Total Hold
Transparent/
PID
Analog Hold
Load
External Fault/
Enable
Spare Digital
Input
Analog Set
Point
Spare Analog
Input
This signal will stop all totals for the CHANNEL as long as the signal is supplied, even if the GUN
is running and there is fluid flow. The non-resettable total will not be effected. This is most often
used during flush or soft air push cycles. It can also be used to account for only that material
which is delivered onto parts.
For GUNs configured as single-component, automatic mode only. This input is only acknowledged
for run and load modes. This input must be supplied before the clean input or the trigger input
if in run mode. This signal will place the CHANNEL in single-component, open loop mode and
redirect the Analog Set Point Input directly to the E/P transducer control output. MAXIMUM FLOW
RATE, MINIMUM FLOW RATE, MVR HIGH and MVR LOW parameters have no effect while in
the transparent mode. The Out of Tolerance, FLOW TOO LOW and FLOW TOO HIGH faults will
also be disabled while in the Transparent condition.
This signal applies only to GUNs configured for single-component automatic mode. This signal
will suspend PID control and freeze the analog control output to the E/P transducer to the current
value. Normal PID operation will resume when this signal is removed. This would typically be used
during flushing operations or for control stability in situations where there are extremely quick
trigger cycles or equipment limitations. The Out of Tolerance, Flow Too Low and Flow Too High
faults will also be disabled while in the Analog Hold condition.
Load requires a pulsed signal of at least 0.25 seconds duration. The LOAD input places a manual,
two-component GUN into LOAD MODE. LOAD MODE is a special way to meter both resin and
catalyst to the applicator after the system has been through a CLEAN operation while assuring
accurate ratios. A GUN can be placed into the LOAD MODE directly from the RUN MODE. For
details, refer to LOAD MODE in the "Operation" section of this manual.
External Fault will detect a low signal of at least 0.25 seconds duration. This signal must be main-
tained high for normal operation.
No fluid flow will occur regardless of the operating mode
if the Enable input is not active.
This input is supplied as an interlock for other equipment to
automatically shut down the fluid flow controller. The system must be reset after the External Fault
is returned to the high state. Reference "Recovering From Faults" in the "Operation" section of
this manual. A Global Gun Enable system input will override this input.
Not used presently.
This is a 0-10 VDC or 4-20 ma input signal (hardware selectable on the Channel Card) which can
be used to command flow rate when the applicator is in AUTOMATIC mode. The scaling for input
signal vs. flow rate is determined by the GUN JOB # parameters, MAXIMUM FLOW RATE and
MINIMUM FLOW RATE. An Analog Set Point signal less than 0.25 VDC will cause the controller
to use the SET POINT parameter located in the JOB table instead.
Not used presently.
Description
GUN INPUTS (Cont.)
Input Signals
LN-9400-00-R11 (08/2018)
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INSTALLATION