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4-16
4-2 Wiring
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
4
System Design
Control Circuit Connector Specifications (CNC)
External Regeneration Resistor Connector Specifications (CND)
R88D-KT30F/-KT50F
Terminal Block Specifications (TB1)
Symbol
Name
Function
24 V
Control circuit power
supply input
24 VDC (21.6 to 26.4 V)
0 V
Symbol
Name
Function
B1
External Regeneration
Resistor connection
terminals
Normally B2 and B3 are short-circuited.
If there is high regenerative energy, remove the short-circuit bar
between B2 and B3 and connect an External Regeneration
Resistor between B1 and B2.
When using N terminal, make sure not to exceed the fuse's rated
voltage (660 VDC, 20 A).
B2
B3
N
Symbol
Name
Function
L1
Main circuit power supply
input
R88D-KTxF (3 to 5 kW): 3-phase 380 to 480 VAC (323 to 528 V)
50/60 Hz
L2
L3
B1
External Regeneration
Resistor connection
terminals
A Regeneration Resistor is not built in.
Connect an External Regeneration Resistor between B1 and B2, if
necessary.
B2
U
Motor connection
terminals
Red
These are the output terminals to the Servomotor.
Be sure to wire them correctly.
V
White
W
Blue
Green/
Yellow
Frame ground
This is the ground terminal. Ground to 100
Ω
or less.
NC
−
Do not connect.
24 V
Control circuit power
supply input
R88D-KTxF: 24 VDC (21.6 to 26.4 V)
0 V
Frame ground
This is the ground terminal. Ground to 100
Ω
or less.
NC
−
Do not connect.