DuraBlue II Customer Product Manual.pdf - 第73页
Operation 4-1 1 Part 1126931_01 2018 Nordson Corporation Monitor Melter Faults The melter alerts the operator to the faults listed in Table 4‐1. When a fault occurs, you must diagnose and correct the fault condition an…
Operation
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Part 1126931_01
2018 Nordson Corporation
To manually check a component's temperature (contd)
When you scroll the left display past the
number of the last sequential component in a
component group, the number of the first
sequential component in the next component
group appears in the left display.
The melter will return to the automatic scan
mode two minutes after the last key is pressed.
When you press the Tank key, it is the pump
temperature that is actually indicated in the
right display. To check the actual temperature
of the tank, simultaneously press the Tank key
and the left‐display scroll key.
The default unit for temperature display is
degrees Celsius (C). This may be changed to
degrees Fahrenheit using operating Parameter
20.
Appendix B, Parameter 20
The LEDs on each component key will change
from green to yellow if any component in the
component group drops more than 3 C (5 F)
below its assigned set‐point temperature.
You can check the set‐point temperature of a
component at any time, by pressing the
right‐display UP scroll key. Holding down the
scroll key while the melter is in the automatic
scan mode reveals the set‐point of each
component that is scanned.
Operation
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Part 1126931_01
2018 Nordson Corporation
Monitor Melter Faults
The melter alerts the operator to the faults listed in Table 4‐1.
When a fault occurs, you must diagnose and correct the fault condition and
then place the melter back into operation. You can use the fault log to
determine the type, order, and relative time of the last ten faults.
Table 4‐1 Melter Faults
Display
Code/Sub‐code
Name Affect on Melter Cause Corrective Action
F1/None RTD Heaters turn off
The RTD for the
component indicated
has failed or the
component was
disconnected from
the melter.
Replace RTD
Check hose/applicator
connections
F2/None
Under
temperature
Heaters turn off
The actual temperature
of the component
indicated has dropped
below the under
temperature delta,
which was set using
parameter22.
Check for conditions
that may cause a drop
in ambient temperature
Replace RTD
F3/None Over temperature Heaters turn off
The actual temperature
of the component
indicated has increased
beyond the over
temperature delta,
which was set using
parameter21.
Replace RTD
F4/1 RAM test
Melter stops
functioning
Internal RAM failure Replace CPU
F4/2
Internal Clock
time
Heaters remain on,
but fault condition
persists
Internal clock failure Replace CPU
F4/3
RAM backup
battery
Clock does not
function
Insufficient voltage from
RAM backup battery
Replace CPU
F4/4
Internal clock
battery backed
RAM
Heaters remain on,
but fault condition
persists
Battery‐backed RAM
failure
Replace CPU
F4/5
Internal clock
battery
Heaters remain on,
but fault condition
persists
Battery‐backed RAM
battery dead
Replace CPU
F4/6 Analog‐to‐digital
Melter stops
functioning
RTD analog‐to‐digital
converter failed
Replace main board or
CPU
Continued...
Operation
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Part 1126931_01
2018 Nordson Corporation
Table 4‐1 Melter Faults (contd)
Display
Code/Sub‐code
Name Affect on Melter Cause Corrective Action
F4/7
Analog‐to‐digital
calibration
Melter stops
functioning
Failed hose or
applicator
RTD analog‐to‐digital
converter could not be
calibrated (grounded
RTD in system)
Replace hose or
applicator. Note: Set
setpoint to zero to avoid
F1 fault.
Replace main board or
ribbon cable, or CPU
F4/8
Main board
feedback
Melter stops
functioning
Communication failure
between main board
and CPU
Replace main board,
ribbon cable, or CPU
F4/9
Expansion board
feedback
Melter stops
functioning
Communication failure
between expansion
board and main board
Check the ribbon cable
connections between
the expansion board
and the main board.
F4/A Thermostat
Melter stops
functioning
Tank or manifold
thermostat is open
Replace thermostat, J7
harness, or main board
F4/d
Communications
with optional I/O
card
Heaters remain on,
but fault condition
persists
Communication failure
between CPU and the
optional I/O card
Replace the I/O card or
CPU
F4/E
Fieldbus
communications
failure
Alert output (if output
option 6 is selected)
Melter continues to
operate normally.
Fieldbus card failure.
Replace the Fieldbus
card
F1, F2 and F3 Faults
When the melter detects an F1, F2, or an F3 fault:
1. The automatic scan stops and the melter begins to monitor the potential
fault for up to two minutes. The ready and heater LEDs remain on during
the two‐minute time period. If, at any time during the two‐minute period,
the melter detects that the fault condition no longer exists, the melter will
return to the automatic scan mode.
2. The LED on the affected component key (tank, hose, or applicator) turns
on to indicate the type of component that has, or is, failing.
3. The right display indicates the type of fault (F1, F2, or F3).