Bender ISOSCAN W Series - Page 2

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2 EDS44x_D00201_10_M_XXEN/11.2023

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Table of Contents3
General Information7
How to Use the Manual7
Indication of Important Instructions and Information7
Signs and Symbols7
Service and Support7
Training Courses and Seminars8
Delivery Conditions8
Inspection, Transport and Storage8
Warranty and Liability8
Disposal of Bender Devices9
Safety9
Function10
Intended Use10
Features10
Areas of Application10
Standards10
System Variants11
System Properties11
Compatibility12
Operating Principle of the EDS System13
Schematic Diagram of an EDS System15
Device Overview16
External Dimensions of EDS4416
View and Connections of EDS4417
View and Connections of EDS4418
Mounting19
General Information19
Installation Clearances19
Screw Mounting20
DIN Rail Mounting21
Connection of the BB Bus21
Connection to the Voltage Supply22
Connection of the X1 Interface (I1, I2, A, B, M22
Connection of the Relays23
BS Bus Termination23
Connection of the X2 Interface (K1-12/L1-12)24
Connection of CTAC24
Connection of Measuring Current Transformer CTBC26
Connection of CTAF27
Connection to a 3(N)AC System28
Connection to an AC System29
Connection to a DC System30
Connection Example: ISOMETER® Iso685-D-P, EDS440-S, IOM441-S and EDS440-L31
Display and Alarm Messages32
Display Elements EDS4432
Operating and Display Elements EDS4432
Standard Display in Operating Mode33
Standard Display EDS4433
Alarm Messages34
Insulation Fault (ALARM IΔL )34
Residual Current Exceeded (ALARM I Δn )35
Connection Fault of the Current Transformers35
Device Error, BB Bus Error36
Device Error, Failure BS Bus Master37
Error Message37
Acoustic Alarm Message37
Commissioning38
Requirements for Reliable Insulation Fault Location38
Before Switching on38
Switching on39
Steps for Commissioning ISOMETER® and EDS39
Periodic Verification40
Device Communication41
RS-485 Interface41
Bender Sensor Bus (BS Bus)41
Modbus RTU42
Operation43
Reading out and Setting the BS Address43
Reading out a BS Address43
Setting a BS Address44
Extended Address Range (Offset = 80)46
Display and Change of Transmission Protocols47
Displaying the Current Transmission Protocol47
Changing the Transmission Protocol48
Resetting Saved Alarm Messages (RESET Button)48
Deactivating the Buzzer (EDS4448
Running a Test (TEST Button)48
Settings50
EDS Settings on the ISOMETER50
Locating Current Injector Settings50
Trigger Function51
Fault Memory51
Settings of Inputs and Outputs of the EDS4451
Digital Inputs of the EDS4451
Digital Outputs of the EDS4452
Factory Settings54
Alarm Messages56
Diagrams57
Response Sensitivity Curves57
Characteristic Curves EDS440 for 3AC Systems58
Characteristic Curves EDS440 for AC Systems60
Characteristic Curve of EDS440 for Low Voltages in DC, AC and 3NAC Systems61
Characteristic Curves EDS440 for DC Systems62
Characteristic Curves EDS441 for AC Systems65
Characteristic Curves EDS441 for DC Systems66
Characteristic Curves of EDS441-LAB for AC Systems68
Characteristic Curves EDS441-LAB for DC Systems69
Response Values of EDS440-LAF for DC Systems71
Response Values of EDS440-LAF for AC Systems71
Fault Curve EDS440 and EDS44172
Technical Data73
Technical Data ISOSCAN® EDS440 and EDS44173
Standards and Certifications79
Ordering Data80
Insulation Fault Locators80
Accessories80
Measuring Current Transformers81
Change History83

Bender ISOSCAN W Series - Page 2

Table of Contents