Eaton MMX12 Series - Maintenance and Inspection; Storage; Charging DC Link Capacitors; Service and Warranty

M-Max
TM
Series
04/10 MN04020001Z-EN
22
Maintenance and inspection
Provided that the general rating data (see Section “Rating data on
the nameplate”, page 14) and the special technical data
( a section “Special technical data” in the Appendix) of the
ratings concerned are observed, the M-Max
TM
frequency inverters
are maintenance free. However, external influences may affect the
function and the lifespan of the M-Max
TM
frequency inverter. We
therefore recommend that the devices are checked regularly and
the following maintenance measures are carried out at the
specified intervals.
There are no plans for replacing or repairing individual
components of M-Max
TM
frequency inverters.
If the M-Max
TM
frequency inverter is damaged by external
influences, repair is not possible. Dispose of the device in
accordance with the respectively applicable environmental laws
and provisions for the disposal of electrical or electronic devices.
Storage
If the frequency inverter is stored before use, suitable ambient
conditions must be ensured at the site of storage:
• Storage temperature: -40 - +70 °C,
• Relative average air humidity: < 95 %, non condensing
(EN 50178),
• To prevent damage to the DC link capacitors, storage times
longer than 12 months are not recommended (see Section
“Charging DC link capacitors”).
Charging DC link capacitors
After long storage times or long down times without a power
supply (> 12 months), the capacitors in the DC link must undergo
controlled recharging, in order to avoid damage.
For this the M-Max
TM
frequency inverters must be fed with a
regulated DC power supply unit via two mains connection
terminals (e.g. L1, L2/N). To avoid any possible excessive leakage
currents from the capacitors, the inrush current should be limited
to around 300 to 800 mA (depending on the rating). In this case,
the frequency inverter must not be enabled (no start signal). The
DC voltage must then be set to the values of the corresponding DC
link voltage (U
DC
) and fed for around two hours (regeneration
time).
• MMX12, MMX32 about 324 V DC (= 1.41 x U
LN
) with single-
phase line-to-line voltage (230 V)
• MMX34 about 540 V DC (= 1.35 x U
LN
) with three-phase line-
to-line voltage (400 V).
Service and warranty
In the unlikely event that you have a problem with your Moeller M-
Max
TM
frequency inverter, please contact your local sales office.
When you call, have the following information ready:
• the exact frequency inverter part no.
(see nameplate),
• the date of purchase,
• a detailed description of the problem which has occurred with
the frequency inverter.
If some of the information printed on the nameplate is not legible,
please state only the information which is clearly legible.
Information concerning the guarantee can be found in the Moeller
General Terms and Conditions of Sale.
24-hour hotline: +49 (0)1805 223 822
E-Mail: FieldserviceEGBonn@Eaton.com
Maintenance measures Maintenance interval
Clean cooling vents (cooling slits) If required
Check the fan function 6 - 24 months (depending on the environment)
Filter in the switching cabinet doors (see manufacturer specifications) 6 - 24 months (depending on the environment)
Check the tightening torques of the terminals (control signal terminals, power
terminals)
Regularly
Check connection terminals and all metallic surfaces for corrosion 6 - 24 months (depending on the environment)
Charge capacitors 12 months, see Section “Charging DC link capacitors”
h
MMX11: Due to the internal voltage doubler circuit, the
capacitors cannot be recharged via the connection
terminals. Contact your local sales partner.