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DISTANCE BASED SPRAY TIMING
The fixed and variable spray length timing modes have an alternative in which distances are used instead of time.
These modes are called
fixed spray distance
and
variable spray distance
. In these modes, delays are expressed in
distance units. These are the units that were chosen when calibrating the frequency input.
The anticipator time in this mode has a special behavior, it is converted to a distance using the maximum speed,
meaning that it is a minimum anticipator time. At speeds below the maximum speed, it will be longer.
6.3 SPRAY TIMING MODES
Determine the spray mode required for the process.
There are four (4) timing modes you may utilize in the 2850+ Spray Control System.
•
Fixed spray time no repeat
•
Fixed spray time with repeat
•
Variable spray time no repeat
•
Variable spray time with repeat
Timing modes are selected by going to the HMI settings page and selecting the
“
Timing
”
button.
The system will spray for a predetermined time depending on the timing mode selected. The spray controller allows for
accurate time
-
based control over the spray nozzle, based on an external trigger signal.
SPRAY PERIOD
•
The spray period is the time the object remains under the spray nozzle or the time that it takes to dispense a dose.
This will be in time units.
START DELAY
•
The time that the system should wait between a trigger event and the start of the spray.
•
Typically, this is the distance between the sensor and the spray nozzle.
•
The start delay must always be longer than the configured minimum signal length of the trigger.
6.4 FIXED SPRAY TIMING
This timing mode is used to create a delayed spray pulse for a fixed predetermined amount of time.
Set parameter value to 0.
Fixed Spray Time
