Mode “-3 Electronic Gear: Slave” implements a gearing operation for a slave drive to a
master drive. The master of the Electronic gear must be connected to the Slave d
e-
vice via wire or Systembus (recommended). The master input in the Slave device is
selected via Master Position Source 1122.
Master Position Source
1122
1 -
Encoder 1
The current speed and position of the master drive is
taken over from encoder input 1.
2 -
The current speed and position of the master drive is
taken over from encoder input 2 or resolver.
11 -
RxPDO1.Long1
extrapolated
The current position of the master drive is taken over by
the process data channel RxPDO1.Long1 of the system
bus. Additionally, the data received are extrapolated,
even for slow settings of TxPDO Time of the master.
Depending on the application, select a setting of the cor-
responding TxPDO.Long of the master:
− "606 – Internal Act. Position (16/16)", mechanical
position of master drive. Value doesn’t change if the
master makes a homing.
− "607 – Act. Position (16/16)", mechanical position of
master drive. Value changes if the master makes a
homing.
− "620 – motion profile gen.: Internal Ref. Position",
reference position of master drive; advantage: im-
proved controller properties. Value doesn’t change if
the master makes a homing.
− "627 – motion profile gen.: Ref. Position", reference
position of master drive; advantage: improved control-
ler properties. Value changes if the master makes a
homing.
The settings 607 and 627 are only to be used in excep-
tional cases. In most applications sources 606 and 620
are more useful.
In setting "11 - RxPDO1.Long1 extrapolated" of parameter Master Position Source
1122
the system bus synchronization must be set to 1 or 10 to ensure a reliable
function of Operation Mode 1180.
0 -
Off
1 -
RxPDO1
10 -
SYNC
1)
If the error message "F1453 Systembus-Synchronization not activated" is dis-
played when the slave drive is started, one of the operation modes 1, 2, 3 or 10
must be selected.
2)
Synchronization of processing with data telegram or cyclic sending of SYNC tele-
gram.
3)
Not recommended for el. gear because no extrapolation done.
218 CM-CAN ACU 04/13