ABB ACS 400 User Manual page 121

Ac drives for speed control
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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
significance.
1 =
INTERNAL
Process reference is a constant value set with parameter 4020
2 =
EXTERNAL
Process reference is read from a source defined with parameter 1106
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
= 2 (
REF SEL
REF
4020 INTERNAL SETPNT
Sets a constant process reference (%) for the PID controller. PID controller follows this reference if
parameter 4019
Wake-up level
SLEEP LEVEL
parameter 4014
Figure 45 Sleep function operation.
110
2 (%)).
is set to 1 (
SET POINT SEL
PID input (Process actual value)
PID Output (Output frequency)
t
=
SLEEP DELAY
d
http://nicontrols.com
REG BYPASS CTRL
INTERNAL SETPNT
).
INTERNAL
WAKE
parameter 4017
, parameter 4013
t < t
t
d
d
STOP
), this parameter has no
.
2
. The ACS 400 must
EXT REF
SELECT
-
UP DELAY
Time
Time
START
ACS 400 User's Manual
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