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GENERAL TROUBLESHOOTING for Piezoelectric Sensors
Step 1: Connect a standard SI-1-LV module, using cables provided, to the 9-pin connector on your computer and to a power supply. Attach to the piezo adapter with the sensor cable and sensor connector.
Step 2: Install then launch the Lynx Viewer software from your RJG folder. Lynx Viewer CD provided.
Step 3: Select the correct Comm Port from the combo box.
Step 4: Click on the GO button.
Piezo Adapter Verification
Potential Problem and Solution
Sensor State reads “Good”
No problem identified yet. Continue on to next step.
Sensor State reads “No Comm”
MMPA is not working or SI-1-LV is not working. Check cables and
power supply hook up. Test a known good Lynx™ sensor with Lynx™
Viewer to determine whether the problem is the Piezo Adapter.
Sensor State reads “Invalid Reading”
Sensor Connector may be contaminated. Clean connector and repeat
the test*. (See note below.) Contact RJG Customer Support if problem
persists.
Readout remains unchanged but is not near
zero
Lynx Piezo Adapter
PZ/LX1 - S
Selection & Installation Guide
GENERAL DESCRIPTION
The Lynx Piezo Adapter (LPA) provides cavity pressure sensor users with a convenient, simple
interface to RJG’s eDART System™. The device accepts inputs from any piezo sensor.
Technical Specifications
Range
0 - 20000 pC
Accuracy
±1%
Max. Temp. (Operating)
140° F
Warm-up Time
5 minutes
LPA electronics are not working. Contact RJG Customer Support.
Step 5: Observe sensor for 1-2 minutes while watching the indicator bar and the % Full Scale
window to see if the readout changes over time.
Sensor Verification
Potential Problem and Solution
Readout remains unchanged near zero
No problem identified.
Readout will not remain steady – drifts
positive or negative, and may eventually
read “Invalid Reading”
Sensor Connector may be contaminated. Clean connectors and repeat
test. See note below.*
Table 1: Technical Specifications
HARDWARE INSTALLATION
Make sure that the Ground Potential of the
structure is the same as the Ground used by the
eDART™.
Step 6: Manually load sensor while watching the indicator bar and the % Full Scale window to see if
the readout rises and falls during loading and unloading
Operational Verification
Make sure that the Lynx Piezo Adapter and
any connecting cables are out of the way of
any sources of static such as feeder tubes and
material hoppers.
Potential Problem and Solution
Readout rises and falls as sensor is loaded
and unloaded. When unloaded, readout
returns to zero.
Sensor is working normally.
Readout remains unchanged near zero
The sensor or sensor case may be damaged or failed. Try replacing
sensor cable. If problem persists contact RJG Customer Support.
Readout changes but is intermittent or does
not return to zero
The sensor may be damaged or failed. Try replacing sensor cable. If
problem persists contact RJG Customer Support.
Table 3: Troubleshooting
When not in use, keep protective cap in place to
avoid contamination.
A = Piezo Input Connector
B = Mounting Screws
C = Lynx Connector - Output to eDART™
Figure 1: Piezo Adapter
Dimensions
*Troubleshooting drifting or invalid readouts
NOTES: The Lynx Piezo Adapter must be
mounted on a frame grounded structure (such as
a mold in the press or platen) or control panel to
ensure proper operation.
Connectors can be cleaned with acetone or electronics grade cleaners (contact RJG for a list of
approved cleaners). After cleaning, the component(s) should be baked at 100° C (212° F) for 1 hour.
After cleaning, repeat tests above.
For further Information please contact RJG Customer Support at 231-947-3111 ext. 170 or
visit our website at: http://rjginc.com/resource_product.html to obtain detailed manuals
RJG, Inc.
Lynx™ Piezo Adapter
Figure 2: Piezo Adapter Flush Mount
RJG, Inc.
Lynx™ Piezo Adapter
IMPORTANT NOTE
SOFTWARE SETUP
In order to properly zero a piezoelectric sensor, the Lynx Piezo Adapter requires a signal
from either an ID7-D-SEQ Lynx 7-channel Sequence Input Module or an L-LS Lynx MoldClosed Limit Switch. The ID7-D-SEQ or L-LS requires one of the signals listed in Table 2.
Figure 3 below shows an example of the Mold Clamped signal being supplied to an ID7-D-SEQ.
When a Lynx Piezo Adapter is first connected to an eDART™, initial setup in the eDART™ software is
required. When the device is connected, the Sensor Locations tool automatically appears.
NOTE: In order to properly zero, you should not see any cavity pressure within
1/10 of a second after the ‘on -> off’ or ‘off -> on’ change.
Sequence
Module Input
Limit Switch
Signal
Change
Mold Opening
On -> Off
Mold Closing
On -> Off
Mold Fully Open
On -> Off
Mold Clamped
Off -> On
Injection Forward
Off -> On
Mold Fully Open
On -> Off
Mold Clamped
Off -> On
From the pull-down menu, select the sensor model that is attached to the Piezo Adapter. The Sensor Type
and Full Scale will automatically be displayed.
Figure 4: 9211 Selected
Table 2: Available Signals
Figure 5: Sensor Scaling Setup
When the Mold Clamped trace is
high, the signal is on.
Off
On
1/10
second
Figure 3: Off/On change of the “Mold
Clamped” signal
RJG, Inc.
When the Mold Clamped trace is low, the
signal is off.
Lynx™ Piezo Adapter
A default sensitivity will appear. Check the traveler that came with your sensor adapter purchase for a
more accurate sensitivity. Enter that number on the Sensor Scaling Setup screen. Click the Accept button.
Once the sensor type has been setup, select the correct sensor location from the pull-down menu. Enter
a cavity number or name in the Identifier field if you have two or more sensors set to the same location (in
multi-cavity applications). When finished, click the Accept button.
NOTE: Non-standard devices are configured by choosing the “Other” sensor type and entering the
sensor sensitivity and full scale as necessary.
NOTE: If no sensors are connected to the Piezo Adapter, simply choose the “Not Used” sensor location
in the Sensor Locations tool.
RJG, Inc.
Lynx™ Piezo Adapter