Moog MSD Specification page 38

TWINsync interface. The slave sends actual values and status information to the
master via the TWINsync interface. The slave is operated either with direct
specification of the PWM duty cycles or in current-controlled mode.
6.2.11.1 TWINsync dual inverter operation modes
In the dual inverter operation mode, two inverters operate in master-slave mode.
Both inverters are connected to a common motor winding on the output side. In this
case, for the slave inverter, a distinction is made between the control modes "PWM
mode" and "ICON mode". In the PWM mode, the master sends the PWM switching
times directly to the slave. In the ICON mode, the d and q current setpoints as well as
the commutation angle measured by the master are sent from the master to the
slave. The slave the operates with a field-oriented current control without its own
encoder evaluation. The outputs of the master and slave can be connected in
parallel or in series in this case.
The following table describes the new TWINsync operation modes which can be set
via the parameter P2580 (MPRO_TWIN_Setting).
ID Value Selection text
P2580 23 MPRO_TWIN_SDI_
Master_PWM
24 MPRO_TWIN_PDI_
Master_PWM
25 MPRO_TWIN_SPDI_
Slave_PWM
26 MPRO_TWIN_SDI_
Master_ICON
27 MPRO_TWIN_PDI_
Master_ICON
28 MPRO_TWIN_SPDI_
Slave_ICON
Table 6.12: TWINsync operation modes for dual inverter operation
moog ID no.: CB08759-001 Date: 03/2023
6 TWINsync operation modes
Description
Serial dual inverter master (slave in PWM mode)
Parallel dual inverter master (slave in PWM mode)
Serial/parallel dual inverter slave (slave in PWM mode)
Serial dual inverter master (slave in ICON mode)
(not yet selectable)
Parallel dual inverter master (slave in ICON mode)
(not yet selectable)
Serial/parallel dual inverter slave (slave in ICON mode)
(not yet selectable)
No. Operation mode combinations
P2580 (master) P2580 (slave)
1 MPRO_TWIN_SDI_ MPRO_TWIN_SPDI_Slave_
Master_ICON
2 MPRO_TWIN_SDI_ MPRO_TWIN_SPDI_Slave_
Master_PWM
3 MPRO_TWIN_PDI_ MPRO_TWIN_SPDI_Slave_
Master_ICON
4 MPRO_TWIN_PDI_ MPRO_TWIN_SPDI_Slave_
Master_PWM
Table 6.13: Useful combinations of TWINsync operation modes in dual-inverter
operation
Because this concerns rather "exotic" applications, the responsible field or global
application engineer should be consulted, possibly also with assistance from the
development department.
6.2.11.2 Operation modes 23, 24, 25, 26, 27 and 28
The operation modes
SDI_PWM_MASTER (pwm mode), 23
l
PDI_PWM_MASTER (pwm mode), 24
l
SDI_PDI_PWM_SLAVE (pwm mode), 25
l
SDI_CURR_MASTER (current mode), 26
l
PDI_CURR_MASTER (current mode), 27
l
SDI_PDI_CURR_SLAVE (current mode), 28
l
are described again separately with wiring diagrams, start-up information and
related documentation in a seperate document.
Specification TWINsync module
Wiring
Inverters wired in series to a
ICON motor winding open on both sides
PWM
Inverters wired in parallel to a
ICON standard motor winding
with balance coils to provide
isolation
PWM
38