Lenze 8200 Frequency inverters Manual de usuario Pagina 208
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Configuration
8200SHB0199
7-71
7.7.3 Thermal motor monitoring
7.7.3.1 I
2
x t monitoring
Code Name
Possible settings
IMPORTANT
Lenze Choice Info
C120 I
2
k tswitch-off 0 0 {1 %} 100
Function With the I
2
¼ t monitoring, self-ventilated three-phase AC motors can be thermally monitored without
using sensors.
Adjustment
Enter an individual load limit for the motor connected.
- If thisvalues is exceeded for a longerperiodof time, the controller will set the fault OC6 and
switch-off (see chart).
The current limits C022 and C023 only have an indirect influence on the I
2
¼ tcalculation:
- The settingsof C022 and C023 can make the operationwithmaximumcontrollerload (C056)
impossible.
When selecting a drive which does not match (output current much higher than rated motor
current):
- Reduce C120 by the factor of the mismatch.
Example:
With C120 = 100 %and a load of C056 = 150 %, the controller switches off after 60 s when
reaching f
d
> 40 Hz, or earlier with f
d
<40Hz.
Important
The setting 0 % deactivates the function.
This monitoring does not provide full motor protection since the calculated motor temperature is
set to ”0” after every mains connection or disconnection. The connected motor can be
overheated, if
- it is alreadyhot butstill overloaded,
- the cooling-air stream is interrupted or the air is toohot.
Full motorprotection can be achieved with a PTC thermistor inthe motor.
- We recommend the general use of PTC monitoring systems for multi-motor drives.
To prevent motors with forced ventilation fromstarting too early, this function can be deactivated.
If load-adaptedmotors are tobe monitoredat a load of < 100 %, C120 must alsobe reduced
accordingly.
The operation of the controller with 120 %overload might lead to the activation of the I
2
k t
switch-off, because the setting of C120 > 100 % is not possible.
- Deactivate the I
2
k t switch-off for the operation of the controller at 120 % overload.
Show/Hide Bookmarks
- = Global Drive 1
- Contents of the Manual 3
- 8200SHB0199ii 6
- 8200SHB0199iv 8
- Contents 10
- 8200SHB0199vi 10
- 8200SHB0199x 14
- 1.1 How to use this Manual 17
- 1.2 Scope of delivery 17
- 8200SHB01991-2 18
- 1.3 Legal regulations 19
- 8200SHB01991-4 20
- 8200SHB01991-6 22
- 8200SHB01991-8 24
- Directive 25
- 8200SHB01991-10 26
- 1.4.5 EC Machinery Directive 27
- 8200SHB01991-12 28
- EC Manufacturer’s Declaration 28
- Safety information 29
- Technical Data 33
- 8200SHB01993-4 36
- 8200SHB01993-24 56
- 3.7.1 Features 56
- 4 Installation 58
- 4.1.1 Important notes 58
- 8200SHB01994-2 59
- 8200SHB01994-6 63
- 4.1.2.5 Types 8221 to 8227 63
- 4.1.2.6 Types 8241 to 8246 64
- 8200SHB01994-10 67
- (”push-through technique”) 67
- 4.1.4.1 Types 8215 to 8218 68
- 8200SHB01994-12 69
- 4.1.4.2 Types 8221 to 8227 69
- 4.1.4.3 Types 8241 to 8246 70
- 8200SHB01994-14 71
- 4.1.5.1 General 71
- 4.1.5.2 Demands on the cooler 72
- 8200SHB01994-16 73
- 4.1.5.4 Assembly preparations 74
- 8200SHB01994-18 75
- 8200SHB01994-20 77
- 8200SHB01994-22 79
- 8200SHB01994-24 81
- 4.2 Electrical installation 82
- 4.2.1 Operator’s safety 82
- 8200SHB01994-26 83
- 4.2.3 Motor protection 83
- 8200SHB01994-30 87
