Load Initial Profile Values
Chapter 8
8-15
Profile Offsets
(for Pack profile: HPC24 and 25)
(for Hold profile: HPC41 and 42)
Profile offsets let you shift the amplitude of the entire pack or hold profile
up or down, if necessary. You enter these setpoints in PSI or Bar.
-HPC24 and 41 determine the offset for cavity pressure profiles.
-HPC25 and 42 determine the offset for ram pressure profiles.
We recorded zeros for no pressure offsets on Worksheet 8-B.
Cure Timer Preset
(HPC61)
Use this word to set the length of cure time that starts at completion of the
hold profile. You enter this preset in seconds (000.0 to 999.9). After the
QDC module starts the internal cure timer, it:
reports the accumulated value of the timer in SYS58
sets bit SYS03-B03 when the timer is timing
sets the done bit SYS03-B05 when SYS58 equals or exceeds HPC61
stops this timer when:
SYS58 = 999.9 seconds, or when
it sees a false-to-true transition of DYC03-B01
resets SYS58 to zero on a false-to-true transition of DYC03-B01
We recorded zero for this preset on Worksheet 8-B.
The valve spanning procedures in chapter 9 require these initial values.
We help you select correct final values required by your application in
chapter 10. For additional information, refer to the Plastic Molding
Module Reference Manual (publication 1771-6.5.88).
After you determine initial values and record them on Worksheet 8-B, you
are ready to proceed.
1.
Enter all worksheet values into your PLC-5 data table.
Important: Be sure that you have not altered any setpoints, and that you
have entered each and every setpoint exactly as on the worksheet.
2.
Use the procedure described in chapter 4 to download command
blocks to the QDC module. We repeat the HPC block download data:
Block
Block ID
Command Bit
Companion
HPC
12
B21/11
none
3.
Check SYS61 and SYS62 for programming errors. Correct as needed.
Enter and Download your
Worksheet Values