Download  Print this page

Special Operation And Frequency Control; Pid Control (pr. 127 To Pr. 134, Pr. 241, Pr. 553, Pr. 554, Pr. 575 To Pr. 577, C42 (pr. 934) To C45 (pr. 935)) - Mitsubishi Electric FR-F720P-0.75K to 110K Instruction Manual

Fr-f700p series.
Hide thumbs
   
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410

Advertisement

4.21 Special operation and frequency control

Purpose
Perform process control such as pump and air
volume.
Switch between the inverter operation and
bypass operation to operate.
Avoid overvoltage alarm due to regeneration by
automatic adjustment of output frequency.
4.21.1 PID control (Pr. 127 to Pr. 134, Pr. 241, Pr. 553, Pr. 554, Pr. 575 to Pr. 577,
C42 (Pr. 934) to C45 (Pr. 935))
The inverter can be used to exercise process control, e.g. flow rate, air volume or pressure.
The terminal 2 input signal or parameter setting is used as a set point and the terminal 4 input signal used as a
feedback value to constitute a feedback system for PID control.
Parameter
Name
Number
PID control automatic
127
switchover frequency
128
PID action selection
129
PID proportional band
*1
130
PID integral time
*1
131
PID upper limit
132
PID lower limit
133
PID action set point
*1
134
PID differential time
*1
Parameter that must be Set
PID control
Bypass-inverter switchover
function
Regeneration avoidance
function
Initial
Setting
Value
Range
Set the frequency at which the control is automatically
0 to 400Hz
changed to PID control.
9999
9999
Without PID automatic switchover function
10, 110
PID reverse action
*2
11, 111
PID forward action
*2
20, 120
PID reverse action
*2
21, 121
PID forward action
*2
10
50
PID reverse action
*2
51
PID forward action
*2
60
PID reverse action
*2
61
PID forward action
*2
If the proportional band is narrow (parameter setting is small),
the manipulated variable varies greatly with a slight change of
the measured value. Hence, as the proportional band narrows,
0.1 to 1000%
100%
the response sensitivity (gain) improves but the stability
deteriorates, e.g. hunting occurs.
Gain Kp = 1/proportional band
9999
No proportional control
When deviation step is input, time (Ti) is the time required for
integral (I) action to provide the same manipulated variable as
0.1 to 3600s
proportional (P) action.
1s
As the integral time decreases, the set point is reached earlier
but hunting occurs more easily.
9999
No integral control.
Set the upper limit value. If the feedback value exceeds the
setting, the FUP signal is output. The maximum input (20mA/
0 to 100%
*3
5V/10V) of the measured value (terminal 4) is equivalent to
9999
100%.
9999
No function
Set the lower limit value. If the measured value falls below the
setting range, the FDN signal is output. The maximum input
0 to 100%
*3
(20mA/5V/10V) of the measured value (terminal 4) is
9999
equivalent to 100%.
9999
No function
0 to 100%
Used to set the set point for PID control.
*3
9999
9999
Terminal 2 input is the set point.
When deviation lamp is input, time (Td) is the time required to
0.01 to
provide the manipulated variable of only the proportional (P)
10.00s
action. As the differential time increases, greater response is
9999
made to a deviation change.
9999
No differential control.
Special operation and frequency control
Pr. 127 to Pr. 134, Pr. 241,
Pr. 553, Pr. 554,
Pr. 575 to Pr. 577,
C42 (Pr. 934) to C45 (Pr. 935)
Pr. 135 to Pr. 139, Pr. 159
Pr.665, Pr. 882 to Pr. 886
Description
Deviation value signal input
(terminal 1
Measured value (terminal 4
Set point (terminal 2
Deviation value signal input
(L
W
, CC-Link communication)
ON
ORKS
Measured value, set point input
(L
W
, CC-Link communication)
ON
ORKS
Refer
to Page
261
274
279
)
*4
)
*5
or Pr. 133)
*4
4
261

Advertisement

Table of Contents

   Also See for Mitsubishi Electric FR-F720P-0.75K to 110K

Comments to this Manuals

Symbols: 0
Latest comments: