ABB ACS140 - Page 87

78
Code Description
4019 SET POINT SEL
Set point selection. Defines the reference signal source for the PID controller.
Note! When PID regulator is by-passed (parameter 8121
REG BYPASS CTRL), this
parameter has no significance.
1 =
INTERNAL
Process reference is a constant value set with parameters 4020 INTERNAL
SETPNT1, 4021 INTERNAL STPNT2, 4022 INTERNAL SETPNT SEL.
2 =
EXTERNAL
Process reference is read from a source defined with parameter 1106 EXT REF2
SELECT. The ACS140 must be in remote mode (REM is shown on control panel
display).*
* Process reference to PID controller can also be given from the control panel in
local mode (LOC is shown on control panel display) if the panel reference is
given as percentage, i.e. value of parameter 1101
KEYPAD REF SEL = 2 (REF2
(%)).
4020,
2021
INTERNAL SETPNT1, iNTERNAL SETPNT2
Sets a constant process reference (%) for the PID controller. PID controller
follows either one of these references if parameter 4019
SET POINT SEL is set to
1 (
INTERNAL), see also parameter 4022 INTERNAL SETPNT SEL.
4022 INTERNAL SETPNT SEL
Selects the internal setpoint.
1..5 = DI1..5
Internal setpoint selection is done through digital input (DI1 to DI5). When digital
input is deactivated, parameter 4020
INTERNAL SETPNT1 is being used. When
digital input is activated, parameter 4021
INTERNAL SETPNT2 is being used.
6 =
SETPNT1
4020
INTERNAL SETPNT1 is used as internal setpoint.
7 =
SETPNT2
4021
INTERNAL SETPNT2 is used as internal setpoint.
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