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7Braking operation
7.2 Monitoring
270
Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
7.2.3 I2t utilisation - brake resistor
The controller is provided with a monitoring function of the I
2
t utilisation of the brake resistor
which is proportional to the converted braking power.
[7-2] Signal flow - I2t utilisation - brake resistor
• The monitoring function is based on the mathematical model which calculates the braking
current from the current DC-bus voltage and the brake resistance parameterised in C00129
.
• Hence, monitoring can be activated although no brake resistor is connected and can
therefore also be used for a testing mode to check the parameterisation.
• During the calculation, the thermal utilisation of the brake resistor on the basis of the following
parameters is taken into consideration:
• Resistance value (C00129
)
• Continuous power (C00130
)
• Thermal capacity (C00131
)
• C00138
displays the calculated utilisation of the brake resistor in [%].
• A 100 % utilisation corresponds to the continuous power of the brake resistor which results
at the maximum permissible temperature limit of the brake resistor.
• The calculated utilisation is provided as oscilloscope signal Common.dnI2tBrakeResistor to
check the braking operation while the system is running
(scaling: 2
30
≡ 100 %).
• If the utilisation exceeds the advance warning threshold set in C00572
, "Brake resistor: I2t >
C00572" is entered in the logbook and the response set in C00571
(default setting: "Warning")
is activated.
Note!
If the DC-bus voltage exceeds the overvoltage threshold due to a too high braking
energy, the monitoring function for overvoltage in the DC bus responds. DC bus
overvoltage ( 272)
Note!
The braking operation will never be switched off by this monitoring function.
I2t
C00138
C00129
T=0
Off
T=1
On
100 %
C00572
C00571
C00574
C00129
C00130
C00131
Logbook entry " "Brake resistor: I2t > C00572
Logbook entry " "Brake resistor: I2t overload
U
DC_act
Temperature model
I=
Br
I
Br
- Reference manual 1
- E94AxHExxxx 1
- Contents 10
- 1 About this documentation 12
- 2Introduction 15
- 3 Commissioning 22
- %LW 37
- %LW 37
- RAM Memory module MM 87
- Cam dataCam data 87
- Cam application 87
- Controller inhibit 97
- 4 Drive interface 100
- Danger! 101
- LS_DriveInterface 110
- 5 Motor interface 115
- Actual value 191
- Set value 191
- LS_MotorInterface 231
- LS_Feedback 237
- 6 Encoder evaluation 238
- Feed constant ( 36) 245
- 66,BGZ'DWDZRUGB 254
- 66,BGZ'DWDZRUGB 254
- 66,BGZ'DWDZRUGB 254
- LS_EncoderX8 260
- 7Braking operation 266
- 8 I/O terminals 273
- AIN1_dnIn_n 276
- AIN1_bCurrentError 276
- AIN2_dnIn_n 276
- AOUT1_dnOut_n 278
- AOUT2_dnOut_n 278
- DIGIN_bStateBusIn 284
- DIGOUT_bStateBusOut 284
- LS_TouchProbex 285
- L_SdTouchProbe 285
- LS_TouchProbeMotor 289
- LS_TouchProbeLoad 289
- 9.1 General information 293
- 9.1.2 Supported protocols 294
- 9.1.3 Communication time 295
- DIP switch 64 32 16 8 4 2 1 296
- Value 0 0 296
- 16 0 4 2 1 296
- 9.2.2 Setting the baud rate 297
- CAN-RUN CAN-ERR 298
- 9.4.1 Identifier 299
- 9.4.2 User data 301
- 9.5.1 State transitions 303
- &2%,' 304
- Parameter Info Lenze setting 305
- C00352 CAN slave/master Slave 305
- 9.6 Process data transfer 306
- 9.6.2 Transmission type 308
- Value Unit 309
- SYNC SYNC 310
- 9.6.5.1 Parameter setting 311
- ( 364) 312
- 9.7 Parameter data transfer 315
- 9.7.2 User data 316
- 9.7.2.1 Command 317
- 9.7.2.3 Data 1 ... data 4 319
- 9.7.2.4 Error messages 319
- 0x41 0x00 0x04 0x06 320
- Meaning of the error codes 321
- 9.7.3.1 Reading parameters 322
- 9.7.3.2 Writing parameters 323
- 9.8 Diagnostics 327
- 9.9 Monitoring 328
- 9.9.1 Node guarding protocol 328
- 9.9.1.1 Telegram structure 329
- 9.9.1.2 Parameter setting 330
- 9.9.1.3 Commissioning example 332
- ( 329) 333
- 9.9.2 Heartbeat protocol 334
- 9.9.2.1 Telegram structure 335
- 9.9.2.2 Parameter setting 335
- 9.9.2.3 Commissioning example 337
- 9.9.3 Emergency telegram 338
- LS_SyncInput 364
- Data type 365
- 10 Safety engineering 366
- LS_SafetyModuleInterface 368
- 11 Basic drive functions 372
- Controller not ready 374
- STP_dnState 385
- STP_bStopActive 385
- Activate stopping 385
- (internal status machine) 385
- LS_Quickstop 388
- Actual speed 393
- LS_ManualJog 396
- LS_ManualJogOpenLoop 414
- LS_Homing 418
- LS_Positioner 475
- LS_PositionFollower 486
- LS_SpeedFollower 492
- LS_TorqueFollower 498
- LS_Limiter 502
- GIRFRDI1DI2DI3DI4DI5DI6DI7DI8 511
- LS_DigitalInput 511
- LS_Brake 519
- GO24ODO1DO2DO3DO4 523
- C02586: Starting torque 1 532
- C02587 532
- : Starting torque 2 532
- C02588 532
- : Source of starting torque 532
- C02588 = 1 533
- Speed controller 533
- BRK_dnTorqueAdd_n 534
- C2605/1 C2605/2 550
- BRK_bReleaseBrakeOut 551
- 24VDCDigital I/O 551
- How to update the cam data: 557
- /6B&DP,QWHUIDFH 558
- 11.13.3.2 Online change mode 562
- How to change a cam: 566
- Product number 567
- LS_PolePositionIdentification 571
- 12 Oscilloscope 579
- How to change a selection: 583
- How to delete a selection: 583
- 13.1 LED status displays 598
- DRIVE READY DRIVE ERROR 599
- 13.4 Logbook 603
- 13.4.1 Functional description 604
- Cause Remedy 609
- Bit 31 1625262829 015 610
- 0001111011 613
- 0000000000001111 613
- 13.7.2 Reset error message 614
- 13.7.3 Short overview (A-Z) 615
- 184: Basic drive functions 53 712
- 14 Parameter reference 713
- )(('%$& 952
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