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b5 PI Function
The capability to accept an analog signal as feedback for a PI (Proportional + Integral) control function is built into the Drive.
D1-04
D1-02
b1-01
4
D1-01
3
Option Card
Serial Com
2
1
1
0
PI Differential
Fdbk. H3-09=16
Terminal A1
MEMOBUS Reg. 06H
PI target value
Constant b5-19
b5-20
Scaling
0
Terminal A1
1
PI Differential
Fdbk. H3-09=16
0
+
Terminal A2
-
1
H3-09=B
PI Feedback 2
(U1-53)
Bypass units are shipped with the parameters in Table 5.1 and Table 5.2 pre-established for the configuration ordered.
To add PI control to a Bypass unit; observe the control options that are included in the unit by review of the model number on
the nameplate (inside of door and external lower right side) as well as the option codes and model number description in
Chapter 1. Then revise the parameter settings indicated in Table 5.3 and 5.4 for a line of data, in Table 5.4, with the same
(or similar) combination of options and sources for the speed and run commands. This will add the logic required for PI con-
trol to that required for Bypass control.
Table 5.3 includes parameters that are the same regardless of control options specified while Table 5.4 provides detail on the
option dependent parameters.
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Frequency Reference
using multi-step
command
Frequency reference
b5-01=0
(U1-01)
Scaling
PI SFS cancel
H1-xx=34
o1-03
1
0
PI SFS
PI control is OFF under the following
b5-17
conditions:
- b5-01=0
- During JOG command input
- H3-xx=19 and the terminal status is
H1
ON
1
0
Reg. 0Fh, bit 1
1
0
PI Set Point
(U1-38)
b5-18
1
0
Scaling
PI Differential
Fdbk. H3-09=16
b5-20
PI Input
PI SFS cancel
Characteristic
Caracteristic
H1-xx=34
H1-xx=35
1
0
+
0
-
Z
-1
PI SFS
1
b5-17
PI Feedback
(U1-24)
Scaling
b5-20
H3-09=16
b5-28
1
0
+
0
1
+
b5-29
1
0
0
1
P
PI Differential
PI Differential
Fdbk. H3-09=16
Fdbk. H3-09=16
PI offset
(b5-07)
Fig 5.13 PI Block Diagram
Programming 5 - 23
Enable / Disable reverse operation
when PI output is negative
b5-01=3
+
b5-01=1
OFF
+
b5-11
ON
PI Input
(U1-36)
I - limit
I-time
b5-04
b5-03
0
0
+
P
1/t
+
1
1
Proportional
gain
Z
-1
Integral Hold
b5-02
Integral Reset
H1-xx=31
H1-xx=30
Sleep function
selection b5-21
PI Snooze Function
2
+
Wake Up
0 or 1
-
b5-24
PI Wake Up Level
Sleep function
2
selection b5-21
1
+
b5-16
0
-
Delay
Timer
b5-15
Sleep Level
Sleep Function
Upper limit
Fmax x109%
0
SFS
Lower limit 0
1
Sleep function
selection b5-21
Upper limit
2
0
r
Fmax x109%
+
-
b5-22
Lower limit
PI Snooze Level
Fmax x109%
PI Snooze Function
PI delay time
PI Output
b5-08
0
+ +
+
1/t
+
Z
-1
1
PI Limit
PI Output
b5-06
Characteristic
b5-09
1
0
PI Differential
Fdbk. H3-09=16
b5-07
PI offset
PI
RUN
on/off
Output
frequency
o
1
PI
b5-23
Snooze
Delay
Timer
Gain
b5-10
1
0
b5-30
PI output monitor
(U1-37)
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