Instruction manual

42 2954 2370 00
QAS 30 - 45 - 60 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.... Speed adjustment
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.
Circuit breaker Q1 does not only interrupt the
power supply towards X1, but also towards X2, X3,
X4, X5 and X6.
Make sure to switch on circuit breakers Q1, Q2, Q3,
Q4, Q5 and Q6 after starting the generator when
power supply is done by means of X2, X3, X4, X5 or
X6.
X3
Q2
Q5 Q6
Q3 Q4
X4
X5 X6
X2
Q6
Q5
Q2
Q3 Q4
X6X5X4X3X2
!
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
!