Mitsubishi Electric FR-D720S SC EC, Инструкция по эксплуатации, Страница: 412 / 512

Special operation Parameter
6 - 262
Dancer roller position detection signal adjustment
When terminal 4 input is voltage input, 0V is minimum position and 5V (10V) is maximum
position. When current is input, 4mA is minimum position and 20mA is maximum position (initial
value). When 0 to 7V is output from the potentiometer, it is necessary to calibrate C7 (Pr. 905)
at 7V.
After changing the current/voltage input switch to "V", set "2" in Pr. 267 to change terminal
4 input to voltage input.
Input 0V to across terminal 4 and 5 to calibrate C6 (Pr. 904). (% display displayed at analog
calibration is irrelevant to % of the feed back value.)
By inputting 7V to across terminal 4 to 5, calibrate C7 (Pr. 905). (% display displayed at
analog calibration is irrelevant to % of the feed back value.)
Set 50% in Pr.133.
쑶
I001843E
Fig. 6-135: Dancer roller position detection signal adjustment
Example
쑴
Control at a dancer center position using a 0 to 7V potentiometer
NOTE
When the Pr. 267 setting was changed, check the voltage/current input switch setting. Differ-
ent setting may cause a fault, failure or malfunction. (Refer to page 6-148 for setting.)
Feedback value
Potentiometer, etc.
Lower limit
position
Upper limit
position