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Principles of analog value processing

4.4 Wiring and connecting current transducers

S7-300 Module data

246 Manual, 06/2017, A5E00105505-AJ

Wiring and connecting 2-wire transducers with power supply from L+

Configure the 2-wire as a 4-wire transducer in

STEP 7

if it is connected to supply voltage L+.

Figure 4-7 Wiring and connecting a 2-wire transducer with supply from L + to an electrically isolated

Wiring and connecting 4-wire transducers

4-wire transducers are connected to a separately power supply.

Figure 4-8 Wiring and connecting 4-wire transducers to electrically isolated AI

Preface3
Table of Contents7
General Technical Data14
- Standards and Approvals14
- Electromagnetic Compatibility19
- Shipping and Storage Conditions for Modules and Backup Batteries21
- 1.4 Mechanical and Climatic Environmental Conditions for S7-300 Operation23
- Specification of Dielectric Tests, Protection Class, Degree of Protection, and Rated Voltage of S7-30025
- Rated Voltages of S7-30025
- SIPLUS S7-300 Modules26
- 1.8 Environmental Conditions for the Operation of SIPLUS S7-300 Modules30
Power Supply Modules32
- Power Supply Module PS 307; 2 A; (6ES7307-1BA01-0AA0)33
- Power Supply Module PS 307; 5 A; (6ES7307-1EA01-0AA0)36
- Power Supply Module PS 307; 10 A; (6ES7307-1KA02-0AA0)39
- Power Supply Module PS 305; 2 A; (6AG1305-1BA80-2AA0)42
- Power Supply Module PS 307; 5 A; (6AG1307-1EA80-2AA0)45
Digital Modules48
- Module Overview49
- Digital Input Modules49
- Digital Output Modules52
- Relay Output Modules55
- Digital IO Modules56
- Steps in Selecting and Commissioning the Digital Module57
- Programming Digital Modules58
- Diagnostics of Digital Modules59
- How to Protect Digital Modules from Inductive Overvoltage61
- Digital Input Module SM 321; DI 64 X DC 24 V, Sinking/Sourcing; (6ES7321-1BP00-0AA0)63
- Digital Input Module SM 321; DI 32 X DC 24 V; (6ES7321-1BL00-0AA0)70
- Digital Output Module SM 321; DI 32 X AC 120 V; (6ES7321-1EL00-0AA0)73
- Digital Input Module SM 321; DI 16 X DC 24 V; (6ES7321-1BH02-0AA0)76
- Digital Input Module SM 321; DI 16 X DC 24 V High Speed; (6ES7321-1BH10-0AA0)78
Digital Input Module SM 321; DI 16 X 24 VDC; with Hardware and Diagnostic Interrupts (6ES7321-7BH01-0AB0)80
Isochronous Mode85
SM 321; DI 16 X DC 24 V - Parameters86
SM 321; DI 16 X DC 24 V - Diagnostics88
SM 321; DI 16 X DC 24 V - Behavior90
SM 321; DI 16 X DC 24 V - Interrupts91
Digital Input Module SM 321; DI 16 X DC 24/125 V; with Hardware and Diagnostic Interrupts (6ES7321-7EH00-0AB0)94
Parameters of SM 321; DI 16 X DC 24/125 V98
Diagnostics of SM 321; DI 16 X DC 24/125 V99
Interrupts of SM 321; DI 16 X DC 24/125 V100
Digital Input Module SM 321; DI 16 X DC 24 V; Source Input; (6ES7321-1BH50-0AA0)103
Digital Input Module SM 321; DI 16 X UC 24/48 V; (6ES7321-1CH00-0AA0)105
Digital Input Module SM 321; DI 16 X DC 48-125 V; (6ES7321-1CH20-0AA0)108
Digital Input Module SM 321; DI 16 X AC 120/230 V; (6ES7321-1FH00-0AA0)111
Digital Input Module SM 321; DI 8 X AC 120/230 V; (6ES7321-1FF01-0AA0)114
Digital Input Module SM 321; DI 8 X AC 120/230 V ISOL; (6ES7321-1FF10-0AA0)117
Digital Output Module SM 322; DO 64 X DC 24 V/0.3 a Sourcing; (6ES7322-1BP00-0AA0)120
Digital Output Module SM 322; DO 64 X DC 24 V/0.3 a Sinking (6ES7322-1BP50-0AA0)128
Digital Output Module SM 322; DO 32 X DC 24 V/ 0.5 A; (6ES7322-1BL00-0AA0)135
Digital Output Module SM 322; DO 32 X AC 120/230 V/1 A; (6ES7322-1FL00-0AA0)139
Digital Output Module SM 322; DO 16 X DC 24 V/ 0.5 A; (6ES7322-1BH01-0AA0)143
