Issue 07/04  Table of Contents 
MICROMASTER 420    Operating Instructions   
6SE6400-5AA00-0BP0 
11 
Table of Contents 
 
1
  Overview ................................................................................................................ 17 
1.1  The MICROMASTER 420....................................................................................... 18 
1.2  Features.................................................................................................................. 19 
2  Installation ............................................................................................................. 21 
2.1  General ................................................................................................................... 23 
2.2  Ambient operating conditions ................................................................................. 23 
2.3  Mechanical installation............................................................................................ 25 
2.4  Electrical installation ............................................................................................... 27 
3  Functions............................................................................................................... 35 
3.1  Parameters ............................................................................................................. 38 
3.2  Operator panels for MICROMASTER..................................................................... 52 
3.3  Block diagram ......................................................................................................... 56 
3.4  Factory setting ........................................................................................................ 57 
3.5  Commissioning ....................................................................................................... 59 
3.6  Inputs / outputs ....................................................................................................... 87 
3.7  Communications ..................................................................................................... 95 
3.8  Fixed frequencies (FF)............................................................................................ 99 
3.9  Motorized potentiometer (MOP) ........................................................................... 102 
3.10  JOG....................................................................................................................... 104 
3.11  PID controller (technological controller)................................................................ 106 
3.12  Setpoint channel ................................................................................................... 110 
3.13  Motor holding brake (MHB)................................................................................... 119 
3.14  Electronic brakes .................................................................................................. 122 
3.15  Automatic restart................................................................................................... 127 
3.16  Flying restart ......................................................................................................... 129 
3.17  Closed-loop Vdc control........................................................................................ 131 
3.18  Monitoring functions / messages .......................................................................... 133 
3.19  Thermal motor protection and overload responses.............................................. 135 
3.20  Power module protection ...................................................................................... 139 
3.21  Open-loop/closed-loop control technique ............................................................. 143