A = 100%
A = 15%
A = 10%
A = 0%
25
27
29
31
25,6
25,9
(psi)
14.SUCTION CONTROLS
14.4.1.3 Linear mode connected to a VCC-Analog compressor:
The VCC-Analog is used to drive frequency inverters or modules to control compressors that receive a signal between 0-10V. The control uses the
parameters of the setpoint value and the hysteresis of the VCC compressor. It is also possible to connect a digital input for the Start-stop output of the
VCC compressor.
Example
1.2.x.1 Control mode: Linear
1.2.x.2 Setpoint: 25 psi
1.2.x.5 VCC hysteresis: 6 psi
1.2.x.9 Integral time: Off
1.2.x.15 Number of compressors: 1
1.2.x.22 Modulation of compressor 1: VCC-Analog
1.2.x.36 Compressor 1 analog output: A1
14.4.1.4 Linear mode connected to a VCC-Digital compressor.
The VCC-Digital is used to drive compressors with capacity modulation actuated by PWM solenoid valves. The control uses the parameters of the
setpoint value and the hysteresis of the VCC compressor.
Example: Compressor with modulation in 2 valves with 50% capacity each.
1.2.x.1 Control mode: Linear
1.2.x.2 Setpoint: 25 psi
1.2.x.5 Hysteresis of the VCC compressor: 6 psi
1.2.x.15 Number of compressors: 1
1.2.x.22 Modulation of compressor 1: PWM 0 I 10...100 (2V)
1.2.x.37 Compressor 1 main output: O1
1.2.x.37 Compressor 1start-stop main output: O1
1.2.x.67 VCC: Starting time: 60s
1.2.x.68 VCC: Validation time: 0s
1.10.x.2 Minimum value of the analog output: 10%
1.10.x.3 Starting value of the analog output: 15%
1.10.x.4 Maximum value of the analog output: 100%
1.2.x.38 Compressor 1 auxiliary output 1: O2
1.2.x.39 Compressor 1 auxiliary output 2: O3
1.2.x.69 VCC-Digital: Minimum Capacity: 10%
1.2.x.70 : VCC-Digital Control period: Auto
1.2.x.71 VCC-Digital: Minimum valve actuation time: 5 sec
1.2.x.72 VCC-Digital: Maximum no-load time: 120 sec
25
28
31
25,6
(psi)
P
V1
V2
Minimum no-load time
Modulating
Modulating
Modulating
Modulating
24
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