Hitachi SJ Series, User Manual

Page: 259 / 786

12-10-4
Chapter 12 Inverter Functions
12.10.2 Use PID1
• PID1 can receive 3 inputs together with PID target
value/PID feedback value.
• Check the following schematic diagram.
Block diagram of PID1 control
• PID gain 1 and 2 can be switched by the input
terminal function [PRO].
• PID1 output can be used as a target value of PID2.
A
[PRO] terminal
+
P control
I control
D control
+
+
Proportional gain 1
Proportional gain 2
Integral gain 1
Integral gain 2
Differential gain 1
Differential gain 2
OFF
OFF
OFF
ON
ON
ON
PID target value 1
PID target value 2
PID1 target value 1
Operator selection [AH-50]
+(01), -(02),
×(03), ÷(04)
Minimum deviation (05)
Maximum deviation (06)
PID feedback data 1
PID feedback data 2
+
00
01
PID1 deviation
minus 1
[AH-02]
-
PID1 control
00
01
PID1 selection
[AH-01] 0 command
02
PID output command
PID feed-forward selection
+ +
I control integral value clear [PIDC]
PID feedback
Comparison signal [FBV]
PID deviation excessive
[OD]
01
PID1 feed
Back value 1
Operator selection [AH-54]
+(01), -(02),
×(03), ÷(04),
Square root of FB1 (05)
Square root of FB2 (06)
Square root of FB1 - FB2
(07)
Average (08)
Minimum (09)
Maximum (10)
01
[AH-07]
[AH-42]
[AH-51]
[AH-52]
[AH-61]
[AH-70]
×(-1)
[AH-64]
[AH-62]
[AH-65]
[AH-63]
[AH-66]
[FA-30]
[FA-32]
[db-30]
[db-32]
[db-51]
[db-64]
[db-62]
[db-63] [db-61]
[db-50]
PID target value 3
[AH-44]
[FA-34]
PID feedback data 3
[AH-53]
[db-34]