
Table of Contents
4VMD421H_D00138_01_M_XXEN/05.2016
3.12 Factory setting FAC ...................................................................................... 18
3.13 Erasable history memory ............................................................................ 18
3.14 Alarm LEDs show which relay is in the alarm state ........................... 18
3.15 Starting a device using a simulated alarm S.AL .................................. 19
4. Installation and connection ......................................................................... 21
5. Operation and setting .................................................................................. 25
5.1 Display elements in use .............................................................................. 25
5.2 Function of the operating elements ...................................................... 26
5.3 Menu structure ............................................................................................... 27
5.4 Display in standard mode .......................................................................... 30
5.5 Display in menu mode ................................................................................ 31
5.5.1 Parameter query and setting: overview ................................................ 31
5.5.2 Setting the response values for under and overvoltage: ................ 34
5.5.3 Setting the response values for underfrequency, overfrequency
and hysteresis ................................................................................................. 36
5.5.4 Setting fault memory/operating principle of the alarm relays ..... 37
5.5.5 Assigning alarm categories to the alarm relays ................................. 39
5.5.6 Setting the time delay ................................................................................. 41
5.5.7 Selecting the measuring method ............................................................ 42
5.5.8 Factory setting and password protection ............................................ 43
5.5.9 Re-establishing the factory settings ....................................................... 44
5.5.10 Manual activation of the preset function ............................................. 45
5.5.11 Device information query .......................................................................... 45
5.5.12 History memory query ................................................................................. 46
5.6 Commissioning .............................................................................................. 47
5.7 Preset function/ factory setting ............................................................... 48
6. Technical data VMD421H ............................................................................. 51
6.1 Data in tabular form ..................................................................................... 51
6.2 Standards, approvals and certifications ................................................ 54
6.3 Ordering information ................................................................................... 55