36 2954 2100 01
QAS 14 - 20 Pd
7.3.4 Output terminal board
The output terminal board option is situated below the control and
indicator panel.
S2...... Emergency stop button
Push the button to stop the generator in case of an emergency.
When the button is pressed, it must be unlocked, by turning it
anti-clockwise, before the generator can be restarted. The
emergency stop button can be secured in the locked position
with the key, to avoid unauthorized use.
Q1 ..... Main circuit breaker
Interrupts the power supply to X1.1 when a short-circuit occurs
at the load side, or when the earth leak detector (30 mA) or the
overcurrent protection (QAS 14: 20 A, QAS 20: 32 A) is
activated or when the shunt trip is energized. It must be reset
manually after eliminating the problem.
X1.1... Main power supply (400 V AC)
Terminals L1, L2, L3, N (= neutral) and PE (= earthing),
hidden behind the control panel door and behind a small
transparent door.
7.3.5 Single frequency with electronic speed
control (SF)
The “Single frequency” option provides an electronic speed con-
troller which makes sure that the output frequency of the generator
is 50/60 Hz with an accuracy of 0.25 % at constant load.
R11.... Supply voltage adjust potentiometer
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 accuracy of 0.25 % 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.
Q1
X1.1
S2
Q1
X1.1
Changing the output frequency is only allowed after
shutdown.
After changing the output frequency, adjust the out-
put voltage by means of potentiometer R11 to the
required value.
0
10
30
20
0
400
200
www.atlascopco.com
!
Qc 1001
Appl. 1.00.1
R11
S12
R11
0
10
30
20
0
400
200
www.atlascopco.com
!
Qc 1001
Appl. 1.00.1
R11 R12
R12
S12
R11
!
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