Installation
M-Max Series Adjustable Frequency Drive MN04020003E—October 2013 www.eaton.com 33
Connection to Power Section
The following figure shows the general connections for the
frequency inverter in the power section.
Three-Phase Input Connection
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)
Connection to Power Section
Ground Connection The ground connection is connected directly with the cable
clamp plates.
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
(360 degrees coverage) with the protective ground.
The frequency inverter must always be connected to the
ground potential via a grounding cable (PE).
L1 L2/N L3
U/T1
V/T2
W/T3
M
3 ~
3 AC, PE
PES
PE
L3
PE L1 N
L2/N
MMX11_
Input
L1
PE L1 N
L2/N
MMX12_
Input
L1 L3
PE L1 L2 L3
L2/N
MMX32_, MMX34_, MMX35_
U/T1
W/T3
V/T2
U1
V1
W1
3 ~
Input Output
Motor
PZ2
M4
11.5 lb-in
(1.3 Nm)
PE
0.17 in
(4.3 mm)
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