Atlas Copco QAS108 Pd(S) Mk II Manual De Instrucciones página 18

QAS108 Pd(S) Mk II
The different positions of the starter switch ST are:
– : used to select normal start and to disable remote start.
– O : used to switch off the power supply from the battery.
The unit will not be able to start up.
– : used to select remote start.
L1
L2
L3
L4
Hz >
L5
L6
L7
L8
To start up the unit locally, without using the remote start/stop
switch, proceed as follows:
– Switch off circuit breaker Q1. This is not necessary when a
plant contactor is installed between Q1 and the load.
– Put the starter switch in position
preheating cycle which takes 12 seconds.
– After the preheating period, the unit will start. The starting
attempt will take maximum 12 seconds.
– Approximately 15 seconds after starting (stabilisation time
for the generator), the timer relay closes the voltage free
contact and the plant contactor is energised (if installed).
– Switch on circuit breaker Q1 in case no contactor is installed.
To stop the unit when the starter switch is in position
ceed as follows:
– Switch off the load.
– Switch off circuit breaker Q1.
– Let the engine run for about 5 minutes.
– Stop the engine by putting the starter switch in position O.
– Lock the side doors and the door of the indicators and
control panel to avoid unauthorized access.
To start up the unit from a remote location using the remote
start/stop switch, proceed as follows:
– Put the starter switch in position
– Switch on circuit breaker Q1.
– Put the remote start/stop switch in position start. The unit
starts a preheating cycle which takes 12 seconds.
– After the preheating period, the unit will start. The starting
attempt will take maximum 12 seconds.
18
ST
F4
. The unit starts a
, pro-
.
– Approximately 15 seconds after starting (stabilisation time
for the generator), the timer relay closes the voltage free
contact and the plant contactor is energised (if installed).
The stabilisation time for the generator is adjustable
between 1.5 and 30 seconds and is factory set at 15
seconds.
To stop the unit when the starter switch is in position
proceed as follows:
– Switch off the load.
– Let the engine run for about 5 minutes.
– Stop the engine by putting the remote start/stop switch in
position stop or by putting the starter switch in position O.
Automatic mains failure (AMF)
The "Automatic mains failure" option offers the following
features:
– continuous monitoring of four input lines,
– an engine cooling water heating,
– an automatic battery charger, "trickle charge",
– a connection block for monitoring,
– an extended control module,
– a remote start possibility.
Continuous monitoring
The "Automatic mains failure" option continuously monitors
four input lines of the main power supply: the three phases
and neutral.
When the mains (one or all phases) is not available for
approximately 0.5 seconds, the following timing applies:
– The mains contactor opens and disconnects the load from
the mains.
– The unit starts 3 seconds (preheat and crank delay) after
the mains failure. If the unit does not start immediately, it
will carry out another 3 starting attempts, each consisting
of 10 seconds cranking and 5 seconds interval (crank
time).
– After 10 seconds generator stabilisation time (plant settle
time), the generator contactor is energised and the
generator supplies power towards the load.
When the mains (all phases) is available again for at least
10 seconds (mains restore time), the following timing applies:
– The generator contactor opens and the mains contactor
closes (1 second change over time).
– The generator shuts down 1 minute later (delay run on
time).
The timing can be adjusted by means of the potentiometers
located at the back of the AMF control module:
S9 .....Crank timer
S10 ...Plant settle timer
S11 ...Mains restore timer
S12 ...Delay run on timer
,