Ingersoll-Rand EP 60, Варианты руководства оператора/инструкции по эксплуатации, Страница: 28 / 62

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Some Examples of Operation
EXAMPLE 1
The operator selects an unloaded run time of 2 minutes
in the OPTION routine and starts the compressor. The
unit runs loaded for 8 minutes, unloads and then runs
unloaded for two more minutes.
The total running time is 10 minutes which satisfies
timer “A” plus the unit ran two minutes unloaded which
also satisfies timer “B,” therefore, the unit stops
automatically.
This example shows how timer “B” can sometimes be
included within the timer “A” interval. Think of the two
timers as running parallel.
EXAMPLE 2
The operator selects an unloaded run time of 3 minutes
in the OPTION routine and starts the compressor. The
unit runs loaded for 10 minutes and then unloads.
At this point, timer “A” has been satisfied but timer “B”
still wants the compressor to run unloaded 3 more
minutes before allowing an automatic stop.
The total run time for this example will be 13 minutes.
Remember.... If the unit reloads before timer “B” finishes
the 3 minute setting, the partial time is canceled and
timer “B” must restart the 3 minute cycle when the
compressor unloads again.
EXAMPLE 3
The operator selects an unloaded run time of 10
minutes in the OPTION routine and starts the
compressor. The unit runs loaded 12 minutes and then
unloads.
After 12 minutes of running, the 10 minute mandatory
run-time for timer “A” has been met but the compressor
must continue to run unloaded an additional 10 minutes
to satisfy timer “B”.
After 10 minutes of unloaded run time, the compressor
is stopped automatically and the total run time was 22
minutes.
4.8 OPTIONS
Several options are available with the Intellisys®
control. These include starter options, remote start/stop
option, power outage restart, sequencer control, and
modulation control.
4.8.1 Starter Options
The standard compressor is supplied with an automatic
across-the-line (full voltage) starter. This starter is fully
controlled by the Intellisys® and supplies full line
voltage to the compressor motor at startup.
Optional reduced voltage (star-delta) starting is
available, fully installed, at the factory and is also
controlled by the Intellisys®. This starter initially
provides a reduced voltage to the compressor motor to
reduce starting current spike. After the compressor
motor is at full speed, the starter transitions to supply
full line voltage to the compressor motor.
4.8.2 Remote Start/Stop
The remote start/stop option allows the operator to
control the compressor from a remote mounted
start/stop station. This option may be factory installed
or a field installation kit is available. This feature
requires a software option module.
With the optional plug-in module installed, two different
switches can be wired to the controller for remote
start/stop. (Refer to Electrical Schematics 7.1 or 7.2 for
wiring locations). The switches are customer supplied
and must be of momentary type. The stop switch
contacts are normally closed and the start switch
contacts are normally open.
When starting the compressor from the remote
location, the Start button must be held depressed for
approximately 2 seconds to activate the remote start
function and then released within a maximum of 7
seconds or a Remote Start Failure alarm will occur.
4.8.3 Power Outage Restart
For customers that have interruption in their incoming
power supply to the compressor and must maintain an
uninterrupted supply of compressor air, the Power
Outage Restart Option allows an Intellisys®
compressor to automatically restart after incoming
power is restored.