9. Maintenance and Inspection
- 266 -
9
9.3 Lifetime of Fans and Electrolytic DC Bus Capacitors
Wearing components of the AC drive include the cooling fan and bus electrolytic capacitor. Their
service life is related to the operating environment and maintenance status. Generally, the service life
is shown as follows:
Component Service Life Possible Cause Judging Criteria
Fan \HDUV
Ɣ
Bearing worn
Ɣ
Blade aging
Ɣ
Whether there is crack on the
blade
Ɣ
Whether there is abnormal
vibration noise upon startup
Electrolytic
DC Bus
Capacitor
\HDUV
Ɣ
Input power supply in poor
quality
Ɣ
High ambient temperature
Ɣ
Frequent load jumping
Ɣ
Electrolytic aging
Ɣ
Whether there is liquid leakage.
Ɣ
Whether the safe valve has
projected.
Ɣ
Measure the static capacitance.
Ɣ
Measure the insulation resistance.
The standard service time indicates the service time when the AC drive is used on the following
conditions:
Ɣ
Ambient temperature: about 40°C on average yearly
Ɣ
Load rate: below 80%
Ɣ
Operating rate: below 24 hours per day
You can determine when to replace these parts according to the actual operating time.
Ƶ
Number of Fans on the Drive
MD290 Model Number of Fans
MD290T18.5G/22P MD290T22G/30P 1
MD290T30G/37P MD290T37G/45P 1
MD290T45G/55P MD290T55G/75P 1
MD290T75G/90P MD290T90G/110P 2
MD290T110G/132P MD290T132G/160P 2
MD290T160G/200P - 2
MD290T200G(-L) MD290T220P(-L)/ 2
MD290T250P(-L) - 2
MD290T220P(-L) MD290T250P(-L) 2
MD290T220G(-L) MD290T280P(-L) 2
MD290T250G(-L) MD290T315P(-L) 3
MD290T280G(-L) MD290T355P(-L) 3
MD290T315G(-L) MD290T400P(-L) 3
MD290T355G(-L) MD290T450P(-L) 3
MD290T400G(-L) MD290T500P(-L) 3
MD290T450G(-L) - 3
To Next Page
Loading...
Need help?
General