Omron 3G3MX2-A2002-EV2 - Page 113

2 Design
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Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)
• When using the external Regenerative Braking Unit, remove the built-in resistor. Using the
Regenerative Braking Unit with the built-in resistor connected may cause damage to the
built-in resistor.
• Wiring diagram for connecting one Braking Unit.
MC1 MC2
ON
OFF
RY
*1
RY
MC1
MC2
MCCB
R
S
T
Fuse
MC1
MC2
*2
Inverter
Motor
3-phase 200 V
Regenerative br
*1. For RY, select the contact rating according to the ratings of the coils MC1 and MC2.
*2. MC1 and MC2 are used to provide redundancy.
Precautions for Correct Use
• Each braking resistor has alarm contact (thermal relay output) terminals. Be sure to perform
wiring for these terminals so that alarm in the system is generated when overtemperature is
detected.
Braking Unit
Master
P
AL1 AL2
RB
P
N
R/L1 U/T1
S/L2 V/T2
T/L3 W/T3
P/+
N/−
2
2-3 Wiring
1(AL1)
RB
2(AL2)
P
2-3-4 Wiring for Main Circuit Terminals