advertisement
Inspection item
5.1.6
Replacement of parts
The inverter consists of many electronic parts such as semiconductor devices.
The following parts may deteriorate with age because of their structures or physical characteristics, leading to reduced performance or fault of the inverter. For preventive maintenance, the parts must be replaced periodically.
Use the life check function as a guidance of parts replacement.
Part name
Cooling fan, internal fan
Main circuit smoothing capacitor
On-board smoothing capacitor
Relays
Gasket
Estimated lifespan
10 years
10 years
10 years
―
2 years
Description
Replace (as required)
Replace (as required)
Replace the board (as required)
As required
Replace (as required)
Estimated lifespan for when the yearly average ambient temperature is 35°C.
(without corrosive gas, flammable gas, oil mist, dust and dirt etc.)
Output current: 80% of the inverter rating
The estimated lifespan is only a guide. To maintain the waterproof and dustproof performances of the inverter, daily and periodic inspections are recommended.
NOTE
• For parts replacement, contact the nearest Mitsubishi FA center.
Displaying the life of the inverter parts
Pr.
Name
Initial value
Setting range
Description
255
E700
Life alarm status display 0 (0 to 31)
Displays whether or not the parts of the control circuit capacitor, main circuit capacitor, cooling fan, and inrush current limit circuit have reached the life alarm output level.
Read-only.
Whether or not the parts of the control circuit capacitor, main circuit capacitor, cooling fan, inrush current limit circuit or internal air circulation fans have reached the life alarm output level can be checked with Pr.255 Life alarm status display and the life alarm signal (Y90).
bit 15 7 0
0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1
• Pr.255
read • Pr.255
setting read bit0 Control circuit capacitor life bit1 Main circuit capacitor life bit2 Cooling fan life bit3 Inrush current limit circuit life bit4 Life of internal air circulation fans
Bit image is displayed in decimal
The self-diagnostic warning is output when the life span of each part is near its end. It gives an indication of replacement time.
The life warning output can be used as a guideline for life judgment.
Parts Judgment level
Main circuit capacitor
Control circuit capacitor
85% of the initial capacity
Estimated remaining life 10%
Inrush current limit circuit Estimated remaining life 10% (Power ON: 100,000 times left)
Cooling fan, internal air circulation fan Less than 70% of the specified speed.
NOTE
• Refer to the FR-F800 Instruction Manual (Detailed) to perform the life check of the inverter parts.
84
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Inspection item
Life display of internal air circulation fans
• IP55 compatible models are equipped with the internal air circulation fan inside the inverter other than the cooling fan.
The internal fan fault "FN2" appears on the operation panel (FR-LU08-01) when the rotations per minute is less than
70% of the rated value for the internal air circulation fan. (FN is displayed on the parameter unit (FR-PU07).) As an alarm display, Pr.255 bit 4 is turned ON and also a warning is output to the Y90 signal and Alarm (LF) signal.
• For the terminal used for the LF signal, set "98 (positive logic) or 198" (negative logic) in any of Pr.190 to Pr.196
(Output terminal function selection) .
NOTE
• Changing the terminal assignment using Pr.190 to Pr.196 (Output terminal function selection) may affect the other functions. Set parameters after confirming the function of each terminal.
• For replacement of each part, contact the nearest Mitsubishi Electric FA center.
Replacement procedure of the fan
The replacement interval of the cooling fan used for cooling the parts generating heat such as the main circuit semiconductor is greatly affected by the ambient temperature. When unusual noise and/or vibration are noticed during inspection, the cooling fan must be replaced immediately.
NOTE
• Switch the power OFF before replacing fans. Even after the power supply is shut off, the inverter is charged and can cause an electric shock. Before replacing the fan, make sure to check that the voltage across inverter main circuit terminals P/+ and
N/- has been dropped enough using a tester after 10 minutes or more after the power supply shutoff.
Removal of the cooling fan (FR-F846-00250(11K) to 00470(22K))
(1) Remove the installation screws, and then remove the fan cover.
Fan cover
(2) Disconnect the fan connectors.
Installation screw
Fan connector
(3) Remove the installation screws, and then remove the fan.