Digital Output Module SM 322; DO 16 X DC 24 V/0.5 A: (6ES7322-8BH10-0AB0)147
Parameters of Digital Output Modules152
Diagnosis of Digital Output Modules153
Firmware Update Via HW Config154
I&M Identification Data155
Digital Output Module SM 322; DO 16 X DC 24 V/0.5 a High Speed; (6ES7322-1BH10-0AA0)157
Digital Output Module SM 322; DO 16 X UC 24/48 V; (6ES7322-5GH00-0AB0)161
Parameters of Digital Output Module SM 322 DO 16 X UC24/48 V165
Digital Output Module SM 322; DO 16 X AC 120/230 V/1 A; (6ES7322-1FH00-0AA0)167
Digital Output Module SM 322; DO 8 X DC 24 V/2 A; (6ES7322-1BF01-0AA0)170
Digital Output Module SM 322; DO 8 X DC 24 V/ 0.5 A; with Diagnostics Interrupt; (6ES7322-8BF00-0AB0)174
SM 322; DO 8 X DC 24 V/0.5 a - Parameters178
SM 322; DO 8 X DC 24 V/0.5 a - Diagnostics179
SM 322; DO 8 X DC 24 V/0.5 a - Behavior181
SM 322; DO 8 X DC 24 V/0.5 a - Interrupts182
Digital Output Module SM 322; DO 8 X DC 48-125 V/1.5 A; (6ES7322-1CF00-0AA0)183
- Digital Output Module SM 322;DO 8 X AC 120/230 V/2 A; (6ES7322-1FF01-0AA0)187
- Digital Output Module SM 322; DO 8 X AC 120/230 V/2 a ISOL (6ES7322-5FF00-0AB0)191
- Parameters of SM 322; DO 8 X AC 120/230 V/2 a ISOL195
- SM 322; DO 8 X AC 120/230 V/2 a ISOL - Diagnostics196
- SM 322; DO 8 X AC 120/230 V/2 a ISOL - Interrupts196
- Relay Output Module SM 322; DO 16 X Rel. AC 120/230 V; (6ES7322-1HH01-0AA0)198
- Relay Output Module SM 322; DO 8 X Rel. AC 230 V; (6ES7322-1HF01-0AA0)203
- Relay Output Module SM 322; DO 8 X Rel. 230VAC/5A; (6ES7322-5HF00-0AB0)208
- Parameters of SM 322; DO 8 X Rel. AC 230V/5A214
- SM 322; DO 8 X Rel. AC 230V/5A - Diagnostics214
- SM 322; DO 8 X Rel. AC 230V/5A - Interrupts215
- Relay Output Module SM 322; DO 8 X Rel. AC 230 V/5 A; (6ES7322-1HF10-0AA0)216
- Digital IO Module SM 323; DI 16/DO 16 X DC 24 V/0.5 A; (6ES7323-1BL00-0AA0)222
- Digital IO Module SM 323; DI 8/DO 8 X DC 24 V/0.5 A; (6ES7323-1BH01-0AA0)227
- Programmable Digital IO Module SM 327; DI 8/DO 8 X DC 24 V/0.5 a (6ES7327-1BH00-0AB0)231
- Parameters of SM 327; DI 8/DO 8 X 24 VDC/0.5 a235
- Structure of Data Record 1 of SM 327; DI 8/DO 8 X DC 24 V/0.5 a236
Principles of Analog Value Processing238
- Overview238
- Wiring and Connecting Transducers to Analog Inputs239
- Wiring and Connecting Electrically Isolated Transducers240
- Wiring Non-Isolated Transducers241
- Wiring and Connecting Voltage Transducers244
- Wiring and Connecting Current Transducers245
- Wiring and Connecting Resistance Thermometers and Resistors247
- Wiring and Connecting Thermocouples249
- Wiring and Connecting Thermocouples with Internal Compensation253
- Wiring and Connecting Thermocouples with External Compensation254
- Wiring and Connecting Loads/Actuators to Analog Outputs257
- Wiring and Connecting Loads/Actuators to Voltage Outputs258
- Wiring and Connecting Loads/Actuators to Current Outputs260
Principles of Analog Modules261
- Representation of the Values for Analog Input Channels262
- Representation of Analog Values for Analog Output Channels279
- Setting the Measuring Method and Ranges of Analog Input Channels282
- Response of the Analog Modules285
- Influence of the Power Supply and Operating State285
- Influence of the Range of Analog Values287
- Influence of Operational Limits and Basic Error Limits288
- Conversion and Cycle Times of Analog Modules289
- Settling and Response Times of Analog Output Channels293
- Programming Analog Modules294
- Parameters of Analog Input Modules294
- Diagnostics of Analog Modules295
