Rockwell Automation 1771-QDC PLASTIC MOLD.MODULE - Manual (Page 166)

2–100 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.
Pressure Control Limits
Word Description
SCC41 Pressure Minimum Control Limit [02] Minimum controllable clamp pressure attainable during any Press/Pos Second Clamp Close
Profile. The module expects this clamp pressure when setting its selected pressure valve to the %-output in SCC43.
SCC42 Pressure Maximum Control Limit [02] Maximum controllable clamp pressure attainable during any Press/Pos Second Clamp Close
Profile. The module expects this clamp pressure when setting its selected pressure valve to the %-output in SCC44.
SCC43 Selected Pressure Valve Output for Minimum [19] 0% CV output percentage that the module uses to drive the selected pressure
valve during anyPress/Pos Second Clamp Close Profile. The module expects a pressure equal to SCC41 when setting the selected
pressure valve to this %-output during profile execution. The Press/Pos Second Clamp Close Profile will be executed as a reverse-
acting algorithm if this entry is greater than SCC44.
SCC44 Selected Pressure Valve Output for Maximum [19] 100% CV output percentage that the module uses to drive the selected pressure
valve during any Press/Pos Second Clamp Close Profile. The module expects a pressure equal to SCC42 when setting the selected
pressure valve to this %-output during profile execution. The Press/Pos Second Clamp Close Profile will be executed as a reverse-
acting algorithm if this entry is less than SCC43.
Velocity Control Limits
Word Description
SCC45 Velocity Minimum Control Limit [08] Minimum controllable clamp velocity attainable during any Vel/Pos Second Clamp Close Profile.
The module expects this clamp velocity when setting its selected velocity valve to the %-output in SCC47.
SCC46 Velocity Maximum Control Limit [08] Maximum controllable clamp velocity attainable during any Vel/Pos Second Clamp Close
Profile. The module expects this clamp velocity when setting its selected velocity valve to the %-output in SCC48.
SCC47 Selected Velocity Valve Output for Minimum [19] 0% CV output percentage that the module uses to drive the selected velocity valve
during anyVel/Pos Second Clamp Close Profile. The module expects a velocity equal to SCC45 when setting the selected velocity
valve to this %-output during profile execution. The Vel/Pos Second Clamp Close Profile will be executed as a reverse-acting algo-
rithm if this entry is greater than SCC48.
SCC48 Selected Velocity Valve Output for Maximum [19] 100% CV output percentage that the module uses to drive the selected velocity
valve during any Vel/Pos Second Clamp Close Profile. The module expects a velocity equal to SCC46 when setting the selected
velocity valve to this %-output during profile execution. The Vel/Pos Second Clamp Close Profile will be executed as a reverse-act-
ing algorithm if this entry is less than SCC47.
Profile Tuning Constants
Word Description
SCC49 Proportional Gain for Pressure Control [30]
SCC50 Integral Gain for Pressure Control [27] or [28]
SCC51 Derivative Gain for Pressure Control [26] or [21]
SCC52 Proportional Gain for Velocity Control [28]
SCC53 Feed Forward Gain for Velocity Control [30]
SCC54 - 56 Open
Profile Pressure Alarm Setpoint
Word Description
SCC57 Profile High Pressure Alarm Setpoint [02] The module compares real-time clamp pressure against this entry when executing the
Second Clamp Close Profile. The module sets alarm status bit SYS05-B13 when clamp pressure equals or exceeds this entry
during the Second Clamp Close Profile. A zero entry inhibits SYS05-B13.
SCC58 - 64 Open