4-15
4-2 Wiring
OMNUC G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
4
System Design
Control Circuit Connector Specifications (CNC)
External Regeneration Resistor Connector Specifications (CND)
R88D-KN30F-ECT-R/-KN50F-ECT-R
Terminal Block Specifications (TB1)
Terminal Block Specifications (TB2)
Sym-
bol
Name Function
24 V Control circuit power
supply input
24 VDC (21.6 to 26.4 V)
0 V
Sym-
bol
Name Function
B1 External Regeneration
Resistor connection
terminals
Normally B2 and B3 are shorted. Do not short B1 and B2. Doing
so may result in malfunctioning. If there is high regenerative
energy, remove the short bar between B2 and B3 and connect an
External Regeneration Resistor between B1 and B2.
B3
B2
NC Do not connect.
Sym-
bol
Name Function
24 V Control circuit power
supply input
24 VDC (21.6 to 26.4 V)
0 V
Symbol Name Function
L1 Main circuit power supply
input
R88D-KN@F-ECT-R (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
Normally B2 and B3 are shorted. Do not short B1 and B2. Doing
so may result in malfunctioning. If there is high regenerative
energy, remove the short bar between B2 and B3 and connect an
External Regeneration Resistor between B1 and B2.
B3
B2
NC
Do not connect.
U Motor connection
terminals
Red These are the output terminals to the Servomotor.
Be sure to wire them correctly.
VWhite
WBlue
Green/
Yellow
Frame ground This is the ground terminal. Ground to 100 Ω or less.
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