Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 176)

4-16
IM 04L31A01-01E
4. Press the DISP/ENTER key to confirm the changes.
The boxes for the items you changed turn from yellow to white, and the cursor
returns to the first item.
Saving the Settings
1. Press the ESC key .
The display returns to basic setting menu.
2. Press the [End] soft key .
A confirmation dialog box appears
3. Select [Yes] and press the DISP/ENTER key .
The operation screen is displayed.
Setup Items
Setting Tuning Parameters
• Loop number
The parameters to be tuned are set for each loop. When changing these parameters,
this setting is used to select the target loop number [1] to [6] (initial value is 1). The
loop number is displayed for the number of loops you specified at the time of
purchase.
• On/Off
Set the parameters that are to be displayed on the tuning display to [On]; set the
parameters that are not to be displayed to [Off].
• Item name
Under the initial settings, the tuning parameters are set as follows. The numbers
indicate the order of items on the tuning display starting from the upper left corner.
The characters indicate the item names (tuning parameter name). In addition to the
tuning parameters below, [DR] (control direction), [H] (relay hysteresis), BS1
(measured value 1 input bias), FL1 (measured value 1 input filter), BS2 (measured
value 2 input bias), FL2 (measured value 2 input filter), RT (ratio setting), RBS
(remote input bias), RFL (remote input filter), and W01-W36 (control computation
constant) are available. BS1-W36 is valid if the main unit is style number S3 or later.
01: SP (target setpoint)
08: D (derivative time) 15: Off
02: A1 (alarm value 1) 09: OH (High limit of the output limiter) 16: Off
03: A2 (alarm value 2) 10: OL (Low limit of the output limiter) 17: Off
04: A3 (alarm value 3) 11: MR (manual reset) 18: Off
05: A4 (alarm value 4) 12: PO (preset output) 19: Off
06: P (proportional band) 13: Off 20: Off
07: I (integral time) 14: Off 21: Off
Select the [Item ID] from the 21 parameters listed above. [Item name] is a name that
can be assigned to each parameter. You can use up to 6 alphanumeric characters to
specify a name. Under initial settings, [Item name] is set to the save character as the
item ID.
Note
• The tuning parameters for external loops using Green series communications are set
using [Control] > [#6 Exteral loop setting] > [3# Tuning setting]. External loops have two
tuning parameters in addition to those listed above: [DB] and [ETC]. Furthermore, the
register address, the upper and lower limits of value range, and the decimal point position
can be changed for each tuning parameter in addition to the name.
• BS1, FL1, BS2, FL2, and RFL cannot be selected when the PV/SP computation is ON.
4.5 Control > Tuning setting