Mitsubishi Electric FR-A800, Instruction Manual

Page: 725 / 1042

Parameters (A) Application parameters
FR-A800 5 - 545
●
The display of the following parameters is changed according to the C42 (Pr. 934)), C44 (Pr. 935),
Pr. 1136, and Pr. 1138 settings.
Example
쑴
Set the following:
Pr. 934 = "500", 20% (4 mA is applied), Pr. 935 = "100", 100% (20 mA is applied).
When the set point=400 and the measured value = 360, the deviation is +40 (>0), but the inverter
recognizes the deviation as –10% (<0). Because of this, operation amount does not increase in the
reverse operation setting.
The operation amount increases when the forward operation is set.
To perform PID output shutoff release at deviation of +40 or higher, set Pr. 577 = "960".
쑶
Pr. Name Pr. Name
131 PID upper limit 1143 Second PID upper limit
132 PID lower limit 1144 Second PID lower limit
133 PID action set point 755 Second PID action set point
553 PID deviation limit 1145 Second PID deviation limit
577 Output interruption cancel level 1149 Second output interruption cancel level
761 Pre-charge ending level 766 Second pre-charge ending level
763 Pre-charge upper detection level 768 Second pre-charge upper detection level
Tab. 5-231: Influence of C42 (Pr. 934)), C44 (Pr. 935), Pr. 1136, and Pr. 1138 on other parameter displays
0
100%
500
20%
100
400
360
(0%) (25%) (35%) (100%)
+40
Deviation
Set point
Measured value
* ( ) indicates the deviation value
which the inverter can recognize
Deviation –10 %