Download  Print this page
   
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
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660

Advertisement

Pr.
Name
51
Second electronic thermal O/L
H010
relay
692
Second free thermal reduction
H011
frequency 1
693
Second free thermal reduction
H012
ratio 1
694
Second free thermal reduction
H013
frequency 2
695
Second free thermal reduction
H014
ratio 2
696
Second free thermal reduction
H015
frequency 3
608
Second motor permissible load
H016
level
561
PTC thermistor protection level 9999
H020
1016
PTC thermistor protection
H021
detection time
*1
The setting range for the FR-F820-02330(55K) or lower and FR-F840-01160(55K) or lower. The minimum setting increment is 0.01 A.
*2
The setting range for the FR-F820-03160(75K) or higher and FR-F840-01800(75K) or higher. The minimum setting increment is 0.1 A.
 Electronic thermal O/L relay operation characteristic for induction motor
(Pr.9)
• This function detects the overload (overheat) of the motor and shut off the inverter output by stopping the operation of the
transistor at the inverter output side.
• Set the rated current (A) of the motor in Pr.9 Electronic thermal O/L relay. (If the motor has both 50 Hz and 60 Hz ratings
and the Pr.3 Base frequency is set to 60 Hz, set to 1.1 times the 60 Hz rated motor current.)
• Set "0" in Pr.9 to avoid activating the electronic thermal relay function; for example, when using an external thermal relay
for the motor.
(Note that the output transistor protection of the inverter is activated. (E.THT))
• When using the Mitsubishi Electric constant-torque motor, set Pr.71 Applied motor = "1, 13 to 16, 50, 53, 54". (This setting
enables the 100% constant-torque characteristic in the low-speed range.)
Pr.9 = 50% setting
of inverter rating
∗1, 2
70
30Hz
or more
∗3
20Hz
60
10Hz
6Hz
0.5Hz
50
240
180
120
60
52.5%
105%
50
Inverter output power (%)
(% to the inverter rated current)
*1
When setting Pr.9 to a value (current value) of 50% of the inverter rated current
*2
The % value denotes the percentage to the rated inverter current. It is not the percentage to the rated motor current.
Initial value
9999
9999
100%
9999
100%
9999
9999
0 s
Pr.9 = 100% setting
of inverter rating
∗2
30Hz or more
∗3
20Hz
Operation region
10Hz
Region on the right of
characteristic curve
6Hz
Non-operation region
Region on the left of
0.5Hz
characteristic curve
Characteristic when electronic thermal relay
function for motor protection is turned off
(When Pr.9 setting is 0(A))
Range for
the transistor
protection
∗4
100 120
150
230
Setting range
*1
0 to 500 A
Enabled when the RT signal is ON.
Set the rated motor current.
*2
0 to 3600 A
9999
Second electronic thermal O/L relay invalid
0 to 590 Hz
9999
1 to 100%
The electronic thermal O/L relay operation level can
9999
be changed to match the second motor temperature
0 to 590 Hz
characteristics with the combination of these three
points (Pr.692, Pr.693), (Pr.694, Pr.695), (Pr.696,
9999
Pr.51) when the RT signal is ON.
1 to 100%
9999: Second free thermal O/L relay invalid
9999
0 to 590 Hz
9999
Set the permissible frequency when the RT signal is
110 to 250%
ON.
The Pr.607 setting is applied even when the RT signal
9999
is ON.
0.5 to 30 kΩ
Set the PTC thermistor protection level (resistance).
9999
PTC thermistor protection disabled
Set the time from when the resistance of the PTC
0 to 60 s
thermistor reaches the protection level until the
protective function is activated.
Description
5. PARAMETERS
5.7 (H) Protective function parameter
1
2
3
4
5
6
7
8
9
10
253

Advertisement

Table of Contents

Comments to this Manuals

Symbols: 0
Latest comments: