Ransburg DynaFlow User Manual - Manual (Page 55)

LN-9400-00.9 51
DynaFlow TM User Manual - Operation
JOB Queue
The JOB Queue is an input buffer for each of the
8 possible GUNs in the system. JOBs are loaded
into the Queue only if the GUN is already operating
a JOB in the RUN, LOAD, CLEAN, CALIBRATE
modes. Each of the 8 GUNs has a JOB Queue
with a fixed length of 1 (JOB). This permits the
next JOB number for GUN #n to be stored before
the current JOB has been halted. After the current
JOB has been halted the next RUN input signal will
initiate the next JOB number located in the queue.
JOB Number is Loaded into the Queue
Before it is Emptied
1. GUN #3 is running JOB #32 and has NOT
been halted.
2. JOB #47 is in the Queue for GUN #3.
3. JOB #54 is now entered into GUN #3’s
Queue.
4. This will result in JOB #54 replacing JOB
#47 for GUN #3.
JOB #47 became "lost" and was not pro-
cessed by GUN #3.
The Correct Sequencing Should Be:
1. GUN #3 is running JOB #32 and has NOT
finished. (Current JOB #)
2. JOB #47 is in the Queue for GUN #3. (Next
JOB #)
3. GUN #3 is halted.
4. The Run input signal is pulsed. (The Trigger
input does not effect the JOB queue)
5. JOB #47 moves up and the Queue empties.
JOB #47 becomes the current JOB #.
6. JOB #54 is entered into GUN #3’s Queue.
JOB #54 is now the next JOB for GUN #3.
JOB Queue Defaults
If no JOB is entered into the Queue (the Queue
is empty) the current JOB number reverts to the
last JOB number entered if the GUN Run signal
is made active.
1. A Halt signal input will halt the current JOB.
2. Pressing Run will restart the GUN with the
old JOB number.
3. Entering a new JOB number and selecting
Run will restart the GUN with the new JOB
number.
Reverse Flow Detection
For two-component systems, both forward and
reverse fluid flow is detected through the flow
meter if non-fiber optic flowmeters are being uti-
lized. Reverse flow detection can help prevent
mixed two-component material from backing up
into the fluid supply system due to check valve
failure. When the controller detects reverse fluid
flow in excess of the programmed REVERSE
FLOW LIMIT, it will immediately shut OFF the fluid
regulator valves and prohibit mixed material from
contaminating the fluid supply.
Reverse flow rate is displayed on the main screen
of the Local Operator Interface as a flow rate bar
colored red, instead of green for normal flow rate.
Pot-Life Fault
Each of the GUNs configured as two-component
has an associated Pot Life Time located in the JOB
Parameters. These timers are used for materials
that can harden or setup after a specific time. Hard-
ening material in fluid lines or the spray applicator
can cause costly downtime and maintenance to
correct. The output of the POT-LIFE TIMER alarm
can be connected directly to an external PLC for
automatic initiation of the cleaning cycle, or to an
alarm to alert the operator. The Horn
If another JOB number is loaded into
the Queue before it is emptied, the queue
contents will be replaced with the second
entry. See the following examples.
NOTE