Omron EasySpeed 3G3JE, User Manual

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Chapter 2
2-10
Design
2-2-3 Main Circuit Terminal Wiring
■
Main Circuit Terminal Connections
• Use insulated wiring with a rated voltage of 600 V and a temperature rating of 80
°
C min. for main
circuit terminals.
• For terminal connections, use crimp terminals with insulating sleeves.
• When not connecting a Braking Resistor or a Braking Resistor Unit, screw crimp terminals with
insulating sleeves to the Inverter's braking resistance connection terminals.
• Up to two power lines can be connected per terminal.
• If there is a possibility of voltage drops, increase the wire size according to the cable length.
●
Wire Sizes, Terminal Screws, Screw Tightening Torque, and Molded-case Circuit
Breaker (MCCB) Capacities
■
Main Circuit Connection Diagram
■
Wiring the Input Side of the Main Circuit
● Installing Molded-case Circuit Breakers
• Always install molded-case circuit breakers (
MCCBs)
in the power supply wiring to protect against short-cir-
cuit accidents.
• Always connect the power input terminals (R/L1, S/L2, and T/L3) and power supply via an MCCB suitable to
the Inverter.
• Install one MCCB per Inverter.
• Choose an MCCB with the capacity indicated in the previous tables ( Wire Size, Terminal Screw,
Tightening Torque, and Molded-case Circuit Breaker Capacities ).
Model Terminal symbol Terminal
screw
Screw
tightening
torque (N·m)
Wire size
(mm
2
)
Recom-
mended wire
size (mm
2
)
MCCB
capacity
(A)
3G3JE-A2001 R/L1, S/L2, T/L3, B1, B2,
U/T1, V/T2, W/T3 M3.5 0.8 to 1.0 0.75 to 2 2 3 to 5
3G3JE-A2002 R/L1, S/L2, T/L3, B1, B2,
U/T1, V/T2, W/T3 M3.5 0.8 to 1.0 0.75 to 2 2 3 to 5
3G3JE-A2004 R/L1, S/L2, T/L3, B1, B2,
U/T1, V/T2, W/T3 M3.5 0.8 to 1.0 0.75 to 2 2 5
R/L1
S/L2
T/L3
U/T1
V/T2
W/T3
3G3JE
Inverter
M
3~
MCCB
B1 B2
Braking Resistor (option)
Three-phase
200 to 230 V AC