Installation screw
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
85
5
Inspection item
Removal of the cooling fan (FR-F846-00620(30K) to 01160(55K))
(1) Remove the installation screws, and then remove the fan cover.
Fan cover
Installation screw
(2) Disconnect the fan connectors.
Fan connector
(3) Remove the installation screws, and then remove the fan.
Installation screw
86
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Removal of the cooling fan (FR-F846-01800(75K) to 03610(160K))
(1) Remove the installation screws, and then remove the fan cover.
Inspection item
(2) Disconnect the fan connectors.
Fan connector
(3) Remove the installation screws, and then remove the fan.
Installation screw
Fan cover
Installation screw
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
87
5
Inspection item
Reinstallation of the cooling fan (FR-F846-00250(11K) to 00470(22K))
(1) After confirming the orientation of the fan, reinstall the fan so that the "AIR FLOW" faces up. Then, fix the fan with the installation screws. (tightening torque 1.4 to 1.9 N•m)
AIR FLOW
<Fan side>
Installation screw
(2) Route the fan lead through the clamp, and then reconnect the fan connectors.
Fan connector
(3) Attach the fan cover with the installation screws. (tightening torque 1.4 to 1.9 N•m)
Fan cover
Installation screw
NOTE
• Installing the fan in the opposite direction of air flow can cause the inverter life to be shorter.
• Prevent the cable from being caught when installing a fan.
88
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Inspection item
Reinstallation of the cooling fan (FR-F846-00620(30K) to 01160(55K))
(1) After confirming the orientation of the fan, reinstall the fan so that the "AIR FLOW" faces up. Then, fix the fan with the installation screws. (tightening torque 1.4 to 1.9 N•m)
AIR FLOW
<Fan side>
Installation screw
(2) Route the fan lead through the clamp, and then reconnect the fan connectors.
Fan connector
(3) Attach the fan cover with the installation screws. (tightening torque 1.4 to 1.9 N•m)
Fan cover
Installation screw
NOTE
• Installing the fan in the opposite direction of air flow can cause the inverter life to be shorter.
• Prevent the cable from being caught when installing a fan.
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
89
5
Inspection item
Reinstallation of the cooling fan (FR-F846-01800(75K) to 03610(160K))
(1) After confirming the orientation of the fan, reinstall the fan so that the "AIR FLOW" faces up. Then, fix the fan with the installation screws. (tightening torque 1.4 to 1.9 N•m)
AIR FLOW
<Fan side>
Installation screw
(2) Reconnect the fan connectors.
Fan connector
(3) Attach the fan cover with the installation screws. (tightening torque 1.4 to 1.9 N•m)
Fan cover
Installation screw
NOTE
• Installing the fan in the opposite direction of air flow can cause the inverter life to be shorter.
• Prevent the cable from being caught when installing a fan.
90
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Removal of the internal fan (FR-F846-00170(7.5K) or lower)
(1) Remove the inverter front cover. (Refer to
(2) Move the fan connector case, and then remove the fan connector.
Fan connector
Connector case
(3) Remove the installation screws, and then remove the bracket.
Bracket
Installation screw
(4) Remove the installation screws, and then remove the fan.
Bracket
Fan
Installation screw
Inspection item
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
91
5
Inspection item
Removal of the internal fan (FR-F846-00250(11K) to 00470(22K))
(1) Remove the inverter front cover. (Refer to page 15
)
(2) Remove the installation screws, and then remove the protective cover.
Protective cover
(3) Move the fan connector case, and then remove the fan connector.
Installation screw
Fan connector
Connector case
(4) Remove the bracket.
Bracket
(5) Remove the installation screws, and then remove the fan.
Bracket
Fan
Installation screw
92
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Removal of the internal fan (FR-F846-00620(30K) to 01160(55K))
(1) Remove the inverter front cover. (Refer to
(2) Move the fan connector case, and then remove the fan connector.
Fan connector
Connector case
Inspection item
(3) Remove the installation screws and the bracket, and then remove the fan.
Installation screw
Bracket
Fan
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
93
5
Inspection item
Removal of the internal fan (upper) (FR-F846-01800(75K) to 02600(110K))
(1) Remove the inverter front cover. (Refer to page 15
)
(2) Move the fan connector case, and then remove the fan connector.
