4 System Design
4-28
G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
z Terminal Block Specifications, Left Terminal Block (TB1)
Precautions for Correct UsePrecautions for Correct Use
• Do not connect any External Regeneration Resistors between B1 and NC.
z Terminal Block Specifications, Right Terminal Block (TB2)
R88D-KN75F-ECT
Symbol Name Function
L1 Main circuit power supply
input
R88D-KNF-ECT (7.5 kW):
3-phase 380 to 480 VAC (323 to 528 VAC) 50/60 Hz
L2
L3
B1 External Regeneration
Resistor connection
terminals
Connect an External Regeneration Resistor between B1 and B2.
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/
Ye l l o w
Symbol Name Function
24 V Control circuit power
supply input
24 VDC ±15%
0 V
DB1 Dynamic Brake Resistor
control terminals
These terminals are used to control the MC for externally connected
dynamic brake resistance. The output contact specifications are 1 A max.
at 300 VAC/100 VDC max.
Connect them if required.
DB2
DB3 Normally DB3 and DB4 are shorted.
When using an externally connected Dynamic Brake Resistor, remove the
short bar from between DB3 and DB4.
DB4
Frame ground This is the ground terminal. Ground to 10 Ω or less.
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