Rockwell Automation 1771-QDC PLASTIC MOLD.MODULE - Manual (Page 101)

2–35 Command Word/Bit Descriptions
Publication 1771-6.5.88 – July 1997
EPC
Critical Process Setpoints
Word Description
EPC57 Ejector Forward Dwell Timer Preset [21]
The module starts an internal Ejector Forward Dwell Timer dependent upon the state of EPC03-B15.
if: then the module:
EPC03-B15 is RESET starts the timer when the ejector has achieved its final advanced position
(EPC59 when EPC03-B13 = 0, EPC29 when EPC03-B13 = 1) and the
timer accumulated value must equal or exceed this entry before the mod-
ule may start the final full retract portion of the Ejector Profile
EPC03-B15 is SET starts the timer when the ejector has achieved its initial fully advanced
position (EPC59) and the timer accumulated value must equal or exceed
this entry before the module may start the remaining portion of the Ejector
Profile
EPC57 is zero causes EPC03-B15 to have no effect on Ejector Profile execution
timer is timing sets master status bit SYS03-B10
it receives any action command (except DYC02-B10,
-B11, -B12, or -B13) when the timer is timing stops this timer and resets SYS03-B10
EPC58 Open
EPC59 Ejector Fully Advanced Position Setpoint [16]
When this ejector position is reached during any advance portion of the Ejector Profile, the module immediately halts the advance
portion and checks the following for further control action: EPC64, state of EPC03-B12, state of EPC03-B13, state of EPC03-B15.
if total advance (full + tip strokes) at Ejector Profile
completion is: then the module:
equal to entry in EPC64 and EPC03-B15 is SET checks EPC03-B12 to determine whether to start final full retract or wait for
an F-to-T transition of DYC03-B15 to continue
equal to entry in EPC64 and EPC03-B15 is RESET sets its valve outputs to End of Advance stroke values (EAC33-EAC40) for
the duration of the dwell preset (EPC57) and
checks EPC03-B12 to determine whether to start final full retract or wait for
an F-to-T transition of DYC03-B15 to continue
greater than one and less than entry in EPC64, and
EPC03-B13 is SET checks EPC03-B12 to determine whether to start tip retract or wait for an
F-to-T transition of DYC03-B15 to continue
greater than one and less than entry in EPC64, and
EPC03-B13 is RESET checks EPC03-B12 to determine whether to start full retract or wait for an
F-to-T transition of DYC03-B15 to continue
if full advance portion of Ejector Profile just
completed was the
initial full advance stroke, and :
then the module, in the order given:
EPC03-15 is RESET and EPC03-B13 is RESET checks EPC03-B12 to determine whether to start full retract or wait for an
F-to-T transition of DYC03-B15 to continue
EPC03-15 is RESET and EPC03-B13 is SET checks EPC03-B12 to determine whether to start tip retract or wait for an
F-to-T transition of DYC03-B15 to continue
EPC03-15 is SET and EPC03-B13 is RESET sets its valve outputs to End of Advance stroke values (EAC33-EAC40) for
the duration of the dwell preset (EPC57) and
checks EPC03-B12 to determine whether to start full retract or wait for an
F-to-T transition of DYC03-B15 to continue
EPC03-15 is SET and EPC03-B13 is SET sets its valve outputs to End of Advance stroke values (EAC33-EAC40) for
the duration of the dwell preset (EPC57) and
checks EPC03-B12 to determine whether to start tip retract or wait for an
F-to-T transition of DYC03-B15 to continue
ejector position equals or exceeds this entry sets master bit status bit SYS03-B12