Software Interface
2-14
Block Read Data: PLC → Module (continued)
2.6.5
For
clamp close profile, constant 4 contains the lock-over pressure value
used in the clamp lock-over feature: 0–32000 in PLC = 0–10 V output (see
constant 3).
For inject and pack and hold profiles, constant 4 contains the maximum
cavity pressure to transition value. For plasticate profile, constant 4
contains the cushion position value.
Y
ou can specify a time delay before you enter a clamp open profile.
Download table location 180 (clamp open constant 4) specifies a time in
milliseconds. If a millisecond time delay equal to the value at download
table 180 has been accomplished, a clamp open profile is started.
2.6.6
For clamp close profile, constant 5 contains the lock-over time value used in
the clamp lock-over feature. 0–32767 in PLC = 327670 ms.
For inject and pack and hold profiles, constant 5 contains the cavity fill
pressure setpoint. The reaching of the cavity fill pressure setpoint starts
time accumulating in real-time process variable location 30. For plasticate
profile, constant 5 contains the cushion correction value.
2.6.7
Constant 6 contains the velocity scaling factor for the target machine. The
velocity scaling factor is the maximum number of counts the input from the
linear sensor can change in 1 ms: 0–32000 in PLC = 0–32000 counts/ms.
For example, speed = 5 in/sec, stroke = 6 in, fully retracted position =
31500 counts, full forward position = 2050 counts
2.6.8
Constant 7 contains the velocity loop gain value. Gain constant for PID
calculation: 0–32767 in PLC = 0–3.2767 %/%. For example, 600 = gain of
0.06 %/%.
2.6.9
Constant 8 contains the velocity loop rate (derivative) value. Rate constant
for PID calculation: 0–32767 in PLC = 0–327.67 ms. For example, 30000 =
300 ms rate factor
.
Constant 4
Constant 5
Constant 6
Constant 7
Constant 8
To Next Page
Loading...
