Yaskawa Sigma II Series Servo System - Manual (Page 51)

Sigma II User’s Manual Chapter 3: Wiring
3 - 13
3.3.1 Names and Descriptions of Main Circuit Terminal
The following table gives the names and a description of main circuit terminals.
Main Circuit Names and Description
Terminal
Symbol
Name Description
L1, L2 or
L1, L2,
L3
Main circuit AC
input terminal
30W to 200W Single-phase 100 to 115V (+10%, -15%), 50/60Hz
30W to 400W Single-phase 200 to 230V (+10%, -15%), 50/60Hz
500W to 15kW
200V
Three-phase 200 to 230V (+10%, -15%), 50/60Hz
500W to 55kW
400V
Three-phase 380 to 480V (+10%, -15%), 50/60Hz
U, V, W
Servomotor
connection terminal
Connects to the Servomotor.
L1C, L2C
Control power input
terminal
30W to 200W Single-phase 100 to 115V (+10%, -15%), 50/60Hz
30W to 15kW Single-phase 200 to 230V (+10%, -15%), 50/60Hz
24V, 0V 500W to 55kW 24V
DC
(±15%) 400V units only
Ground terminal Connects to the power supply ground terminals and motor ground terminal.
B1, B2
or
B1, B2,
B3
External
regenerative
resistor terminal
30W to 400W
Normally not connected.
Connect an external regenerative resistor (provided by
the user) between B1 and B2 if the regenerative capac-
ity is insufficient.
Note: No B3 terminal.
500W to 5.0kW
Normally short B2 and B3 (for an internal regenerative
resistor).
Remove the wire between B2 and B3 and connect an
external regenerative resistor (provided by customer)
between B1 and B2 if the capacity of the internal
regenerative resistor is insufficient.
B1, B2 — 6.0kW-55.0kW
Connect an external regenerative resistor (provided by
the user) between terminals B1 and B2. See 5.6
Selecting a Regenerative Resistor for details.
⊕1, ⊕2
DC reactor terminal
connection for
power supply
harmonic wave
countermeasure
Normally short ⊕1 and ⊕2.
If a countermeasure against power supply harmonic waves is needed, connect
a DC reactor between ⊕1 and ⊕2.
The amplifier is delivered from the factory with these terminals shorted. See
5.8.6 Reactor for Harmonic Suppression for details.
Main circuit
Negative terminal
Normally not connected.
Main circuit Positive
terminal
Normally not connected.