Engineering manual - UniSAB III 1.10.8
130/346
001930 en 2021.06
Compressor control and surveillance
Fig. 19: Capacity vs speed diagram,
SMC 116 E with CFA 30/90
coupling.
Capacity vs speed diagram
, SMC 11 6 E VSD w ith C F A30/90 coupling
Minimum speed: 500 rpm
Speed
(rpm)
Capacity
%
0
0
5
1
0
0
0
1
0
0
5
0
0
1
0
2
0
3
0
4
0
5
0
6
0
7
0
8
0
9
0
10
0
Black
li n e : S P E E D mo d e (op t i mi sed f o r be st r egula t i on)
Red line: S
T EP mode (optimised for best COP)
4
cyl
8
cyl
Blue line: both SPEEDand STEP mode
Dashed lines: transient operation only
Note:
Actual allowed speed range depends on operating conditions and motor selection.
12
cyl
16
cyl
Dotted red line: regulation by utilising total
unloading and/or compressor
start/stop
Green
line: requires a motor able to give full torque at 500 rpm
16
cyl
12
cyl
Summary of Contents for SABROE Unisab III Control
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