- Diagnostics Messages of Analog Input Modules296
- Diagnostic Messages of Analog Output Modules296
- Causes of Error and Troubleshooting at Analog Input Modules297
- Causes of Error and Troubleshooting at Analog Output Modules297
- Interrupts of Analog Modules298
Analog Modules300
- Analog Module Selection and Commissioning Sequence301
- Module Overview302
- Analog Input Modules302
- Analog Output Modules305
- Analog I/O Modules306
- Analog Input Module SM 331; AI 8 X 16 Bit; (6ES7331-7NF00-0AB0)307
- Measurement Types and Ranges313
- Programmable Parameters314
- Additional Information on SM 331; AI 8 X 16 Bit315
- Analog Input Module SM 331; AI 8 X 16 Bit; (6ES7331-7NF10-0AB0)318
- Measurement Types and Measuring Ranges323
- Programmable Parameters324
- Additional Information for SM 331; AI 8 X 16 Bit325
- Analog Input Module SM 331; AI 8 X 14 Bit High Speed; Isochrone; (6ES7331-7Hf0X-0AB0)329
- Measurement Types and Measuring Ranges334
- Programmable Parameters336
- Isochronous Mode337
- Additional Information on SM 331; AI 8 X 14 Bit High Speed, Isochrone339
- Analog Input Module SM 331; AI 8 X 13 Bit; (6ES7331-1KF02-0AB0)340
- Measurement Types and Measuring Ranges348
- Programmable Parameters348
- Additional Information on SM 331; AI 8 X 13 Bit350
- Analog Input Module SM 331; AI 8 X 12 Bit;(6ES7331-7KF02-0AB0)353
- Measurement Types and Ranges362
- Programmable Parameters364
- Additional Information on SM 331; AI 8 X 12 Bit366
- This Optimizes366
- Analog Input Module SM 331; AI 2 X 12 Bit; (6ES7331-7KB02-0AB0)367
- Measurement Types and Measuring Ranges376
- Programmable Parameters378
- Additional Information on SM 331; AI 2 X 12 Bit379
- Analog Input Module SM 331; AI 8 X RTD (6ES7331-7PF01-0AB0)380
- Measurement Types and Measuring Ranges387
- Programmable Parameters389
- Additional Information on SM 331; AI 8 X RTD391
- Analog Input Module SM 331; AI 8 X TC; (6ES7331-7PF11-0AB0)396
- Measurement Types and Measuring Ranges404
- Adjustable Parameters405
- Additional Information on SM 331; AI 8 X TC407
- Analog Input Module SM 331, AI 6 X TC Isolated (6ES7331-7PE10-0AB0)412
- Measurement Types and Measuring Ranges423
- Programmable Parameters424
- Additional Information Relating to SM 331; AI 6 X TC425
- Firmware Update Via HW Config for Analog Input Module SM 331; AI 6 X TC431
- I&M Data for Identifying the Analog Input Module SM 331; AI 6 X TC433
- Calibration of Analog Input Module SM 331; AI 6 X TC434
- Analog Output Module SM 332; AO 8 X 12 Bit; (6ES7332-5HF00-0AB0)442
- SM 332; AO 8 X 12 Bit - Output Ranges447
- Programmable Parameters448
- Additional Information on SM 332; AO 8 X 12 Bit449
- Analog Output Module SM 332; AO 4 X 16 Bit; Isochrone; (6ES7332-7ND02-0AB0)450
- SM 332; AO 4 X 16 Bit - Output Ranges456
- Programmable Parameters457
- Isochronous Mode458
- Additional Information on SM 332; AO 4 X 16 Bit459
- Analog Output Module SM 332; AO 4 X 12 Bit; (6ES7332-5HD01-0AB0)460
- Output Ranges of SM 332; AO 4 X 12 Bit465
- Programmable Parameters466
- Additional Information on SM 332; AO 4 X 12 Bit467
- Analog Output Module SM 332; AO 2 X 12 Bit; (6ES7332-5HB01-0AB0)468
- Output Ranges of SM 332; AO 2 X 12 Bit473
- Programmable Parameters474
- Additional Information on SM 332; AO 2 X 12 Bit475
- Analog IO Module SM 334; AI 4/AO 2 X 8/8 Bit; (6ES7334-0CE01-0AA0)476
- SM 334; AI 4/AO 2 X 8/8 Bit - Function Principle482
- Measurement and Output Type of SM 334; AI 4/AO 2 X 8/8 Bit482
- Measurement and Output Ranges of SM 334; AI 4/ AO 2 X 8/8 Bit483
- Additional Information on SM 334; AI 4/AO2 X 8/8 Bit483
