Product Manual | Lynx™ Shielded Analog Input Module IA1‑M‑V
RJG, Inc.
11
TROUBLESHOOTING
COMMON INSTALLATION ERRORS
NEGATIVE SCALING FOR STROKE
Problem:
Negative value was entered in stroke
scaling.
Solution:
The analog input module cannot see
negative voltages. The wiring must have the
positive (+) terminal on the analog input above
the negative (‑) terminal.
The
eDART
determines the stroke direction
using the Screw Run signal. It will invert the
signal automatically if necessary to get a positive
volume and stroke curves, and to analyze flow
of material.
If there is no machine sequence module input
for Screw Run positive numbers for full scale
must still be used; set the screw direction
correctly in “Sequence Settings”. The stroke
signal should ascend positively while the
material is being injected into the mold; the
zero of the screw (screw bottom) must also be
set.
FALSE CYCLE START ON PRESS POWER‑UP
Problem:
Job on
eDART
is started before
machine is powered on.
Solution:
Always power the
eDART
on after the
machine is powered on.
Analog signals tend have a spike or a sudden
“lurch” from zero to a specific position voltage.
Often the
eDART
will interpret the forward jump
of the stroke signal as the cycle start. Sumitomo
machines are particularly prone to this false
trigger problem because a calibration cycle is
performed at each power‑up.
INCORRECT INJECTION PRESSURE
SCALING
Problem:
Injection pressure scaling is incorrect.
Solution:
The
eDART
system and Lynx sensors
eliminate the need for the manual scaling steps
if injection pressure (for electric machines)
comes from either a nozzle pressure sensor or
an electrical signal from the machine. However,
if signals from another source are used, then
scaling must be manual input in the
eDART
.
The electrical signal for pressure is usually
0–10 V ,with a “low” voltage (not always
zero) being no pressure and a “high” voltage
(not always 10 V) being the highest pressure.
Compare the machines reported hold pressure
to the
eDART‑
reported
pressure to determine
whether a scaling adjustment is necessary.
Содержание Lynx IA1-M-V
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