ACC7200 Air Compressor Controller User Manual Page 15 of 77
failed to start signal and stops, and meanwhile LCD alarm page displays “Failed to Start” alarm;
e)
During the start attempts, if crank disconnect is fulfilled, then it enters “Safety On Delay”, during
which oil pressure low, water temperature high and charging failure alarms are all inactive; after
safety on delay it enters “Start Idle Time” (if configured);
f)
After start idle time, idle running is initiated; if Onload key is pressed, it enters “Warming up delay”
(if configured); when speed is up to load, load control outputs;
g)
When warming up time is ended, if speed is not up to load speed, controller displays “Wait for
Load”; if speed is up to the load speed, onload control outputs, and controller displays “Normal
Running”; compressor enters normal running status (it shall adjust speed automatically based on
discharge pressure); if shutdown alarm occurs, controller shall issue an alarm and stop (LCD alarm
page displays alarm information).
4.42 STOP SEQUENCE
a)
Press
, and stop the running air compressor; before stop if load control outputs, then load
control shall be disconnected;
b)
If “Cooling Time” is configured, then “Cooling Time” starts; when cooling delay is over, it enters
“Stop Idle Time”;
c)
When it enters stop idle time (if configured), then idle relay is energized to output;
d)
It enters “ETS Solenoid Hold”, and ETS relay is energized to output; fuel relay output is
disconnected;
e)
It enters “Wait Stop Time”, and automatically judges whether it stops completely;
f)
When air compressor stops completely, it enters “After Stop Time”; Otherwise controller enters
stop failure and issues “Failed to Stop” warning (after the alarm, if air compressor stops completely,
then it enters “After Stop Time”, and meanwhile Failed to Stop alarm is removed automatically);
g)
When “After Stop Time” over, it enters standby status.
4.5
START OPERATION FOR FUEL PRE-SUPPLY OUTPUT SETTING
When output port is configured to “Fuel Pre-supply Output”, and press
to start the air
compressor:
If the set pre-supply time is less than or equal to pre-heat time, LCD displays “Pre-heat Delay xx”,
pre-heat relay outputs (if configured) and pre-supply relay outputs (output for the set pre-supply time);
after pre-heat delay is over, fuel relay outputs the set fuel time (default: 1s) before start, then start relay
outputs; the following start process is the same as the START OPERATION.
If the set pre-supply time is more than the pre-heat time, pre-supply relay outputs in pre-heat delay
phase; after pre-heat delay is over, the following pre-supply time enters pre-supply phase, and LCD
displays “Fuel Pre-supply Time xx” and pre-supply relay outputs; after pre-supply delay is over, fuel relay
outputs the pre-set fuel time (default: 1s) before start; then start relay outputs; the following start
process is the same as the START OPERATION.
If output port is configured to “Fuel Pre-supply Output”, air compressor stays at standby status and
it outputs cyclically according to the pre-set “Fuel Pre-supply Rest Time” and “Fuel Pre-supply Time”; If
the pre-set “Fuel Pre-supply Rest Time” is 0h, then pre-supply doesn't output.