- Analog IO Module SM 334; AI 4/AO 2 X 12 Bit; (6ES7334-0KE00-0AB0)484
- Programmable Parameters490
- Measurement Types and Ranges490
- Output Ranges491
- Additional Information on SM 334; AI 4/ AO 2 X 12 Bit492
- Unused Channels492
- Always Short-Circuit Unused Input Channels, and Connect These to M492
- Interference Immunity of the Analog Input Module492
Other Signal Modules493
- Module Overview493
- Simulator Module SM 374; IN/OUT 16; (6ES7374-2XH01-0AA0)494
- Dummy Module DM 370; (6ES7370-0AA01-0AA0)496
- Position Decoder Module SM 338; POS-INPUT; (6ES7338-4BC01-0AB0)499
- Isochronous Mode500
- Wiring and Block Diagrams501
- Functions of SM 338; POS-INPUT; Encoder Value Acquisition502
- Encoder Value Acquisition502
- Gray Code/Binary Code Converter502
- Transferred Encoder Value and Scaling503
- Freeze Function504
- Parametrization SM 338 POS-INPUT505
- Addressing SM 338 POS-INPUT507
- Diagnostics of SM 338; POS-INPUT509
- SM 338; POS INPUT - Interrupts511
- Technical Data of SM 338; POS-INPUT512
Interface Modules515
- Module Overview515
- Interface Module IM 360; (6ES7360-3AA01-0AA0)516
- Interface Module IM 361; (6ES7361-3CA01-0AA0)518
- Interface Module IM 365; (6ES7365-0BA01-0AA0)520
Parameter Sets of Signal Modules522
- Principles of Programming Signal Modules in the User Program522
- Parameters of Digital IO Modules524
- Parameters of the Digital Input Module SM 321; DI 16 X DC 24/125 V526
- Parameters of Digital Output Modules528
- Settings from the Digital Output Module SM 322; DO 16 X DC 24 V/0.5 a (6ES7322-8BH10-0AB0)530
- Parameters of Analog Input Modules534
- Parameters of Analog Input Module SM 331; AI 8 X RTD538
- Parameters of SM 331; AI 8 TC548
- Parameters of Analog Input Module SM 331; AI 8 X 13 Bit557
- Measuring Ranges559
- Setting of the Analog Input Module SM 331; AI 8 X 16 Bit (6ES7331-7NF10-0AB0)560
- Parameters of Analog Input Module SM 331; AI 6 X TC Isolated567
- Parameters of Analog Output Modules574
- Parameters of Analog Output Module SM 332; AO 8 X 12 Bit577
- Parameters of Analog IO Modules580
Diagnostics Data of Signal Modules583
- Evaluating Diagnostic Data of Signal Modules in the User Program583
- Structure and Content of Diagnostics Data, Byte 0 and up584
- Channel-Specific Diagnostics Data588
- Diagnosis Data from the SM 322; DO 16 X DC24 V/0.5 a (6ES7322-8BH10-0AB0)590
- Diagnostics Data of SM 331; AI 6 X TC Isolated593
- Diagnostics Data of SM 338; POS-INPUT596
Dimensional Drawings598
- Dimensional Drawings of the Mounting Rails599
- Bus Modules605
- Dimensional Drawings of the Power Supply Modules606
- Dimensional Drawings of the Interface Modules610
- Dimensional Drawings of the Signal Modules612
- Dimensional Drawings of Accessories614
Spare Parts and Accessories for S7-300 Modules616
Directive on Handling Electrostatic-Sensitive Devices (ESD)619
- Definition of ESD619
- Electrostatic Charging of the Body620
- Basic Protective Measures against Electrostatic Discharge621
Service & Support622
Safety-Relevant Symbols623
- Safety-Related Symbols for Devices Without Ex Protection623
- Safety-Related Symbols for Devices with Ex Protection624
List of Abbreviations626
- Glossary628
- Index638

Product type designation	SIMATIC
CPU	Varies by model
Memory	Varies by model
Input/Output	Varies by model
Communication	Varies by model
Programming Language	STEP 7
Operating Temperature	0°C to 60°C (varies by model)
Protection Class	IP20
Category	Programmable Logic Controller (PLC)

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