Three-Phase Input Connection; Connection To Power Section; Ground Connection - Eaton M-Max Series User Manual

Connection to Power Section

The following figure shows the general connections for the
frequency inverter in the power section.

Three-Phase Input Connection

L 1 L 2 /N
L 3
U /T 1 V /T 2W
PE
M
3 ~
3 AC, PE
Connection to Power Section
MMX11_
Input
L2/N L3
PE L1 N

Ground Connection

PZ2
PE M4
11.5 lb-in
(1.3 Nm)
/T 3
PES
MMX12_
Input
L1 L2/N
PE L1 N
0.17 in
(4.3 mm)
M-Max Series Adjustable Frequency Drive MN04020003E—October 2013 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_
Input
L1 L2/N L3 U/T1
U1
PE L1 L2 L3
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).
Installation
Output
V/T2 W/T3
V1
W1
3 ~
Motor
33