Technical Manual
Page 28
VC
Valve
Control
C01
03.01
AC
%
CP:
OP:
0
0
V2:
V3:
80
70
NV:
4
V4:
60
V1:
90
For ‘Poppet’ valve compressor regulation the
control percentage value is used to determine
the ‘steps’ in valve control outputs. The
‘display percentage’ is determined by the
‘steps’ in accordance with the set ‘step’
percentage values (V1 to V4) and the number
of valves (NV).
100.0
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
%
V2
V1
100%
Control
Display %
2 x Valve
100.0
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
%
3 x Valve
V3
V2
V1
100%
Control
Display %
100.0
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
%
4 x Valve
V3
V2
V1
100%
Control
Display %
16.7
33.3
50.0
66.7
83.3
V4
CP
control
percentage
(view
only)
OP
output
percentage
(view
only)
NV
number of valves (2, 3 or 4)
V1
percent output when valve V1 is
activated
V2
percent output when valves V1 and
V2 are activated
V3
percent output when valves V1 to V3
are activated
V4
percent output when all valves V1 to
V4 are activated
The valve control output percentages (V1 to
V4) determine the output display percentage
value as ‘poppet valve’ outputs are activated in
responce to changes of the ‘control
percentage value’.
If the number of valves is less than four, the
unused valve percentage values are ignored.
For example: if number of valves = 2 then V3
and V4 parameters are ignored.
Valve control is only applicable when the
regulation type is set to ‘V’ mode.
In ‘V’ mode the Output Percentage ‘User’
menu item will show a % value dependant on
the set ‘V1’ to ‘V4’ percentage values. The
display output percentage value will show the
set percentages as the valves are activated in
accordance to changes of the control
percentage value. The Output Percentage
value will show 100% when no valves are
activated and 0% when the compressor is off
load.
