1 Outline
1-16
1.7
Combinations for Multi-Winding Drive Systems
This section gives the combinations for a multi-winding drive system.
1.8
Inspection and Maintenance of a Multi-Winding Drive System
This section describes the inspection and maintenance of a multi-winding drive system.
(1) Inspections for a Multi-Winding Drive System
The multi-winding drive unit, SERVOPACKs, and converters do not need to be inspected every day. Perform
the following inspections at least once every year. Other routine inspections are not required.
(2) Parts Replacement Schedule for a Multi-Winding Drive System
The following electric or electronic parts in the multi-winding drive unit, SERVOPACKs, and converters are
subject to mechanical wear or deterioration over time. Refer to the following tables for the standard replace-
ment periods.
Multi-Winding Drive Unit
SERVOPACKs and Converters
Note: The standard replacement period is given for usage under the following operating conditions.
• Surrounding air temperature: Annual average of 30°C
• Load factor: 80% max.
• Operation rate: 20 hours/day max.
Main Circuit
Power
Supply
Voltage
Servomotor
SERVOPACKs
Converters
Multi-Winding
Drive Unit
Motor Speed
Model:
SGMVV-
Capacity
Model: SGDV-
Model:
SGDV-COA
Model: JUSP-
Three-
phase, 400
VAC
1500 min
-1
7ED
B
75 kW
101J
5EDA
MD3D
A
Item
Frequency
Procedure
Comments
Exterior
At least once a year
Check for dust, dirt, and oil
on the surfaces.
Clean with compressed air.
Loose Screws
Check for loose terminal
block and connector
screws.
Tighten any loose screws.
Part
Standard
Replacement Period
Operating Conditions
Electrolytic
Capacitor
10 years
• Surrounding air temperature: Annual average of 30°C
• Operation rate: 20 hours/day max.
Part
Standard Replacement Period
Cooling Fan
4 to 5 years
Smoothing Capacitor
7 to 8 years
Other Aluminum Electrolytic Capacitor
5 years
Relays
–
Fuses
10 years
The parameters of any multi-winding drive unit overhauled by Yaskawa are reset to the
factory settings before shipping. Be sure to confirm that the parameters are properly set
before starting operation.
