Maguire Products Weigh Scale Blender WSB, Operation & Maintenance Manual

Page: 52 / 99

M A G U I R E P R O D U C T S , I N C .
Edition: August 6, 2014
52
W E I G H S C A L E B L E N D E R
®
The _RP parameter is important when SMALL DISPENSE requests for color or additive are
made. Large PERCENT errors are more likely to occur when very small dispenses are
requested.
The _RD parameter is important when LARGE DISPENSE requests for color or additive
are made. Large GRAM weight errors are more likely to occur when very large dispense
percentages are being requested.
Depending on the accuracy of the metering device, a certain amount of hunting is to be
expected from one dispense to the next. Allowing the software to stop trying when it gets
sufficiently close to the target results in more perfect average dispenses. The mix chamber
and the barrel of your process machine average out the small errors that occur from cycle
to cycle. If no shortage is ever to be allowed then these parameters can be set to prevent
any shortage from occurring. This will, however, cause an overall error on the plus side.
Remember that EITHER ONE of the two parameters listed here
will cause retries to occur. BOTH parameter conditions must be
met before the process will continue, with one exception: If the
ALARM parameter (_AL) is set to 00000, indicated that you do not
want the process to stop, then these two RETRY parameters will
have no effect. The first dispense will always be accepted and no
retries will be made.
AL
Standard Alarm - Sets alarm functions
_AL Alarm FLAGS. When material runs out, or for some other reason material does not
dispense fully, these flags will instruct the controller what to do.
The last digit is number of retries before the action.
The next to last digit is the action:
00000 = NO ALARM, NO RETRIES
00001 to 09 = ALARM, Continue retries.
00011 to 19 = ALARM, Stop retries, Continue process.
00021 to 29 = ALARM, Stop retries, Stop process.
00031 to 39 = NO ALARM, Stop retries, Continue process.
00000
= no alarm, no pause in process, no retries. This is sometimes useful for a Regrind
dispense.
00001 to 00009
= sound alarm after specified number of retries and continue retries until
successful. The process will not continue until the fault condition is corrected. The last
digit determines the number of retries before sounding the alarm. This is appropriate for all
important and necessary components.
00011 to 00019
= sound alarm after specified number of retries but then stop the retries
and continue with the remainder of the cycle. The alarm will continue until the fault
condition is corrected or until the next cycle begins. The last digit determines the number
of retries before sounding the alarm. This would be appropriate if you wish to make