M-Maxâ„¢ Series Adjustable Frequency Drive - Eaton Corporation

Installation
Connection to Power Section
The following figure shows the general connections for the
frequency inverter in the power section.
Three-Phase Input Connection
3 AC, PE
Connection to Power Section
MMX11_
L1 L2/N L3 U/T1V/T2W/T3
Input
L2/N
L3
PE L1 N
PE
M
3 ~
PES
MMX12_
L1
Input
L2/N
PE L1 N
32 M-Max Series Adjustable Frequency Drive MN04020003E—April 2011 www.eaton.com
Terminal Designations in the Power Section
● L1, L2/N, L3: Connection terminals for the supply voltage
(input, input voltage):
● Single-phase AC voltage: connection to L2/N and L3 on
MMX11_
● Single phase AC voltage: Connection to L1 and L2/N
with MMX12_
● Three-phase AC voltage: Connection to: L1, L2/, L3 with
MMX32_, MMX34_ and MMX35_.
● U/T1, V/T2, W/T3: Connection terminals for the
three-phase line to the AC motor (output, frequency
inverter)
● PE: connection for protective ground (reference
potential). PES with mounted cable routing plate for
shielded cables
● R+, R–: Connection terminals for external brake resistance
(only with MMX32_, MMX34_ and MMX35_, output
braking transistor)
MMX32_, MMX34_, MMX35_
L1 L2/N L3
PE L1 L2 L3
Input Output
U/T1 V/T2 W/T3
U1 V1 W1
Ground Connection The ground connection is connected directly with the cable
clamp plates.
PZ2
The shielded cables between the frequency inverter and the
motor should be as short as possible. Connect the shielding
on both ends and over a large surface area with protective
ground PES (Protective Earth Shielding). You can connect the
shielding of the motor cable directly to the cable clamp plate
PE
M4
(360 degrees coverage) with the protective ground.
11.5 lb-in
(1.3 Nm)
The frequency inverter must always be connected to the
ground potential via a grounding cable (PE).
0.17 in
(4.3 mm)
3 ~
Motor