![Emerson SI-EtherCAT User Manual Download Page 45](http://html.mh-extra.com/html/emerson/si-ethercat/si-ethercat_user-manual_103938045.webp)
SI-EtherCAT User Guide
45
Issue Number: 2
Sa
fe
Introd
Me
ch
El
G
P
D
A
Pa
ra
D
G
In
7.3
Common profile features
7.3.1
Sequencing control
These are the supported objects used to control the drive:
Table 7-6 Sequencing control supported objects
The behavior of the sequencing control is shown in Figure 7-1
page 46. This state machine indicates how the drive will be controlled. For clarity the Statusword is
abbreviated to ‘SW’ in the diagram.
When in the ‘QUICK STOP ACTIVE’ state, the currently selected mode of operation indicates how
a quick stop function should be handled. When the drive is stopped, and the Quick stop option code
doesn’t indicate that the state should remain at ‘QUICK STOP ACTIVE’, the state will move to
‘SWITCH ON DISABLED’.
When in the ‘OPERATION ENABLED’ or ‘QUICK STOP ACTIVE’ states it is not possible to change
the
mode_of_operation
object. This is to ensure that the motor is stopped before changing the
operation mode. The mode_of_operation object will be read in all CiA402 states so that the
operating mode can be changed at any time, which is necessary for homing: some axes (e.g.
vertical axes) have to be homed and start ordinary positioning operation without the need to
remove power from the motor, which, on a vertical axis, might allow a tool, etc, to fall and be
damaged or cause damage; however, the state machine will not perform a mode change until the
motor is at zero speed, as far as can be determined; the purpose of this requirement is to prevent
motion discontinuities that might occur if the motor is being moved when the mode is changed.
The SI-EtherCAT master device must be in the operational state before the state machine can
move from the ‘SWITCH ON DISABLED’ state to the ‘READY TO SWITCH ON’ state. If the master
leaves the operational state while the state machine is in the ‘SWITCH ON’, ‘OPERATION
ENABLE’ , ‘QUICK STOP ACTIVE’ or ‘READY TO SWITCH ON’ state then the option will transition
to the ‘SWITCH ON DISABLED’ state. This implies that the drive will be inhibited and the motor will
coast.
Index
Name
6040
Controlword
6041
Statusword
605B
shutdown_option_code
605C
disable_operation_option_code
605A
quick_stop_option_code
605E
fault_reaction_option_code
6060
modes_of_operation
6061
modes_of_operation_display
6080
max_motor_speed
6084
profile_deceleration
6085
quick_stop_deceleration
6502
supported_drive_modes
Summary of Contents for SI-EtherCAT
Page 1: ...User Guide SI EtherCAT Part Number 0478 0152 02 Issue Number 2 ...
Page 105: ......
Page 106: ...0471 0152 02 ...