SEW-Eurodrive MOVIDRIVE compact MCH41A, System Manual

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10
System Manual – MOVIDRIVE® compact Drive Inverters
1
System overview
System Description
Overview of
series and
variants The following table gives an overview of the series and variants:
Control modes
The VFC (Voltage Mode Flux Control) and CFC (Current Mode Flux Control) control
modes are features of MOVIDRIVE
®
compact
drive inverters. The continuous calcula-
tion of the complete motor model forms the basis for both control modes.
System bus
(SBus) The system bus (SBus), which is available as standard, allows several MOVIDRIVE
®
drive inverters to be networked together. This system bus enables fast data exchange
between the units. The SEW standard unit profile MOVILINK
®
is used for communica-
tion via SBus.
MOVILINK
®
The same message format is always used with MOVILINK
®
independent of the selected
interface (SBus, RS232, RS485, fieldbus interfaces). As a result, the control software is
independent of the selected interface.
IPOS
plus®
A key feature of MOVIDRIVE
®
drive inverters is that the IPOS
plus®
positioning and se-
quence control system is integrated as standard. IPOS
plus®
enables you to control se-
quences of motion directly in the inverter close to the machine. This way, load is taken
off the higher-level controller and modular concepts can be implemented more easily.
Without
encoder input
With encoder input
for sin/cos and incre-
mental encoders
With resolver
input
With encoder input for
Hiperface, sin/cos and
incremental encoders
Without
fieldbus
MCF40A MCV40A MCS40A MCH40A
With PROFI-
BUS-DP
MCF41A MCV41A MCS41A MCH41A
With INTER-
BUS-LWL
- - - MCH42A
VFC (Voltage Mode Flux Control) control mode CFC (Current Mode Flux Control)/SERVO
control mode
Voltage-controlled control mode for AC asynchro-
nous motors with and without encoder feedback.
•
With encoder feedback
–
at least 150 % torque, even with motor at
standstill
– characteristics similar to servo operation
• Without encoder feedback
–
at least 150 % torque up to 0.5 Hz
Current-controlled control mode for AC asynchro-
nous motors and permanent-field AC servomotors.
Encoder feedback is always required.
•
at least 160 % torque, even with motor at stand-
still
• maximum precision and concentric running
characteristics right down to standstill
• servo characteristics and torque control even
for asynchronous AC motors
• reacts to load changes within a few milliseconds