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ABB ACS800 Series - 11 REFERENCE SELECT: Speed Reference

ABB ACS800 Series
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Actual signals and parameters
68
DI5 See selection DI2. 5
DI6 See selection DI2. 6
DI7 See selection DI2. 7
DI8 See selection DI2. 8
DI9 See selection DI2. 9
DI10 See selection DI2. 10
DI11 See selection DI2. 11
DI12 See selection DI2. 12
AI5 Direction will reverse if the speed reference is negative; 11.03 EXT1
REF SELECT must be “AI5”.
13
FIELDBUS See selection DI2. Instead of a digital input, the command comes from
06.01 DATASET 1 WORD 1 bit 04. See chapter Fieldbus control.
14
MASTER DRV Follows the direction command from the master drive. 15
10.05 EXT1 STRT PTR Defines the source or constant for selection PARAM 10.05 of 10.01
EXT1 STRT/STOP
-255.255.31…+255.255.31
/ C.-32768…C.32767
Parameter index or a constant value:
- Parameter pointer: Inversion, group, index and bit fields. The bit
number effective only for blocks handling boolean inputs.
- Constant value: Inversion and constant fields. Inversion field must
have value C to enable the constant setting
-
11 REFERENCE SELECT
The speed reference to the winder is scaled to be proportionate to the
maximum web speed. The winder control program uses the input web
speed and the actual diameter to calculate the rotational speed
reference (rpm reference) to the drive.
Speed matching the surface speed of the Winder or Unwind Core to
the line speed is essential for tension regulation and diameter
calculation accuracy. Speed matching guarantees that the web will be
running the same rate throughout the machine, enabling the tension or
dancer regulator to control surface tension with less trim and greater
accuracy.
Parameter group 11 defines the speed reference source and scaling
parameters.
11.03 EXT1 REF SELECT Select the required source for the web speed e.g. AI or Fieldbus. The
Analog Input should be scaled to be 100% at maximum web speed
(10 VDC if AI (voltage input) is used and 20 mA if AI (current input) is
used.
For example, AI1 should be 10 VDC at 1000 ft/min (304.8 m/min) line
speed if 1000 ft/min (304.8 m/min) is the maximum web speed.
KEYPAD Control panel. The first line on the display shows the reference value. 1
AI1 Analog input AI1 (voltage). 2
AI2 Analog input AI2 (current). 3
AI3 Analog input AI3 (current). 4
AI5 Analog input AI5 (voltage or current). If joystick operation is desired,
set 10.02 EXT1 DIRECTION to “AI5”. With this done, when the input is
less than 0 VDC the direction is reverse. When the input is greater
than 0 VDC the direction is forward.
5
AI6 Analog input AI6 (voltage or current). 6
FIELDBUS 06.02 DATASET 1 WORD 2. See chapter Fieldbus control. 7
No. Name/Value Description FbEq

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