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Program features 53
External control
When the drive is in external control, control commands are given through:
• the I/O terminals (digital and analog inputs)
• the fieldbus interface (via the embedded fieldbus interface or an optional fieldbus
adapter module)
• external panel (assistant panel).
Two external control locations, EXT1 and EXT2, are available. You can select the
sources of the start and stop commands separately for each location by setting
parameters
20.01
...
20.10
. The operating mode can be selected separately for each
location, which enables quick switching between different operating modes, for
example speed and torque control. Selection between EXT1 and EXT2 is done via
any binary source such as a digital input or fieldbus control word by parameter
19.11
Ext1/Ext2 selection
. You can also select the source of reference for each operating
mode separately, and the operation mode.
Settings
Parameters
20.01
...
20.10
and
19.11
Ext1/Ext2 selection
(page
154
).
Block diagram: Run enable source for EXT1
The figure below shows the parameters that select the interface for run enable for
external control location
EXT1
.
Settings
Parameters
19.11
Ext1/Ext2 selection
(page
154
) and
20.01
…
20.10
.
Timed function 1
…3
Supervision 1
…6
Other [bit]
DI1
DI0 2
EXT1
Run enable
EFB MCW bit 3
Select
20.12
DI1
DIO2
FBA A MCW bit 3
0
1
Off
Selected
Embedded fieldbus
Timed function
A bit in a parameter
Supervision
Fieldbus adapter
ACS380 FW.book Page 53 Friday, May 4, 2018 4:18 PM
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