AKO AKO-D14545 - Neutral Zone Mode

D145H4502 Ed. 01
11
Neutral zone mode
WITHOUT FREQUENCY CONVERTER
In this mode, a neutral zone is defined, whose lower limit is the Set Point minus the bandwidth, and whose upper
limit is the Set Point plus the bandwidth. While the reading of probe 1 remains in that zone, no stages or compressors
are connected or disconnected.
If the upper limit is exceeded, the controller activates the different stages/compressors separated by the interval
defined in parameter t03 (red line) until returning to the neutral zone.
If the lower limit is exceeded, the controller deactivates the different stages/compressors separated by the interval
defined in parameter t04 (green line) until returning to the neutral zone.
In order to deactivate a stage/compressor, the interval t01 must have passed, and interval t02 defines the minimum
interval between starts of the same stage/compressor.
t03 t03
t04 t04
E01 E01
SP+E06
SP-E06
SP
Direct operation
(C7=0)
Inverse operation
(C7=1)
stage / compressor 4 ON
Upper limit
Upper limit
Neutral zone
stage / compressor 3 ON
stage / compressor 2 ON
stage / compressor 1 ON
Pressure in Probe 1
Stages /
Compressors