Fan connector
Connector case
(3) Remove the installation screws, and then remove the fan.
Fan
Installation screw
Removal of the internal fan (lower) (FR-F846-01800(75K) to 02600(110K))
(1) Remove the inverter front cover. (Refer to page 15
)
(2) Move the fan connector case, and then remove the fan connector.
(3) Remove the installation screws, and then remove the bracket.
Bracket
Fan connector
Connector case
Installation screw
(4) Remove the installation screws, and then remove the fan.
Bracket
Fan
Installation screw
94
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Removal of the internal fan (upper) (FR-F846-03250(132K) or higher)
(1) Remove the inverter front cover. (Refer to
(2) Move the fan connector case, and then remove the fan connector.
Inspection item
Fan connector
(3) Remove the installation screws, and then remove the bracket.
Installation screw
Connector case
Bracket
(4) Remove the installation screws, and then remove the fan.
Fan
Installation screw
Bracket
Removal of the internal fan (lower) (FR-F846-03250(132K) or higher)
(1) Remove the inverter front cover. (Refer to
(2) Move the fan connector case, and then remove the fan connector.
Connector case
Fan connector
(3) Remove the installation screws, and then remove the bracket.
Installation screw
Bracket
(4) Remove the installation screws, and then remove the fan.
Fan
Bracket
Installation screw
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
95
5
Inspection item
Reinstallation of the internal fan (FR-F846-00170(7.5K) or lower)
(1) After confirming the orientation of the fan, fix the fan to the bracket with the installation screws so that the "AIR FLOW" arrow on the fan side faces up when the fan is installed to the inverter. (tightening torque 1.4 to 1.9 N•m)
Bracket
AIR FLOW
Fan
<Fan side>
Installation screw
(2) Fix the bracket to the inverter with the installation screws. (tightening torque 1.4 to 1.9 N•m)
Bracket
Installation screw
(3) Reconnect the fan connector, and then place the connector case from the above.
Fan connector
Connector case
(4) Reinstall the inverter front cover. (Refer to
NOTE
• Installing the fan in the opposite direction of air flow can cause the inverter life to be shorter.
• Prevent the cable from being caught when installing a fan.
96
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Inspection item
Reinstallation of the internal fan (FR-F846-00250(11K) to 00470(22K))
(1) After confirming the orientation of the fan, fix the fan to the bracket with the installation screws so that the "AIR FLOW" arrow on the fan side faces up when the fan is installed to the inverter. (tightening torque 1.4 to 1.9 N•m)
Bracket
AIR FLOW
<Fan side> Fan
Installation screw
(2) Attach the bracket to the inverter.
Bracket
(3) Reconnect the fan connector, and then place the connector case from the above.
Fan connector
Connector case
(4) Fix the protective cover with the installation screws. (tightening torque 1.4 to 1.9 N•m)
Protective cover
Installation screw
(5) Reinstall the inverter front cover. (Refer to
NOTE
• Installing the fan in the opposite direction of air flow can cause the inverter life to be shorter.
• Prevent the cable from being caught when installing a fan.
• The wiring may contact the fan and be damaged. Always insert the protective cover.
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
97
5
Inspection item
Reinstallation of the internal fan (FR-F846-00620(30K) to 01160(55K))
(1) Fix the fan to the inverter with the bracket and the installation screws. (tightening torque 1.4 to 1.9 N•m)
After confirming the orientation of the fan, reinstall the fan so that air flows as shown below.
(The "AIR FLOW" arrow on the fan side indicates the air flow direction.)
Fan
Installation screw
Bracket
AIR FLOW
<Fan side>
Air flow direction
Installation screw Bracket Fan Inverter
View of fan side and surrounding
(2) Reconnect the fan connector, and then place the connector case from the above.
Fan connector
Connector case
(3) Reinstall the inverter front cover. (Refer to
NOTE
• Installing the fan in the opposite direction of air flow can cause the inverter life to be shorter.
• Prevent the cable from being caught when installing a fan.
98
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Inspection item
Reinstallation of the internal fan (upper) (FR-F846-01800(75K) to 02600(110K))
(1) Fix the fan to the inverter with the installation screws. (tightening torque 1.4 to 1.9 N•m)
After confirming the orientation of the fan, reinstall the fan so that air flows as shown below.
