M-Max Series Overview
M-Max Series Adjustable Frequency Drive MN04020003E—October 2013 www.eaton.com 17
Storage
If the frequency inverter is stored before use, suitable
ambient conditions must be ensured at the site of storage:
●
Storage temperature: –40° to 158°F (–40° to 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 “Charging DC Link Capacitors” below)
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 frequency inverters must be fed with a
regulated DC power supply unit via two input connection
terminals (for example, 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 Vdc (= 1.41 x U
LN
) with
single-phase line-to-line voltage (230V)
●
MMX34 about 540 Vdc (= 1.35 x U
LN
) with three-phase
line-to-line voltage (400V)
●
MMX35 (contact your local Eaton sales office for details)
MMX11: Due to the internal voltage doubler circuit, the
capacitors cannot be recharged via the connection terminals.
Contact your local Eaton distributor or sales office.
Service and Warranty
In the unlikely event that you have a problem with your
M-Max frequency inverter, please contact Eaton Care
Customer Support Center at 877-ETN-CARE (877-386-2273);
option 2
option 6
option 3
or email: VFDaftermarketEG@eaton.com.
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 that has occurred
with the frequency inverter
If some of the information printed on the nameplate is not
legible, please state only the information that is clearly
legible. This information can also be found under the cover of
the control terminals.
Information concerning the guarantee can be found in the
Eaton General Terms and Conditions of Sale.
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