220 Actual signals and parameters
OVERFLOW
Counter moves between the minimum and maximum limits
and rolls over to the opposite limit, when either the minimum
or maximum limit is reached.
Minimum and maximum limits are set by parameters
. Greater
value from the two will be set as the maximum and the other
as the minimum.
When parameter
or either of the
limits is changed so that the change causes the value of
parameter
to be outside of the
min/max limits, the counter is assigned to the closest limit
value.
Example:
If the limits are set as shown in the figure below,
the value of parameter
changes as
follows:
• Counting up: … –> 19998 –> 19999 –> 20000 –> 100 –>
101 –> 102 …
• Counting down: … –> 102 –> 101 –> 100 –> 20000 –>
19999 –> 19998 …
, the counter limit values trigger state changes.
10
1908 COUNTER
RES VAL
Defines the value for the counter after reset.
0
0…65535
Counter value
1 = 1
1909 COUNT
DIVIDER
Defines the divider for the pulse counter.
0
0…12
Pulse counter divider N. Every 2
N
bit is counted.
1 = 1
1910 COUNT
DIRECTION
Defines the source for the counter direction selection.
DI1(INV)
Counter direction selection through inverted digital input
DI1. 1 = counts up, 0 = counts down.
-1
DI2(INV)
See selection
-2
All parameters
No.
Name/Value
Description
Def/FbEq
0
100
20000
65535
Summary of Contents for ACS355 series
Page 1: ...ABB machinery drives User s manual ACS355 drives ...
Page 4: ......
Page 16: ...16 ...
Page 32: ...32 Operation principle and hardware description ...
Page 58: ...58 Electrical installation ...
Page 74: ...74 Start up control with I O and ID run ...
Page 106: ...106 Control panels ...
Page 120: ...120 Application macros ...
Page 178: ...178 Program features ...
Page 338: ...338 Fieldbus control with embedded fieldbus ...
Page 368: ...368 Fault tracing ...
Page 404: ...404 Dimension drawings ...
Page 410: ...410 Appendix Resistor braking ...
Page 434: ...434 Appendix Permanent magnet synchronous motors PMSMs ...