14.SUCTION CONTROLS
14.4.5 Progressive algorithm mode:
The Progressive Algorithm is an ideal control mode for systems that use compressors of different capacities for suction. The Progressive Algorithm
considers the capacities of each compressor to supply the thermal demand of the system, seeking to optimize the use of unloader valves, minimizing
the number of compressors starts and shutdowns. This mode can work an an work an work with up to 6 compressors per suction line where one of them
can be configured Variable Capacity Compressor (VCC). When compressor 1 is configured as VCC, it is the first to be activated and the last to be shut
off. Progressive Algorithm Mode uses setpoint and a single hysteresis ‘’AP control mode hysteresis’’.
Application example:
1.2.x.18 Compressor 3 capacity: 20Kw
1.2.x.22 Compressor 1 modulation: On/Off 50 I 100
1.2.x.23 Compressor 2 modulation: On/Off 50 I 100
1.2.x.24 Compressor 3 modulation: On/Off 50 I 100
1.2.x.28 Compressor 1 activation mode: Incremental
1.2.x.29 Compressor 2 activation mode: Incremental
1.2.x.30 Compressor 3 activation mode: Incremental
1.2.x.1 Control mode: Progressive Algorithm
1.2.x.2 Setpoint: 25psi
1.2.x.6 AP Control Mode Hysteresis: 10psi
1.2.x.9 Integral time: Off
1.2.x.15 Number of compressors: 3
1.2.x.16 Compressor 1 capacity: 8Kw
1.2.x.17 2 Compressor capacity: 12Kw
(power delivery)
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