Installation and commissioning
DIGIDRIVE
Variable speed drive
Réf. 3218 GB - 4.33 / d - 02.02
LEROY-SOMER
9
1 - GENERAL INFORMATION
1.1 - General operating principle
The DIGIDRIVE is an AC drive for
supplying induction motors.
It is an open loop flux vector drive.
Due to its processing power, the drive
controls the magnetising current and the
active current separately with a standard
induction motor.
The speed and position of the rotor are
calculated to control the torque and speed
of the motor.
This open loop mode of operation gives
very high performance levels and is
suitable for most applications.
1.1.1 - Power module
The DIGIDRIVE uses an IGBT transistor
inverter bridge.
This leading-edge technology considerably
reduces the noise and temperature rise of
the variable speed motor.
The performance of the DIGIDRIVE is
totally compatible with use in all 4
quadrants of the torque-speed plane (from
1.5M/TL rating upwards).
During periods of operation as a generator,
the energy restored by the motor is
dissipated by the resistors.
1.1.2 - Synoptic view
Internal
interface
Internal
interface
I/O control
Mains
supply
ASIC
PWM
Switching mode
power supply
Control
Operator
display
Inverter
interface
+
Control board
Power board
M
DCCT
External braking resistor
(option from 1.5M/TL
upwards)
M
IGBT
To Next Page
Loading...
Need help?
General
