100
SC-F70
SC-F70
PID Operation Operating Instructions
7.7 External Analog Input Problems
When operation is correct in LOC mode, but analog input operation does
not work in REM mode using external analog input, refer to this guide.
1. Ensure your controller is equipped with the remote
analog input feature.
Model code = SC-F70- *A
The second-to-last digit should be an A.
2. Check that the settings in all items of the parameter
PG05 and PG06 are correct. See page 75 and 76.
3. Measure the voltages of the contacts on the back panel
terminals.
∑
If the code is different, this
function cannot be used.
12
13
14
15
16
Di1
COM
(-)
0-5V,1-5V
0-10V,0-20mA
4-20mA
Between terminal 12 and 13.
Between terminal 15 and 16.
Type
For DC 0 - 5V
For DC 1 - 5V
For DC 0 - 10V
For 4 - 20mA
For 0 - 20mA
Voltage
DC 0 - 5V
DC 1 - 5V
DC 0 - 10V
DC 1 - 5V
DC 0 - 5V
Instructions:
1. Measure between COM and Di1 while opening or
closing the contact point.
2. Measure the voltage between terminal 15 and 16
while varying the analog value.
For analog input in DC current, measure it in DC
voltage range.
∑
If the measured voltages for the
point and the analog input are
adequate, have the controller
serviced.
∑
If any measured voltages are
inadequate, have the external
analog input device or cables
serviced.
Action
Analysis
More than DC 5V
Less than DC 2V
Contact open
Contact closed
∑
If the settings are incorrect,
correct them.