Rockwell Automation 1771-QDC PLASTIC MOLD.MODULE - Manual (Page 150)

2–84 Command Word/Bit Descriptions
Publication 1771-6.5.88 – July 1997
Notes: 1. For [ ] engineering units, see page 3.
2. When using the Inject/Clamp/Eject mode, all pressure readings are system pressure at input 2, except where noted.
Ram (Screw) Pressure Control Limits
Word Description
PKC41 Ram (Screw) Pressure Minimum Control Limit [01] Minimum controllable ram (screw) pressure attainable during any Ram Press/
Time Pack Profile. The module expects this ram (screw) pressure when setting its selected ram (screw ) pressure valve to the
%-output in PKC43.
PKC42 Ram (Screw) Pressure Maximum Control Limit [01] Maximum controllable ram (screw) pressure attainable during any Ram Press/
Time Pack Profile. The module expects this ram (screw) pressure when setting its selected ram (screw) pressure valve to the %-out-
put in PKC44.
PKC43 Selected Ram (Screw) Pressure Valve Output for Minimum [19] 0% CV output percentage that the module uses to drive the se-
lected pressure valve during any Ram Press/Time Pack Profile. The module expects a pressure equal to PKC41 when setting the
selected ram (screw) pressure valve to this %-output during profile execution. Ram Press/Time Pack Profile will be executed as a
reverse-acting algorithm if this entry is greater than PKC44.
PKC44 Selected Ram (Screw) Pressure Valve Output for Maximum [19] 100% CV output percentage that the module uses to drive the
selected pressure valve during any Ram Press/Time Pack Profile. The module expects a pressure equal to PKC42 when setting the
selected ram (screw) pressure valve to this %-output during profile execution. Ram Press/Time Pack Profile will be executed as a
reverse-acting algorithm if this entry is less than PKC43.
Cavity Pressure Control Limits
Word Description
PKC45 Cavity Pressure Minimum Control Limit [04] Minimum controllable cavity pressure attainable during any Cav Press/Time Pack Pro-
file . The module expects this cavity pressure when setting its selected cavity pressure valve to the %-output in PKC47.
PKC46 Cavity Pressure Maximum Control Limit [04] Maximum controllable cavity pressure attainable during any Cav Press/Time Pack
Profile . The module expects this cavity pressure when setting its selected cavity pressure valve to the %-output in PKC48.
PKC47 Selected Cavity Pressure Valve Output for Minimum [19] 0% CV output percentage that the module uses to drive the selected pres-
sure valve during any Cav Press/Time Pack Profile. The module expects a pressure equal to PKC45 when setting the selected
cavity pressure valve to this %-output during profile execution. The Cav Press/Time Pack Profile will be executed as a reverse-act-
ing algorithm if this entry is greater than PKC48.
PKC48 Selected Cavity Pressure Valve Output for Maximum [19] 100% CV output percentage that the module uses to drive the selected
pressure valve during any Cav Press/Time Pack Profile. The module expects a pressure equal to PKC46 when setting the selected
cavity pressure valve to this %-output during profile execution. The Cav Press/Time Pack Profile will be executed as a reverse-act-
ing algorithm if this entry is less than PKC47.
Profile Tuning Constants
Word Description
PKC49 Proportional Gain for Ram Press Control [30]
PKC50 Integral Gain for Ram Press Control [27] or [28]
PKC51 Derivative Gain for Ram Press Control [26] or [21]
PKC52 Proportional Gain for Cav Press Control [30]
PKC53 Integral Gain for Cav Press Control [27] or [28]
PKC54 Derivative Gain for Cav Press Control [26] or [21]
PKC55 - 56 Open
Profile Pressure Alarm Setpoint
Word Description
PKC57 Profile High Ram (Screw) Pressure Alarm Setpoint [01] The module compares real-time ram (screw) pressure against this entry
when executing the Pack Profile. The module sets alarm status bit SYS06-B02 when ram (screw) pressure equals or exceeds this
entry during the Pack Profile. A zero entry inhibits SYS06-B02.
PKC58 Profile High Cavity Pressure Alarm Setpoint [04] The module compares real-time cavity pressure against this entry when executing
Pack Profile. The module sets alarm status bit SYS06-B03 when cavity pressure equals or exceeds this entry during the Pack Pro-
file. A zero entry inhibits SYS06-B03.
PKC59 - 64 Open