Gun Flow Out of Range
Explanation: (Manual Guns Only) This fault indicates that the
total flow rate through a GUN has exceeded the MAXIMUM
FLOW RATE JOB parameter value or dropped below the
MINIMUM FLOW RATE JOB parameter.
Out of Tolerance Faults
Explanation: "OUT OF TOLERANCE" faults are generated
in the following manner. Every time a specific volume of fluid
passes through the GUN (specified by the TOLERANCE
VOLUME parameter), the controller determines the amount
of resin and catalyst material that flowed. The controller then
calculates the actual ratio and determines if it is within the
limits as set by the FLOW TOLERANCE setting.
Reference the "Error Codes" table (Figure 16). Typical
causes for OUT OF TOLERANCE faults are:
1. Kp, Ki, or Kd gains not set correctly.
2. Sticking or faulty fluid regulator.
3. Sticking or faulty flow meter.
4. Running the wrong JOB #, which may include the
wrong gain values.
5. Fluid supply pressures not adjusted properly.
6. The MVR LOW JOB parameter set too high (above
the regulator cracking pressure).
7. Air bubbles or cavitation in the fluid.
8. Unstable fluid supply pressures to the fluid
regulators. This can be seen with pump supply
systems.
Corrective Action:
The cause is the material supply pressure in almost every
case when this fault is observed. Obviously, if FLOW TOO
LOW or FLOW TOO HIGH faults are not occurring, the flow
rates are operating within the range of the fluid regulators.
Over an extended period of time, however, the volumes
used are not within the appropriate tolerance band. Observe
the ratio for both the resin and catalyst channels that are
producing faults while they are operating or immediately after
the controller faults (before resetting it). If the actual ratio
of the catalyst is below target, adjust the supply pressure
to the catalyst regulator up approximately 5 psi, or adjust
the resin supply down by approximately 5 psi and try to
run again. Keep adjusting these pressures until the actual
ratio locks in on the target. Keep in mind that higher is not
always better. Many times it is better to lower the pressure
of the opposite channel, rather than raise a channel that is
operating low in ratio.
The Kp and Ki gain settings located in the JOB tables may
also be used to eliminate OUT OF TOLERANCE faults. For
example, if an OUT OF TOLERANCE - CATALYST TOO
HIGH fault occurs, adjust the gain settings for the catalyst
channel down and vice-versa for a OUT OF TOLERANCE
- CATALYST TOO LOW fault. The resin channel also needs
to be taken into account for GUNs configured as automatic.
Gun Not Ready
Explanation: This is not a fault condition and does not
prevent the GUN from operating. This error occurs if a
GUN has not been configured, is not enabled, or no JOB
#s have yet been saved and the GUN is placed in the RUN
mode. This can be caused by trying to place a GUN in RUN
mode either from local display/interface or from an external
control device such as a PLC or host PC.
0 - 10 VDC
0
1
2
3
4
5
6
7
8
9
10
4
5.6
7.2
8.8
10.4
12.0
13.6
15.2
16.8
18.4
20.0
4-20 mA
Pressure (PSIG)
0
10
20
30
40
50
60
70
80
90
100
ANALOG SEALING
LN-9400-00-R11 (08/2018)
65 / 96
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MAINTENANCE
Содержание Ransburg DynaFlow 77376
Страница 13: ...Figure 1 Block Diagram Return To Contents LN 9400 00 R11 08 2018 13 96 www carlisleft com INTRODUCTION...
Страница 90: ...Fluid Panel Sheet 1 Return To Contents LN 9400 00 R11 08 2018 90 96 www carlisleft com APPENDIX...
Страница 91: ...Fluid Panel Sheet 2 Return To Contents LN 9400 00 R11 08 2018 91 96 www carlisleft com APPENDIX...
Страница 92: ...Fluid Panel Sheet 3 Return To Contents LN 9400 00 R11 08 2018 92 96 www carlisleft com APPENDIX...