(The "AIR FLOW" arrow on the fan side indicates the air flow direction.)
Fan
Installation screw
AIR FLOW
<Fan side>
Air flow direction
Installation screw Fan Inverter
View of fan side and surrounding
(2) Reconnect the fan connector, and then place the connector case from the above.
Fan connector
Connector case
(3) Reinstall the inverter front cover. (Refer to
NOTE
• Installing the fan in the opposite direction of air flow can cause the inverter life to be shorter.
• Prevent the cable from being caught when installing a fan.
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
99
5
Inspection item
Reinstallation of the internal fan (lower) (FR-F846-01800(75K) to 02600(110K))
(1) Fix the fan to the bracket with the installation screws. (tightening torque 1.4 to 1.9 N•m)
After confirming the orientation of the fan, reinstall the fan so that air flows as shown below.
(The "AIR FLOW" arrow on the fan side indicates the air flow direction.)
Bracket
Fan
Installation screw
AIR FLOW
<Fan side>
Air flow direction
Bracket Fan Installation screw
View of fan side and surrounding
(2) Attach the bracket to the inverter.
Bracket
Installation screw
(3) Reconnect the fan connector, and then place the connector case from the above.
Fan connector
Connector case
(4) Reinstall the inverter front cover. (Refer to
NOTE
• Installing the fan in the opposite direction of air flow can cause the inverter life to be shorter.
• Prevent the cable from being caught when installing a fan.
100
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Inspection item
Reinstallation of the internal fan (upper) (FR-F846-03250(132K) or higher)
(1) Fix the fan to the bracket with the installation screws. (tightening torque 1.4 to 1.9 N•m)
After confirming the orientation of the fan, reinstall the fan so that air flows as shown below.
(The "AIR FLOW" arrow on the fan side indicates the air flow direction.)
Fan
Bracket
Installation screw
AIR FLOW
<Fan side>
(2) Attach the bracket to the inverter.
Installation screw
Air flow direction
Installation screw Fan Bracket
View of fan side and surrounding
Bracket
(3) Reconnect the fan connector, and then place the connector case from the above.
Connector case
Fan connector
(4) Reinstall the inverter front cover. (Refer to
NOTE
• Installing the fan in the opposite direction of air flow can cause the inverter life to be shorter.
• Prevent the cable from being caught when installing a fan.
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
101
5
Inspection item
Reinstallation of the internal fan (lower) (FR-F846-03250(132K) or higher)
(1) Fix the fan to the bracket with the installation screws. (tightening torque 1.4 to 1.9 N•m)
After confirming the orientation of the fan, reinstall the fan so that air flows as shown below.
(The "AIR FLOW" arrow on the fan side indicates the air flow direction.)
Fan
Bracket
Installation screw
AIR FLOW
<Fan side>
(2) Attach the bracket to the inverter.
Air flow direction
Bracket Fan Installation screw
View of fan side and surrounding
Installation screw
Bracket
(3) Reconnect the fan connector, and then place the connector case from the above.
Connector case
Fan connector
(4) Reinstall the inverter front cover. (Refer to
NOTE
• Installing the fan in the opposite direction of air flow can cause the inverter life to be shorter.
• Prevent the cable from being caught when installing a fan.
Smoothing capacitors
A large-capacity aluminum electrolytic capacitor is used for smoothing in the main circuit DC section, and an aluminum electrolytic capacitor is used for stabilizing the control power in the control circuit. Their characteristics are deteriorated by the adverse effects of ripple currents, etc. The replacement intervals greatly vary with the ambient temperature and operating conditions. When the inverter is operated in air-conditioned, normal environment conditions, replace the capacitors about every 10 years.
The appearance criteria for inspection are as follows:
• Case: Check the side and bottom faces for expansion.
• Sealing plate: Check for remarkable warp and extreme crack.
• heck for external crack, discoloration, liquid leakage, etc. Judge that the capacitor has reached its life when the measured capacitance of the capacitor reduced below 80% of the rating.
102
NOTE
• The inverter diagnoses the main circuit capacitor and control circuit capacitor by itself and can judge their lives. (Refer to the
FR-F800 Instruction manual (Detailed).)
advertisement
Related manuals
advertisement