DuraBlue II Customer Product Manual - 第116页

Troubleshooting 6-4 Part 1126931_01  2018 Nordson Corporation Melter Faults (contd) Table 6‐1 Melter Faults (contd) Display Code/Sub‐code Name Affect on Melter Cause Corrective Action F4/7 Analog‐to‐digital calibration …

Troubleshooting

6-3

Part 1126931_01

 2018 Nordson Corporation

Melter Faults

Table 6‐1 lists the four types of melter faults, potential causes, and expected

corrective actions.

Table 6‐1 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/gun

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...

Troubleshooting

6-4

Part 1126931_01

 2018 Nordson Corporation

Melter Faults (contd)

Table 6‐1 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 gun

RTD analog‐to‐digital

converter could not be

calibrated (grounded

RTD in system)

Replace hose or gun.

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

Pump speed display

Troubleshooting

6-5

Part 1126931_01

 2018 Nordson Corporation

Motor Control Faults

Table 6‐2 lists the motor control fault codes that may appear on the pump

speed display(s).

Table 6‐2 Motor Control Faults

Motor Control Fault Possible Cause Corrective Action

no EnA (motor control fault code

shown on pump speed display)

Master pump enable key not

turned on

Press the Master pump enable

key until the LED is illuminated.

hOt (motor control fault code

shown on pump speed display)

Motor thermostat open Wait for the motor to cool, ensure

that the pump speed setting is

not too low, and then restart the

pump. If the hOt code continues

to appear, troubleshoot the

problem that is causing the motor

to overheat, such as binding or

blockage in the pump, a locked

pump rotor, etc.

Displayed rpms do not match

motor speed

Pump speed display not

calibrated

Calibrate the pump speed

display. Refer to Calibrating the

Pump Speed Display.

Motor control not operating as

expected

Improper motor control

parameter settings

Check motor control parameter

settings. Refer to Changing a

Motor Control Parameter in this

section.