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2 Design
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Multi-function Compact Inverter 3G3MX2-V1 User’s Manual (I585-E1)
• When using the Regenerative Braking Unit (Model: 3G3AX-RBU21/RBU22/RBU41) with a
built-in braking resistor with the Braking Resistor (Model: 3G3AX-RBA/RBB/RBC), remove
the built-in resistor according to the “Regenerative Braking Unit 3G3AX-RBU
User’s
Manual (I563)”. Using the Regenerative Braking Unit with the built-in resistor connected may
cause damage to the built-in resistor.
• Wiring diagram for connecting one Regenerative Braking Unit (Model: 3G3AX-RBU23)
*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 as shown below. Be
sure to perform wiring for these terminals.
• To remove the built-in resistor from the Regenerative Braking Unit Built-in Braking Resistor
(Model: 3G3AX-RBU21/RBU22/RBU41) in order to use the Braking Resistor (Model:
3G3AX-RBA/RBB/RBC), remove the wiring of thermal relay for the built-in resistor and con-
nect the alarm contact (thermal relay output) terminals of the braking resistor with the termi-
nals R1 and R2.
If the built-in resistor or its thermal relay is left connected, the built-in resistor may be over-
heated, or the alarm contact may not operate.
Model
Alarm contact terminals
3G3AX-RBA
/RBB
Between terminal 1 and terminal 2
3G3AX-RBC
Between terminal AL1 and terminal AL2
P
P
N
SL1 SL2 AL1 AL2
RB
MA1 MA2
ON
OFF
RY
RY
MC1
R/L1
S/L2
T/L3
U/T1
V/T2
W/T3
P/
+
2
N/
−
1(AL1)
2(AL2)
P
RB
MC1
MC2
MC2
MC1
MCCB
MC2
R
S
T
Inverter
Fuse
Motor
3-phase 200 V
3G3AX-RBA
/RBB/RBC
Regenerative braking unit
3G3AX-RBU23
Master
*2
*1
AL1
AL2
R1
R2
P
RB
1(AL1)
2(AL2)
P
RB
Regenerative braking unit with a built-in braking resistor
(Model: 3G3AX-RBU21/RBU22/RBU41)
External braking resistor
(Model: 3G3AX-RBA/RBB/RBC)
Remove the built-in resistor.
Resistor
Resistor
Summary of Contents for SYSDRIVE MX2 SERIES
Page 1: ...Multi function Compact Inverter MX2 Series Type V1 User s Manual I585 E1 01 3G3MX2 A V1 ...
Page 32: ...CONTENTS 29 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 108: ...2 Design 2 48 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 176: ...4 Parameter List 4 42 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 538: ...10 Troubleshooting 10 22 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 598: ...12 Options 12 50 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 614: ...Appendices A 16 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 615: ...I 1 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 I Index ...