Rockwell Automation 1771-QDC PLASTIC MOLD.MODULE - Manual (Page 136)

2–70 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.
Word Description
MCC14 Ram (Screw) Position Maximum Software Travel Limit [11] The module continuously compares real-time ram (screw) position
against this entry. The module sets alarm status bit SYS07-B01 and forces all of its outputs to zero when executing a ram (screw)
reverse profile or movement (Pre-decompression, Plastication, Post-decompression) and ram (screw) position equals or exceeds
this entry. A zero entry inhibits SYS07-B01.
MCC15 Ram (Screw) Software Travel Limit Alarm Deadband [17] After sensing a ram (screw) overtravel and latching alarm status bit
SYS07-B00 or SYS07-B01, the module will not unlatch bit until real-time ram (screw) position is inside the overtravel setpoint by an
incremental length equal to this entry. This incremental position is added to MCC13 in order to determine ram (screw) position re-
quired to unlatch SYS07-B00. This incremental position is subtracted from MCC14 in order to determine ram (screw) position re-
quired to unlatch SYS07-B01.
MCC16 Ram (Screw) Position Transducer Digital Filter [23] A non-zero entry forces the module to filter the input before using the result for
all ram (screw) position calculations. Use this parameter when required to soften the input signal from a linear potentiometer.
Ram (Screw) Pressure Transducer Configuration
The module accesses data in MCC17-MCC22 if bit patterns in
MCC02 and MCC03 indicate that the module is connected to a ram
(screw) pressure sensor.
Word Description
MCC17 Minimum Ram (Screw) Pressure [01]
MCC18 Maximum Ram (Screw) Pressure [01]
MCC19 Analog Signal at Minimum Ram (Screw) Pressure [24]
MCC20 Analog Signal at Maximum Ram (Screw) Pressure [24]
MCC21 High Ram (Screw) Pressure Alarm Setpoint [01] The module continuously compares real-time ram (screw) pressure against this
entry. The module sets alarm status bit SYS05-B00 when ram (screw) pressure equals or exceeds this entry. A zero entry inhibits
SYS05-B00.
MCC22 Ram (Screw) Pressure Alarm Time Delay [23] Total time the module must monitor a continuous ram (screw) pressure in excess of
h i ll ( ) l i b f i h i d l bi S i /bi i f
( ) y [ ] ( )
the non-zero entry in all ram (screw) pressure alarm setpoints before setting the associated alarm status bit. Setpoint/bit pairs af-
fected are:
fected are:
Setpoint Alarm Stat s Bit Setpoint Alarm Status Bit
MCC21 SYS05-B00 MCC21 SYS05-B00
JGC06 SYS05-B09
INC57 SYS06 B00 INC57 SYS06-B00
PKC57 SYS06-B02 PKC57 SYS06-B02
HDC57 SYS06-B04 HDC57 SYS06-B04
PRC57 SYS06-B06
PLC57 SYS06 B07 PLC57 SYS06-B07
PSC57 SYS06-B08 PSC57 SYS06-B08
Use a non-zero entry to filter out ram (screw) pressure spikes of short enough duration that they should not be considered an alarm Use a non-zero entry to filter out ram (screw) pressure spikes of short enough duration that they should not be considered an alarm.
Clamp Position Transducer Configuration
The module accesses data in MCC23-MCC30 if bit patterns in
MCC02 and MCC03 indicate that the module is connected to a
clamp position sensor.
Word Description
MCC23 Minimum Clamp Position [13]
MCC24 Maximum Clamp Position [13]
MCC25 Analog Signal at Minimum Clamp Position [24]
MCC26 Analog Signal at Maximum Clamp Position [24]