DuraBlue II Customer Product Manual - 第117页

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 F…

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.

Control switch

Pump speed arrow keys

Troubleshooting

6-6

Part 1126931_01

 2018 Nordson Corporation

Changing a Motor Control Parameter

The motor control parameters are factory set and do not need to be changed.

Use this procedure only if a motor control parameter is inadvertently changed

and needs to be changed back to the factory setting shown in Table 6‐3. The

motor control parameters are changed through the motor control panels

located on the front of the melter.

To change the a motor control parameter

1. Place the main power switch in the OFF position.

2. Place the control switch in the OFF position.

3. Press and hold both Pump speed arrow keys and then switch the

control switch back on. When the pump speed display indicates SEt,

release the keys.

4. Use the Pump speed arrow keys to select a value for the parameter

shown on the pump speed display. Refer to Table 6‐3 for a parameter list.