LiteOn EVO 6800 Series - Page 84

84
■ PID Block Diagram
Frequency Reference
1~16
Terminal A1 / A2
Terminal Up/Down
Modbus
Communication
Modbus register
Pulse Input
PID Target
( b5-18 )
Pulse Input
Terminal A1 / A2
Pulse Input
Terminal A1 / A2 Terminal A1 / A2
PID Set Point
( U4-03 )
PID Differential
Feedback
( U4-04 )
PID Feedback
( U4-00 )
PID Feedback 2
( U4-05 )
D
P
-1
PID輸入
( U4-02 )
I
Z
-1
D
b5-07
-1
b5-09
b5-06
PID Output
( U4-02 )
Output Frequency
B5-14
B5-15
Frequency Reference
( b1-00 / b1-07 )
0 1 2 3 4
Frequency Reference
PID Target PID Feedback
b5-00 = 3 or 4
PID Mode
b5-00 = 1 or 2
1 0
not 1 not 2 not 3
b5-17 = 1 E5-00 = 2 E3-01/07 = 9
0 not 1 not 8
E5-00 = 1 E3-01/07 = 8
E3-01/07 = 10
0
not 10
- +
Z
-1
+
-
Derivative Time ( D )
( b5-04 )
2 or 4
1 or 3
+
+
+
-
PID control selection
( b5-00 )
PID Soft Starter
( b5-16 )
ON OFF
PID SFS Cancel DI
( E1-_ _ = 50 )
PID disable when： 1. b5-00 = 0 2. a JOG Command is Input 3. PID Disable by Digital Input Enabled
+
+
Disabled Enabled
+
-
Sleep Function
Sleep Level
Delay Timer
Run ON/OFF
SFS
C1-_ _
PID Input Limit
( b5-21 )
Proportional Gain ( P )
( b5-01 )
0
1
PID Input Characteristic
( E1-_ _= 50 )
or
( b5-08 )
0 1
0 1
+ +
Z
-1
+ +
+
1 or 3
2 or 4
0 1
+ +
0 1
I-time ( I )
( b5-02 )
Integral Hold
( E1-_ _= 48 )
I-limit
( b5-03 )
Integral Reset
( E1-_ _= 47 )
Derivative Time ( D )
( b5-04 )
+
-
PID control selection
( b5-00 )
PID Output Upper/Lower
( b5-05/b5-20 )
PID Delay Time
PID Output Characteristic
( b5-08 )
PID Offset
PID Output Gain
B5-10 is always 1 when b5-
00 = 3/4
Enable / Disable Reverse
Operation when PID
Output is Negative
Lower Limit 0
Lower Limit Fmax x109%
Upper Limit Fmax x109% Upper Limit Fmax x109%
Figure 6.17 PID Block Diagram