Eaton MMX12 Series - Abbreviations and Symbols; Mains Supply Voltages; Units

04/10 MN04020001Z-EN
Abbreviations and Symbols
7
Abbreviations and Symbols
The following symbols and abbreviations are used in this manual:
M-Max
TM
frequency converters are divided into three voltage
categories:
• 100 V (MMX11)
• 200 V (MMX12…, MMX32…)
• 400 V (MMX34…)
Mains supply voltages
The rated operating voltages stated in the following table are
based on the standard values for networks with a grounded star
point.
In ring networks (as found in Europe) the rated voltage at the
transfer point of the power supply companies is the same as the
value in the consumer networks (e.g. 230 V, 400 V).
In star networks (as found in North America), the rated voltage at
the transfer point of the utility companies is higher than in the
consumer network. Example: 120 V l 115 V, 240 V l 230 V,
480 V l 460 V.
The wide tolerance range of frequency inverter M-Max
TM
takes
into account a permissible voltage drop of an additional 4 %
(U
LN
- 14 %) in load networks, while, in the 400 V category, it
takes into account the North American line voltage of
480 V +10 % (60 Hz).
The permissible connection voltages for the M-Max
TM
series are
listed in the Technical Specifications section in the appendix.
The rated operational data of the mains voltage is always based
on the mains frequencies 50/60 Hz (50 Hz -10 % - 60 Hz +10 %).
Units
Every physical dimension included in this manual uses interna-
tional metric system units, otherwise known as SI (Système Inter-
national d’Unités) units. For the purpose of the equipment's UL
certification, some of these dimensions are accompanied by their
equivalents in imperial units.
Table 1: Unit conversion examples
EMC
Electromagnetic compatibility
FS Frame size
GND Ground, 0 V potential
IGBT
Insulated-gate bipolar transistor
PDS Power Drives System
LCD
Liquid Crystal Display
PES
EMC connection to PE for shielded lines
PNU Parameter number
UL Underwriters Laboratories
Designation US-American value SI value Conversion value US-American
designation
Length 1 inch (’’) 25.4 mm 0.0394 inch
Power
1 HP = 1.014 PS 0.7457 kW 1.341 horsepower
Torque 1 lbf in 0.113 Nm 8.851 pound-force inches
Temperature 1°F (T
F
) -17.222 °C (T
C
) T
F
=T
C
x9/5+32 Fahrenheit
Speed 1rpm 1min
-1
1 Revolutions per minute
Weight 1lb 0.4536 kg 2.205 pound