Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 178)

4-18
IM 04L31A01-01E
Setup Items
Setting Control Input Range Parameters
• Loop number (control input channel when the PV/SP computation function is ON)
When the PV/SP computation function is OFF, you can set each setting item of the control
input range for each loop. When the PV/SP computation function is ON, you can set each
setting item of the control input range 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.
• Input type (when PV/SP computation function is OFF)
Select the target input for making input range related settings from the following.
PV1, PV2, RemoteSP, and PVrange
• Items [PV2] and [PVrange] appear only when [Control] > [#1 Control action, Input
setting] > [Control mode] is set to [PVSwitching]. If the measurement range of the
two input signals is different for the loop control with PV switching, make sure to
select [PVrange] to determine the PV range.
• Item [RemoteSP] appears only when [Control] > [#1 Control action, Input setting] >
[Program control] is set to [Off] and [Control] > [#2 Contact input-registration/AUX(Alarm
mode...)] > [Remote setting] is set to [Remote]. For [PVSwitching], [RemoteSP] is
selectable only on odd-numbered loops. In addition, for cascade control, item [RemoteSP]
does not appear for the settings of the loop number of the secondary loop.
• Mode/Type/Range (setting when [Input type] is set to a type other than [PVrange])
Select the input mode [Mode] from [TC], [RTD], [Scale], and [1-5V]. Then, set other
items such as [Range] and [Span Lower/Upper-limit] according to the selected mode.
• When set to TC (thermocouple)
Range Selectable Measurement Span Range
R 0.0 to 1760.0 °C
S 0.0 to 1760.0 °C
B 0.0 to 1820.0 °C
K –200.0 to 1370.0 °C
E –200.0 to 800.0 °C
J –200.0 to 1100.0 °C
T –200.0 to 400.0 °C
N 0.0 to 1300.0 °C
W 0.0 to 2315.0 °C
L –200.0 to 900.0 °C
U –200.0 to 400.0 °C
PLATI 0.0 to 1400.0 °C
PR 0.0 to 1900.0 °C
WRe 0.0 to 2400.0 °C
• When set to RTD (resistance temperature detector)
Range Selectable Measurement Span Range
Pt100 –200.0 to 600.0 °C
JPt100 –200.0 to 550.0 °C
Note
• The CX2000 converts the measured value to a value obtained by removing the decimal point
from the value range specified by [Scale Lower] and [Scale Upper]. In other words, if the [Scale]
setting is [–5] to [5], the value is converted to a value within the span of “10”; if the [Scale] setting
is [–5.0] to [5.0], the value is converted to a value within a span of “100.” In this case, the resolution
of the value converted to a span of “10” is lower than the value converted to a span of “100.”
• If you change any of the parameters [Mode], [Type], [Range], [Span Upper/Lower-limit],
[Scale Upper/Lower-limit], or [PV range Lower/Upper-limit], the following setup items (parameters
set using engineering units “EU” or “EUS”) related to these settings will be initialized.
Bias, alarm, SP ramp-down-rate, SP ramp-up-rate, reference point, switching hysteresis,
reference deviation, PID parameters, SP, relay hysteresis, ten-segment input, ten-
segment output, SP low-limit, SP high-limit, alarm hysteresis, and boundary of partial
expanded display.
4.6 Control input range