EURA SD20-G Series, Manual

Page: 51 / 353

SD20-G Series
51
4.1 Main circuit wiring
4.1.1 Main circuit terminals
(1) Main circuit terminals of 220V servo drive
Terminal
identification Terminal
description
Functions
L1/R
，
L2/S
，
L3/T Main circuit terminal
Used to connect three-phase AC 220V power.
L1 and L3 are used to connect to single-phase 220V power.
L1C
，
L2C Control circuit terminal
Used to connect to two phases of three-phase power or
single-phase power.
B1/P
，
B2/B
，
B3
B2
,
B3
:
internal
braking resistor
terminal
Normally short-connect B2 and B3. Built-in braking
resistor is installed.
(M1 structure servo drive doesn’t have buit-in braking
resistor.)
B1/P
，
B2/B
：
external
braking resistor
terminal
Normally not connected.
Remove the wire between B2 and B3 and connect an
external braking resistor between B1 and B2 if the internal
resistor is insufficient.
N+
，
N- DC choke terminal
Normally short-connect N+ and N-. If a countermeasure
against power supply harmonic is needed connect a DC
choke between N+ and N- terminals.
U
，
V
，
W Servo motor output Used to connect to servo motor.
，
Ground terminal Used to connect to the grounding.
(2)Main circuit terminals of 380V servo drive
Terminal
identification
Terminal description Functions
R/L1
，
S/L2
，
T/L3 Main circuit terminal Used to connect three-phase AC 380V power.
L1C
，
L2C Forbidden being connected Invalid
B1/P
，
B2/B
，
B3
B2
，
B3
：
internal braking
resistor terminal
Normally short B2 and B3. Internal braking resistor
is used.
(MM4 and above MM4 structure servo drive
doesn’t have buit-in braking resistor.)
B1/P
，
B2/B
：
external
braking resistor terminal
Normally not connected.
Remove the wire between B2 and B3 and connect an
external braking resistor between B1 and B2 if the
internal resistor is insufficient.
N+, N-, - DC bus Forbidden being connected to Grounding
U
，
V
，
W Servo motor output Used to connect to servo motor.
，
Ground terminal Used to connect to the grounding.