4.5.4
Hold function: “Freezes” the outputs
The current output is “frozen” in the setup
mode and during calibration, i.e. the last
current value is constantly output. HOLD
appears on the display.
Note:
•
Hold settings can be found in
chap. 5.6, function S2.
•
During automatic operation, all
contacts will go to their normal
positions.
•
An active hold has priority over all
other automatic functions.
•
With every hold, the I component
of the controller is set to zero.
•
A possibly accumulated alarm
delay is reset to “0".
•
The hold function can also be
activated externally via the hold
input (see connection diagram in
Fig. 3.10; digital input 1).
•
The manual hold (field S3) remains
active even after a power failure.
UM253ED4.CHP
Liquisys M CUM 223 / 253
Operation
Hauser
21
