H - I - J PROGRAMMER’S MANUAL V8.94.11-
- 70 -
Variable system parameters
Explanation, further submenus
Settings needed for the remote control of the equipment. Equipments connected to the same bus
must have different identifiers, but identical data transmission rates!
11-5-2 baudrate
Data transfer rate
9k6Baud
19k2Baud
38k4Baud
11-5-3 mode
Communication mode of the MOD bus
11-5-6 parity
Communication parity bit of the MOD bus
Setting of the parameters connected with the PWM output voltage.
11-6-1 carrier frequency
This menu item sets the switching frequency of
the frequency converter end stage.
11-6-2 type
* flat-top in case of VLD and VHD types only
symmetric
mixed
flat-top *
11-6-3 changing frequency
Setting the switch-over frequency is necessary at
mixed The modulation. is symmetrical below and
flat-top type above.
11-6-4 dead time compensation
none: Compensation switched off.
software: Estimated compensation of the
threshold voltage of the diode and the
IGBT, and the switch-over times.
hardware: The equipment measures back the
place of the switch-over and the
compensation will be made based on
this. This is to be used in signal
transmitter or in vector mode in order to
accurately establish the voltage getting
on the motor.
This item permits the automatic modification of the motor frequency so that the rotation speed
remains relative stable. The degree of the compensation is adjustable but care has to be taken at
overcompensation (tendency to swinging, increase of the rotation speed upon load etc.)
11-7-2 measure
The slip calculated on the nominal and
synchronous rotation speed is the 100%, therefore
the right setting of the nominal rotation speed is
very important. (menu 6-5)
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