5.6 Output manipulated variable indication
Name and Description
Output manipulated variable indication
•
In the PV/SV display mode, press the
key for approx. 3 seconds.
Keep pressing the
key until the output manipulated variable shows up, though the main
setting mode appears temporarily during the process.
(The SV display indicates output manipulated variable and the 1st decimal point from the right
blinks in a 0.5 second cycle)
If the
key is pressed again, the mode reverts to the PV/SV display.
6. Converter function
Caution
• When using this controller as a converter, take 1 second into consideration since input/output
response time is approx. 1 second.
• When switching from converter function to controller function, the control parameter and values
set by converter function are held even if the function is switched to controller function.
So, correct the control parameter and values which are set by converter function to the value
necessary for the controller function after switching to the controller function.
The converter function of this instrument converts each input (thermocouple, RTD, DC voltage and DC
current inputs) value to “4 to 20mA DC” and outputs it using the control parameter of the controller.
When this instrument is used as a converter, follow the process (1) to (7) described below.
After the process (1) to (7) is finished, this instrument can be used as a converter.
(1) Wire and connect this controller (Power, Input and Output).
(2) Turn the power of this controller ON.
(3) Bring up “Auxiliary function setting mode 2” by pressing the
and
key (for approx. 3s).
(4) Select the sensor type from “Input type selection (
)”.
(5) Set the high limit of the value that is going to be converted during “Scaling high limit setting (
)”.
(6) Set the low limit of the value that is going to be converted during “Scaling low limit setting (
)”.
(7) Select converter (
) from “Control/ Converter function selection (
)”.
• To activate the alarm action by Converter function, set the alarm action to Process alarm action.
If converter function is selected from “Controller/Converter function selection” in Auxiliary function
setting mode 2, the parameter below is automatically set. (Table 6-1)
However, this is applied only to the DC current output type.
(Table
6-1)
Setting item
Setting value
Setting item
Setting value
SV
Scaling low limit Alarm setting
0
Proportional band
100.0%
Loop break alarm action time 0 seconds
Integral time
0 seconds
Loop break alarm action span 0
Derivative time
0 seconds
Direct/Reverse action selection Direct action
Manual reset setting
0.0
7. Running
After mounting and wiring in the control panel (DIN rail) are finished, running is started in the following
manner.
(1) Turn the power supply to the KT7 Series ON.
For approx. 3s after power is turned on, the character of the sensor type and temperature unit are
indicated on the PV display, and the rated maximum value is indicated on the SV display.
See [Table 5-1].
(If any other value is set in the scaling high limit value setting, SV display indicates it)
During this time, all outputs and LED indicators are in OFF status.
After that, PV display indicates actual temperature and SV display indicates the main setting value.
(2) Input each setting value.
Input each setting value, referring to “5. Setup”.
(3) Turn the load circuit power ON.
Starts the control action so as to keep temperature of the controlled object at the main setting value.
Summary of Contents for KT7
Page 3: ...contact with the controller...
Page 15: ......
