30 Operation principle and hardware description
Single-line circuit diagram of the drive
Single-line diagram of R11
Q1 Main switch-disconnector (switch-disconnector and separate fuses in frame R11)
F1 AC fuses
F21 Auxiliary voltage supply fuses
F22 Auxiliary circuit protection switch
Q2 Line contactor inside the drive module. Q2 is controlled by the line-side converter control unit. If
Start (Running) command is given to the drive, Q2 is closed and the line-side converter starts to
modulate.
Q3 Charging circuit contactor (with options +Q951, +Q952, +Q978) or switch (as standard)
R11 Optional common mode filter (option +E208)
R12 Optional du/dt filter (option +E205) or sine filter (option +E206)
T1 Drive module. Contains drive module (line-side converter + motor-side converter), LCL filter and
line contactor.
T21 Auxiliary voltage transformer supplying 24 V and 230/115 V control voltage for, eg, cabinet fan(s),
control devices and I/O extension adapter module.
1 Charging circuit
2LCL filter
3 Line-side converter
4 Motor-side converter
Pulse encoder for FEN-31 HTL incremental encoder interface module (option +L502)
Motor temperature sensor
4
32
1
M
3
~
Q1
Q3
Q2
T
F1
T1
T21F21 F22
R11
R12
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