Packing machine electrical parts maintenance
WELPACK has been advocating the use of high-efficiency and low-cost preventive maintenance, strengthening packaging machine maintenance and maintenance, so that the packaging machine is in an efficient operation state, fully exerting efficiency, extending service life, and obtaining the best economic benefits for user companies.
Packing machine electrical parts maintenance:
In the season of high temperature and rain, and hot and humid air, electrical components are prone to failure. First of all, we will introduce the maintenance and content of electrical components of the packaging machine.
Control cabinet and operation part:
1. The exterior of the cabinet is clean and tidy. The touch screen on the panel, the handle of the main power switch, the indicator light, the operation buttons, and the door and door lock are intact.
2. The cooling element (cooling fan) in the cabinet works normally.
3. The electrical components in the cabinet are clean, free of dirt and defects, and there are no extraneous debris in the cabinet, especially metal objects.
4. The identification of all electrical switches in the cabinet is correct, complete, and does not fall off.
5. All electrical appliances in the cabinet are fastened firmly, the leads are neat and tidy, and there is no looseness of the lead joints (including the ground wire point), or overheating, discoloration and aging.
6. Without the permission of the equipment department, anyone is strictly prohibited to modify or adjust the controller (such as inverter, servo drive, etc.) parameter adjustment and setting, and it is strictly forbidden to change the electrical circuit at will.
External control circuit of the control cabinet:
1. The control lines are free from oil, damage, overheating, insulation aging, and chemical corrosion.
2. The control lines are neatly and orderly, and there is no hidden danger of the interference of mechanical parts.
The control part in the cabinet:
1. Check whether the PLC wiring is good and reliable, without aging and loosening.
2. Some types of PLC (Schneider, Mitsubishi, etc.) are equipped with batteries, and it is necessary to regularly check the power alarm indicator on the PLC. If an alarm is found or the battery power is insufficient, a new battery needs to be replaced in time.
3. If the equipment is in a state of being out of production for a long time, it is necessary to power on the equipment for not less than 2 hours every day.
Input or sensor parts:
1. Because each sensor device is a fragile, high-fault point device, it needs to be inspected to prevent other mechanical action failures or accidents caused by uncleanness, looseness, malfunction, etc.
2. Check that the appearance of each sensor is clean and intact.
3. Check the tightness of each sensor.
4. Check whether the motion of each sensor is sensitive and reliable.
5. Check the wiring of each sensor device to see if it is intact.
Output execution part:
1. The output execution parts (such as motor, relay, contactor, solenoid valve, electric heater, etc.) are all vulnerable parts, which need to be checked frequently.
2. Check the cleanliness of such devices.
3. Check whether the working current of the motor, transformer, electric heater, etc. is normal.
4. The appearance of the motor is good, there is no accumulation of oil dirt, and the sound of operation and operation is normal.
5. Check whether the wiring of such devices is good and reliable, without aging and loosening.
Common faults and troubleshooting methods:
|
Fault |
Cause Analysis |
Elimination Method |
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Unstable color capture |
1. The color mark detector is set abnormally |
Reset the color mark detector |
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2. The fiber is not fixed |
Reseat the connection fiber |
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3. The distance between the roll color scales is inconsistent |
Replace roll film |
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4. The color code color is too close to the background color |
Replace the roll film with obvious color contrast difference |
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5. The distance of the color code detector to the color code is wrong |
Adjust the distance from the color code detector to the color code to a suitable position |
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6. The encoder connection is broken or loose, causing the encoder angle to change abnormally |
Reconnect the encoder |
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7. The resistance of the packaging film is abnormal |
Check whether the machine has stuck film and eliminate it in time |
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8. The color mark detector is not in the correct position for the color mark |
Adjust the color mark detector to the color mark position |
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The machine can't stop normally |
1. The encoder is damaged |
Replace the encoder |
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2. The encoder and the spindle are not well connected |
Reset connection |
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3. The encoder input and output lines are abnormal |
Reset the connection line |
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The machine won't start |
1. The emergency stop button is pressed |
Restart after reset |
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2. The electric gate is not fully opened |
Open the electric switch in the electrical box |
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3. There is an alarm signal |
Find the cause of the alarm first, and then eliminate the alarm signal |
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Inverter abnormal alarm |
1. The external voltage is abnormal |
Check the "Inverter Operation Manual" to solve the problem through touch screen operation |
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2. The neutral circuit is abnormal |
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3. The output voltage is abnormal |
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Abnormal display of temperature controller |
1. The temperature controller is damaged |
Replace the temperature controller |
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2. Thermocouple damaged |
Replace thermocouple |
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3. The heating rod is damaged |
Replace heating rod |
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4. Wiring is broken or loose |
Reconnect wiring |
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5. The positive and negative electrodes of the thermocouple are wrongly connected (the temperature controller displays a negative value) |
Exchange the positive and negative poles |
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The display does not show |
The display is not well connected to the PLC |
reconnect |
For More information, please contact us:
info@welpackgroup.com
