Shaft Syncro - ABB ACS800 Firmware Manual

Index Name/Selection
77.20 BASE SPEED
0.0 ... 18000.0 rpm

78 SHAFT SYNCRO

78.01 SYNCRO CONTROL
OFF
ON
78.02 SYNCRO GAIN
0... 100.00
78.03 SHAFT SCALE
0... 100.00
78.04 POS SCALE
0.1 ... 10000.0 P/mm
78.05 POS CORR MAX LIM Defines the maximum limit for the position correction value. The difference
0 ... 100.0 mm
78.06 POS CORR MIN LIM
-100.0 ... 0 mm
78.07 SYNC ERR FLT DLY
0 ... 10 s
78.08
SYNC CORR SCALE
Description
Defines the base speed in rpm. This value is used to check for the actual motor
current when the motor speed crosses this value. The motor current when the
actual speed crosses this base speed in either forward or reverse direction is
checked for a period of Par.
used along with parameters
forward and reverse directions. If the parameters
configured properly in the correct sequence, the speed is always limited to this
value. For more information, see section
Setting range in rpm.
Settings for Shaft synchronisation. See section
supervision mismatch on page
for the function to be active.
Defines whether the Synchro control is active or not. If this parameter is set to
OFF, the position error calculation, position correction, and synchronisation
error fault functions are not operational. This parameter should be active for
parameter 10.14 to be functional.
Synchro control is not selected
Synchro control is selected
Defines the gain for the Synchro controller (P -Controller). Only used in
Follower drives. See section
mismatch on page 93.
Setting range
Defines the scaling factor used for the shaft position in the Follower drives. The
scaling factor should be calculated as the ratio between the Master speed in
m/min or mm/min at the maximum speed defined to that of the Follower drive.
This factor is multiplied with the speed reference in the Follower drive only
when the Synchro control is on. Used only in Follower drives. See section
Control location EXT1/EXT2 supervision mismatch
Setting range
Defines the position scaling factor for the actual position value. The scaling
factor should be calculated as number of Pulses Per Unit (Pulses/mm). See
section Actual position configuration based on a motor encoder signal
91.
Setting range in pulses/mm
between the Master and Follower position in unit (mm) is limited to this value
before its given as a speed correction factor to the Follower speed loop.
Setting range in mm
Defines the minimum limit for the position correction value. The difference
between the Master and Follower position in unit (mm) is limited to this value
before its given as a speed correction factor to the Follower speed loop.
Setting range in mm
Defines the time delay for the generation of SYNC FAULT when the absolute
difference between the Master and Follower position in unit (mm) is greater
than what is defined in Par. 78.09. The fault will be generated in respective
Follower drives.
Setting range in seconds
Defines the scaling factor which will be used for the final speed correction
reference in slave speed loop. Scaling value will correspond to a correction of
that rpm for a position error of 1 mm.
77.03 HOLD RAMP. This motor current is further
77.04 ... 77.19 to calculate the speed limit in
77.04
Load speed control
Control location EXT1/EXT2
93. The drive has to be in EXT2 control location
Control location EXT1/EXT2 supervision
on page
FbEq
... 77.19 are not
on page 123.
0 ... 180000
0
1
0... 10000
93.
0... 100000
on page
1 ... 100000
0 ... 1000
-1000 ... 0
0 ... 100
Actual signals and parameters
209