- 8200SHB01994-32 89
- 8200SHB01994-34 91
- 4.2.7.4 Connection plan 820X 92
- 8200SHB01994-36 93
- 4.2.7.5 Connection plan 821X 93
- 8200SHB01994-40 97
- 4.2.8.3 Connection diagrams 98
- 8200SHB01994-42 99
- Installation 100
- 8200SHB0199 100
- 8200SHB01994-44 101
- 8200SHB01994-46 103
- Edition of: 01/1999 105
- 5 Commissioning 106
- Commissioning 106
- 8200SHB01995-16 121
- 8200SHB01995-18 123
- 8200SHB01995-20 125
- 8200SHB01995-22 127
- 8200SHB01995-24 129
- 8200SHB01995-26 131
- 5.5.4 Air conditioning system 131
- 8200SHB01995-28 133
- During operation 134
- 6 During operation 134
- 6.1 Operating information 134
- 6.1.1 General 134
- 8200SHB01996-2 135
- 6.1.2 822X/824X 135
- 6.1.3 8218-V003 135
- Configuration 138
- 7 Configuration 138
- 8200SHB01997-2 139
- 7.1 8201BB operating module 139
- 8200SHB01997-4 141
- 7.2.1 Operating level 141
- 7.2.2 Code level 141
- 7.2.3 Parameter level 142
- 8200SHB01997-6 143
- 8200SHB01997-8 145
- 7.4 Operating functions 146
- 7.4.1 Operating mode 146
- 8200SHB01997-10 147
- 8200SHB01997-12 149
- 8200SHB01997-14 151
- 8200SHB01997-20 157
- 8200SHB01997-22 159
- 7.5.6 V/f characteristic 159
- 7.5.6.1 V/f-rated frequency f 159
- 8200SHB01997-26 163
- 7.5.7 Configuration 163
- 7.5.8 Motor data detection 164
- 7.5.9.2 Chopper frequency 166
- 8200SHB01997-30 167
- 7.5.9.3 Oscillation damping 168
- 8200SHB01997-32 169
- 7.5.9.5 Skip frequencies 170
- 8200SHB01997-34 171
- 8200SHB01997-36 173
- 7.5.10.3 Frequency precontrol 176
- 8200SHB01997-40 177
- 7.5.11 Setpoint input 177
- 8200SHB01997-42 179
- 7.5.11.6 Setpoint sum 184
- 8200SHB01997-48 185
- 7.5.12 Controller enable RFR 185
- 8200SHB01997-50 187
- 8200SHB01997-52 189
- 8200SHB01997-56 193
- 8200SHB01997-58 195
- 7.5.14.7 TRIP set 195
- 8200SHB01997-60 197
- 8200SHB01997-64 201
- 8200SHB01997-72 209
- 7.7.3.2 PTC input 209
- 8200SHB01997-74 211
- 8200SHB01997-80 217
- 8200SHB01997-82 219
- 8200SHB01997-86 223
- 8200SHB01997-90 227
- 8200SHB01997-94 231
- 8200SHB01997-96 233
- 8.1 Troubleshooting 236
- 8.3 Fault messages 237
- 8200SHB01998-4 239
- 8.4 Reset of fault messages 239
- Maintenance 240
- 9 Maintenance 240
- 9.1 Maintenance services 240
- 8200SHB01999-2 241
- 9.2 Service addresses 241
- Network of several drives 244
- 10 Network of several drives 244
- 10.1 Function 244
- 10.3.1 Conditions 252
- 10.3 Selection basics 252
- 8200SHB019910-18 261
- Instructions 262
- Application of brake units 264
- 11 Application of brake units 264
- 8200SHB019911-2 265
- Automation 267
- 12 Automation 267
- Accessories 270
- 13 Accessories (Survey) 270
- 13.2 Software 270
- 8200SHB019913-2 271
- 13.3.1 Types 820X 271
- 13.3.2 Types 821X 272
- 8200SHB019913-4 273
- 13.3.3 Types 822X 273
- 13.3.4 Types 824X 274
- 8200SHB019913-6 275
- Selection help 278
- 14 Selection help 278
- 8200SHB019914-2 279
- Application examples 280
- 15 Application examples 280
- 8200SHB019915-2 281
- Show/Hide Bookmarks 285
- 8200SHB019915-8 287
- 15.4 Air conditioning system 287
- 8200SHB019915-10 289
- Signal flow charts 292
- 16 Signal-flow charts 292
- 16.1.1 Control structure 293
- 16.1.2 Inverter control 294
- 16.1.3 Monitorings 294
- Glossary 302
- 17 Glossary 302
- 8200SHB019917-2 303
- Table of keyw ords 304
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