Atlas Copco QAS 80 - 100 Pd - Page 40

40 2954 2380 00
QAS 80 - 100 Pd
7.3.5 Single frequency with electronic speed
control (SF)
The “Single frequency” option provides an electronic speed con-
troller which improves the output frequency of the generator at 50/
60 Hz at a constant load.
R11.... Supply voltage adjust potentiometer
See “Electronic speed regulator”.
R12.... Voltage adjustment
Allows to adjust the output voltage.
7.3.6 Dual frequency with electronic speed
control (DF)
The "Dual frequency with electronic speed control" option allows
the unit to work at 50 Hz or at 60 Hz with an improved accuracy at
constant load. The frequency selection is done by means of switch
S12.
R11.... Speed adjustment
See “Electronic speed regulator”.
R12.... Voltage adjustment
Allows to adjust the output voltage.
S12.... Frequency selector switch (50 Hz/60 Hz)
Allows to choose the frequency of the output voltage: 50 Hz or
60 Hz.
7.3.7 Electronic speed regulator
The electronic speed regulator makes sure that the output frequency
of the generator is 50/60 Hz, independent of the amount of load.
Single frequency with electronic speed control is
standard for the QAS 100 Pd.
0
10
30
20
0
10
30
20
0
10
30
20
0
400
200
www.atlascopco.com
!
Qc 1001
Appl. 1.00.1
F4
R11 R12
S20
A1
P1 P2 P3 P4
S4
S20
R11
R12
!
Changing the output frequency is only allowed after
shutdown.
After changing the output frequency, adjust the
output voltage by means of potentiometer R12 to the
required value.
0
10
30
20
0
10
30
20
0
10
30
20
0
400
200
www.atlascopco.com
!
Qc 1001
Appl. 1.00.1
F4
R11 R12
S20
A1
P1 P2 P3 P4
S4
S12
R11
R12
S20
S12
!