App 408 Customer PET controller installation guide & user's manual
Page 12
App 408C
98155.1015
Parameter
Function
Default
Min.
Max.
Starts/hour
This safety feature prevents the compressor
from starting too often in order to protect the
motor against overheating. The controller uses
an advanced start per hour handling program
and when the limit of the number of starts is
reached it will prevent the motor from stopping
when running unloaded.
NOTE
The system does not prevent manual
start/stops but takes them into account when
running automatically.
6
3
10
Water flow
delay
The time that the water flow digital input fault is
overridden after ½ load is engaged.
20s
1s
60s
Star delta
The star-delta time is the transition time when
passing from the star relay to the delta relay.
This can also be used for soft start.
5s
3s
30s
ST-delt dl
The star-delta delay time is the time between the
release of the star relay and the powering of the
delta relay.
50ms
10ms
100ms
Accel time
( Load delay
time)
The acceleration time is the time between the
powering of the delta relay and the powering of
the load solenoid valve. The delay is to ensure
adequate lubrication before the compressor
goes on load.
30s
10s
60s
Minimum
unload time
The minimum unload time determines the
minimum time that the compressor has to run
unloaded before switching again to load.
5s
1s
60s
Unloaded run
time
The unloaded run time is the time that the motor
keeps on running after the stop button has been
pushed. This is to release condensate before
the compressor stops
60s
1s
120s
Blowdown time
The blowdown time is required to depressurise
the compressor internally when the motor stops.
This prevents starting against excessive internal
pressures. This also sets the start delay after a
power failure. Set times at 5sec intervals for
multi m/c installations.
20s
5s
60s
Fan delay
The time that the digital output to the fan motor
is delayed after stopping the compressor.
2 m
1m
5m
Pump delay
The time that the digital output to the cooling
water motor is delayed after stopping the
compressor.
15s
1s
120s
Run hours
Total amount of compressor running hours
0
0
99900
Half load
Total amount of hours the compressor has been
running on ½ load.
0
0
99900
Full load
Total amount of hours the compressor has been
running on full load.
0
0
99900
Stage 3 cycles
The number of times the 3
rd
stage pressure has
gone below its low pressure level.
0
0
99900
Drain open time
Opening time of the drain valves to release
moisture from the separators.
20s
***
5s
30s
Drain closed
time
The time the drain valves are kept closed before
opening to release the moisture. See manual for
recommended times with various ambient
conditions.
15m
***
3m
45m
Defaults
Reinstalls all the default settings and values to
the original as supplied settings.
Table 9
***
THESE SETTINGS WILL VARY WITH COMPRESSOR TYPE AND OPERATING DUTY.
GUIDELINES ARE GIVEN IN SECTION 2.2.7.1 TABLE 9A.
Summary of Contents for 5280D.1.IAC
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Page 50: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 44 1440 doc CYLINDER 1st STAGE...
Page 52: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 46 1440 doc SUCTION VALVE COVER...
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