Siemens CU230P-2 Operations Instructions Page 198
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Functions
7.4 Setpoint sources
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
196 Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
7.4.2 Motorized potentiometer as setpoint source
The 'motorized potentiometer' (MOP) function simulates an electromechanical potentiometer
for entering setpoints. You can continuously adjust the motorized potentiometer (MOP) using
the control signals "raise" and "lower". The control signals are received via the digital inputs
of the inverter or from the operator panel that has been inserted.
Typical applications
● Entering the speed setpoint during the commissioning phase.
● Manual operation of the motor should the higher-level control fail.
● Entering the speed setpoint after changeover from automatic operation to manual
operation.
● Applications with largely constant setpoint and without higher-level control.
Principle of operation
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Figure 7-9 Function chart of motorized potentiometer
Motorized potentiometer parameters
Table 7- 16 Basic setup of motorized potentiometer
Parameter Description
p1047 MOP ramp-up time (factory setting 10 s)
p1048 MOP ramp-down time (factory setting 10 s)
p1040 Start value of MOP (factory setting 0 rpm)
Determines the start value [rpm] that becomes effective when the motor is switched
on
- SINAMICS 1
- A5E02430659B AD 3
- Change history 5
- Table of contents 10
- Table of contents 11
- Introduction 13
- 1.3.1 General basics 15
- 1.3.2 Parameter 15
- Introduction 17
- Binectors and connectors 18
- BICO parameters 19
- +DQGKHOG 24
- ,23 %23 24
- Description 25
- 2.2 Control Units 26
- 2.3 Power Module 27
- 2.4 Reactors and filters 28
- Installing 29
- Line supply 31
- Line filter 31
- 3.3 Installing Power Module 32
- Installing 33
- 3.3 Installing Power Module 34
- WRSERWWRP 36
- Preconditions 38
- Connecting the inverter 40
- Control cabinet design 41
- Cable routing and shielding 41
- UL Type 12 44
- 3.4 Installing Control Unit 46
- IP55 Power Modules 47
- 3.4 Installing Control Unit 48
- Motorized potentiometer 51
- Process industry 51
- Two- or three-wire control 52
- Commissioning 55
- &RPPLVVLRQLQJ 55
- FRPSOHWHG 55
- Commissioning 57
- 4.4.1 Menu structure 66
- ② Basic commissioning 66
- 4.4.4 Additional settings 69
- Commissioning steps 70
- Going online 72
- ① In the next step, set the 74
- ④ Switch on the motor 75
- Go offline 76
- Recording 77
- ', 78
- ', 78
- ', 78
- Display options 79
- External data backup 80
- Series commissioning 80
- Automatic upload 82
- Manual upload 82
- Automatic download 83
- Manual download 83
- Adapting the terminal strip 87
- 5.2 Digital inputs 88
- 5.3 Digital outputs 90
- 5.4 Analog inputs 91
- 5.4 Analog inputs 92
- 5.4 Analog inputs 93
- 5.5 Analog outputs 95
- 5.5 Analog outputs 96
- Configuring the fieldbus 100
- 6.1.2 Setting the address 101
- 6.1.4 Cyclic communication 103
- Select telegram 104
- Control word 1 (STW1) 105
- Status word 1 (ZSW1) 106
- Control word 3 (STW3) 107
- Status word 3 (ZSW3) 108
- Parameter channel 109
- Configuring the fieldbus 111
- Parameter index (IND) 112
- Parameter value (PWE) 112
- 6.1.5 Acyclic communication 115
- Changing parameter values 117
- Diagnostics 118
- 6.2 Communication via RS485 120
- 6.2.2 Communication via USS 121
- STX LGE ADR 1. 2. : : : n BCC 122
- Description 123
- Start delay 123
- 6.2 Communication via RS485 124
- channel (IND) 125
- 6.2.2.6 USS read request 130
- 6.2.2.7 USS write job 131
- Communication settings 135
- 6.2.3.1 Setting the address 136
- 6.2.3.3 Modbus RTU telegram 137
- Function codes used 141
- Communication errors 143
- Logical error 144
- BACnet properties 145
- 6.2.4.1 Setting the address 146
- BIBBs used by the inverter 147
- General information on CAN 154
- Communication objects (COB) 155
- COB ID 155
- 6.3.2 Commissioning CANopen 156
- 6.3.2.3 SDO services 158
- Properties 158
- CS index sub index length 159
- SDO abort codes 160
- Selection, index range 162
- Process data objects (PDO) 163
- PDO services 166
- 6.3.2.7 Free PDO mapping 168
- Example 168
- 6.3.4 Object directories 172
- TPDO configuration objects 175
- 6.3.4.1 Free objects 179
- 6.3.5 Configuration example 181
- ,QWHUIDFHV 185
- Functions 186
- 7.2 Inverter control 187
- 7.2 Inverter control 188
- Functions 189
- 7.2 Inverter control 189
- 7HFKQRORJ\FRQWUROOHU 193
- &'6 193
- &'6 193
- &RPPDQGGDWDVHW 194
- &RPPDQGGDWDVHW 194
- Advanced settings 195
- 7.3 Command sources 196
- 7.4 Setpoint sources 197
- Typical applications 198
- Principle of operation 198
- 7.4 Setpoint sources 199
- Procedure 200
- Setting jogging 202
- 7.5 Setpoint calculation 204
- Ramp-up/down time 205
- 7.6 Motor control 206
- 7.6 Motor control 207
- 7.6.1 V/f control 208
- 7.6 Motor control 210
- 7.6.2 Vector control 212
- 7.6.2.3 Torque control 213
- 7.7 Protection functions 214
- 7.7 Protection functions 215
- 7.7 Protection functions 216
- Method of operation of I 217
- controller 217
- Settings 218
- 7.8 Status messages 220
- 7.9.1 Unit changeover 221
- Regenerative power 227
- ,QYHUWHU 228
- %UDNLQJUHVLVWRU 228
- %UDNLQJ 228
- 7.9.2.2 DC braking 230
- DC braking parameters 233
- 7.9.2.3 Compound braking 234
- 7.9.2.4 Dynamic braking 236
- Braking resistor connection 236
- 7.9.3.2 Automatic switch-on 241
- WRVLJQDOHYDOXDWLRQ 248
- ',[ 248
- 7.9.7 Real time clock (RTC) 249
- 7.9.8 Time switch (DTC) 251
- Analog input AI 2 252
- Analog input AI 3 252
- Application example 254
- 7.9.11 Multi-zone control 259
- Day and night switching 260
- 7.9.12 Cascade control 263
- 6,1$0,&6 267
- 7.9.14 Energy-saving mode 271
- Display parameters 276
- Activating the free blocks 277
- Analog signal scaling 278
- Example: AND operation 280
- Service and maintenance 283
- Service and maintenance 285
- 6ORZIODVKLQJ 288
- 4XLFNIODVKLQJ 288
- 6LQJOHIODVK 289
- 'RXEOHIODVK 289
- 9.2 Alarms 290
- 9.2 Alarms 291
- Extended settings for alarms 292
- 9.3 Faults 293
- Fault acknowledgement 294
- 9.3 Faults 295
- 9.3 Faults 296
- Extended settings for faults 297
- Axxxxx Alarm 298
- Fyyyyy: Fault 298
- Technical data 305
- Definitions 308
- Technical data 309
- General data, PM240 - IP20 314
- General data, PM250 - IP20 320
- General data, PM260 - IP20 323
- Appendix 325
- Appendix 327
- A.1 Application examples 327
- A.1 Application examples 328
- Final steps 329
- &RQWURO 336
- Index 343
- 110, 126 344
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