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Table of Contents

RCM420_D00057_03_M_ XXEN/03.2021

3.2.10 Password protection (on, OFF) ................................................................. 17

3.2.11 Factory setting FAC ...................................................................................... 17

3.2.12 Erasable history memory ............................................................................ 17

3.2.13 External, combined test/reset button T/R ............................................ 17

3.2.14 Fault memory .................................................................................................. 17

3.2.15 Additional cascaded measuring current transformer ...................... 18

4. Installation and connection ......................................................................... 19

5. Operation and setting .................................................................................. 22

5.1 Display elements in use .............................................................................. 22

5.2 Function of the operating elements ...................................................... 23

5.3 Menu structure ............................................................................................... 24

5.4 Display in standard mode .......................................................................... 25

5.5 Display in menu mode ................................................................................ 26

5.6 Parameter settings ........................................................................................ 28

5.6.1 Response value setting for overcurrent ................................................ 28

5.6.2 Setting the fault memory and alarm relay operating mode .......... 30

5.6.3 Assigning alarm categories to the alarm relays ................................. 31

5.6.4 Set the time delays ....................................................................................... 33

5.6.5 Changeover: overcurrent/undercurrent/window mode ................ 34

5.6.6 Setting the correction factor for an additional cascaded current

transformer .................................................................................................... 34

5.6.7 Factory setting and password protection ............................................ 35

5.6.8 Device information query (Example) ..................................................... 36

5.6.9 History memory query ................................................................................. 37

5.7 Commissioning .............................................................................................. 37

6. Data .................................................................................................................. 38

6.1 Factory setting ............................................................................................... 38

6.2 Error codes ....................................................................................................... 39

6.3 Technical data ................................................................................................. 40

6.4 Standards, approvals and certifications ................................................ 44

Bender rcm420 User Manual

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