Control Locations - ABB ACS 400 User Manual

Control Locations

The ACS 400 drive can receive control information from multiple sources, including digital I/O,
analog I/O, keypad, and Modbus fieldbus.
To control the ACS 400 via the serial communication channel 1 (Modbus fieldbus), it must be
programmed to accept control commands and/or frequency references from this channel. To
accept control from serial communications, ACS 400 must be in remote control.
The necessary parameters and their usage are listed in Table 14. Before any control commands
can be given through serial communication channel 1, parameter 5006
must be set to
STD MODBUS
Further information on all the parameters and their alternative settings can be found under
"ACS 400 Complete Parameter List" on page 51.
Table 14 Parameters for control command source selection.
Code Parameter Name
Group 50
COMMUNICATION
5006
COMM COMMANDS
Group 10
COMMAND INPUTS
1001 1
EXT COMMANDS
1002 2
EXT COMMANDS
1003
DIRECTION
Group 11
REFERENCE SELECT
1102 1/ 2
EXT EXT SEL
1103 1
EXT REF SELECT
100
.
Setting for
Alternative
Standard
Settings
Modbus
,
NOT SEL STD MODBUS
,
STD MODBUS
DDCS
NOT SEL COMM
1
DI
...
COMM
NOT SEL COMM
1
DI
...
COMM
FORWARD REQUEST
REVERSE
REQUEST
1
DI COMM
...
COMM
KEYPAD COMM
1
AI COMM
... or
COMM COMM
+ 1
COMM AI
* 1
COMM AI
COMM COMMANDS
Function/Information
Defines the source for serial
communication commands in general.
Enables the Control Word (except bit 11)
when EXT1 is selected as control
location.
Enables the Control Word (except bit 11)
when EXT2 is selected as control
location.
Enables rotation direction control as
defined by parameters 1001 and 1002.
Enables external control location EXT1/
EXT2 selection by Control Word bit 11.
, Fieldbus reference 1 is used when EXT1
+ 1 is selected as control location. See
AI
section References below for information
* 1 on the alternative settings.
AI
value
ACS 400 User's Manual