Atlas Copco QAC 1100 Sd, Instruction Manual

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Qc4002™ MkII Module, control panel
and indicators
The Qc4002™ MkII module is located inside the
control panel and communicates with a screen on
the control panel front. This control module
performs all the necessary tasks for controlling
and protecting a generator, irrespective of the use
made with it. This means that Qc4002™
MkIImodule can be used for several applications.
The Qc4002 modules have operating control of
the fuel pump for automatic supply of the internal
tank. Through lines of configuration 4350 and
4360 control module can command the automatic
shutdown of the supply tank, the instant the
percentage value of the fuel volume reaches the
stipulated amount. Any questions, looking for Atlas
Copco for the correct use of this resource.
Output terminals panels
The cubicle has a terminal panel to facilitate cable
connections. It is located under the control and
indicating instrument panel.
This circuit breaker is located inside the
cubicle, it is identified as I
Δ
N. Position O:
Interrupts the current of the main circuit
breaker Q1, when a ground connection
failure occurs.
Q1 Circuit breaker for the main circuit
It interrupts the supply current for X1 when
a short circuit occurs on the load side or when
the overload protection (720 A) is activated.
When activated, Q1 interrupts the three
phases for X1. It has to be manually reset
after clearing the problem.
X1 Main supply current
Terminals L1, L2, L3, N (= neutral)
a n d P E ( = g r o u n d c o n n e c t i o n ) ,
behind a small transparent door.
The O position of S13 switch will be only used in
connection with a ground connection failure
protection unit (e.g. integrated in a distribution
panel) or when the generator is used in parallel.
The ground connection failure protectionat the
outlet connector of a phase is not affected by S13
switch. If S13 is placed in the O position, it is very
important the existence of a suitable ground
connection for the user protection. The removal
of any ground fault protection may cause serious
injuries or even death of anyone touching the unit
or the load.
S2 Emergency stop button
Depress the button to stop the generator in
case of emergency. To have the generator
running again, release the button rotating it
counterclockwise. You can fix the emergency
stop button in the lock position with a key,
in order to avoid non-authorized use.
N13 Earth leakage relay
It detects a ground fault and activates the
main circuit breaker Q1. The detection level
can be set to 30 mA fixed with instantaneous
dropout, and it can also be set between 30 mA
and 250 mA with delayed dropout (0 - 1 s).
N13 has to be manually reset after the
elimination of the damage (reset button
marked with R). It can be overridden by
means of an earth leakage circuit breaker
(S13), marked as I
Δ
N, but it has to be monthly
tested by depressing the test button T13.
S13 Closing earth relay circuit breaker (N13).