Points Page, CONTROL
CONFIGURATION LEVEL
), the local set point tracks the remote set
point when the remote set point is selected.
The key (if programmed in the
ADVANCED CONFIGURATION LEVEL
) can also be
used for
Local
/
Second
set point selection, but transfer takes place without display of
the Balance value , i.e.
Remote (or Cascade) Set Point Ratio
The remote (or cascade) set point input (in engineering units) is multiplied by the ratio
to obtain the control set point value, i.e.
Remote (or cascade) Set Point Value = Input x Ratio + Bias
Use the and keys to set the ratio required, between 0.010 and 9.999 in 0.001
increments
Remote (or Cascade) Set Point Bias
The bias value is added to the remote (cascade) set point value (see previous frame)
Use the and keys to set the bias required.
The bias can be set to either a positive or negative value (in engineering units).
Continued on next page.