ABB ACS320 series, Руководство пользователя

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Actual signals and parameters 231
4005
ERROR VALUE INV
0, 1 - 0
Selects either a normal or inverted relationship between the feedback signal and the
drive speed.
0 = NO – Normal, a decrease in feedback signal increases drive speed. Error = Ref -
Fbk
1 = YES – Inverted, a decrease in feedback signal decreases drive speed. Error = Fbk
- Ref
4006 UNITS 0…31 - 4
Selects the unit for the PID controller actual values. (PID1 parameters 0128 , 0130 , and
0132 ).
• See parameter 3405 OUTPUT1 UNIT for list of available units.
4007
UNIT SCALE
0…4 1 1
Defines the decimal point location in PID
controller actual values.
• Enter the decimal point location counting in
from the right of the entry.
• See table for example using pi (3.14159).
4008 0 % VALUE -3276.8 …3276.7 - -
Defines (together with the next
parameter) the scaling applied to the
PID controller’s actual values (PID1
parameters
0128 , 0130 , and 0132 ).
• Units and scale are defined by
parameters 4006 UNITS and 4007
UNIT SCALE .
4009 100 % VALUE -3267.8 …3276.7 - -
Defines (together with the previous parameter) the scaling applied to the PID
controller’s actual values.
• Units and scale are defined by parameters
4006 UNITS and 4007 UNIT SCALE .
Group 40: Process PID set 1
Code Description Range Resolution Default S
4007 value Entry Display
0 0003 3
1 0031 3.1
2 0314 3.14
3 3142 3.142
Internal scale (%)
100% 0%
-1000%
+1000%
4008
Scale ( 4007 )
Units ( 4006 )
4009