DuraBlue II Customer Product Manual - 第72页

Operation 4-10 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, t…

LEDs on component keys

Left display and

scroll key

Component temperature display

Operation

4-9

Part 1126931_01

 2018 Nordson Corporation

Monitor Component Temperatures

The actual temperature of each heated component—the tank and each hose

and applicator—can be checked via normal mode or by manually selecting

and checking each component.

By default, the melter remains in the automatic scan mode except when:

 The melter is placed into the setup mode

 The set‐point temperature of all hoses and applicators is set to zero

degrees

 A fault occurs

To check component temperatures using the automatic scan mode

1. When the ready LED is on, observe the LEDs on the component keys.

2. When the LED on the key that represents the desired component

group (tank, hose, or applicator) turns on, observe the left display until it

indicates the position number of the specific component you want to

check.

3. When the position number of the desired component appears in the

left display, observe the right display to determine the component's

actual temperature.

To manually check a component's temperature

1. Press the key (tank, hose, or applicator) that represents the component

group you want to check.

The automatic scan stops and the left display indicates the number of the

first sequential component in the selected component group. The right

display indicates the component's actual temperature.

NOTE: When the tank key is pressed, the left display does not indicate a

component number (blank display).

2. If the first sequential component is not the component you want to check,

use the left‐display scroll key to change to the correct

component number.

The right display indicates the actual temperature of the

selected component.

3. Press the Setup key twice to return to the automatic scan mode.

Operation

4-10

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

4-11

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

parameter22.

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

parameter21.

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...