Yaskawa MP940 Reference Manual - Manual (Page 176)

Servo Amplifier Main Circuit Connection MotionSuite™ MP940 Machine Controller Reference Manual
5-34
Servo Amplifier Main Circuit Connection
Main Circuit Terminal Names and Functions
The names and functions of the main circuit terminals are shown in the table
below:
*1 There is no terminal B3.
*2 This connection terminal does not exist on servo amplifiers of 6kW capacity or higher.
*3 Servo amplifiers of 6kW or higher capacity have only the servo amplifier terminals.
Terminal Mark Name Function
L1, L2 or L1,
L2 , L3 Main Circuit Power
Input Terminal 30W ~ 200W Single-phase 100 ~115V +10%, -15% (50/60Hz)
30W ~ 400W
Single-phase 200 ~ 230V +10%, -15% (50/60Hz)
0.5kW ~ 7.5kW
Three-phase 200 ~ 230V +10%, -15% (50/60Hz)
U, V, W Motor Connection
Terminal Connects with motor.
L1C, L2C Control Power
Input Terminal 30W ~ 200W Single-phase 100 ~ 115V +10%, -15% (50/60Hz)
30W ~ 7.5kW
Single-phase 200 ~ 230V +10%, -15% (50/60Hz)
(2 places)
Ground Terminal Installed by connecting to either the power grounding terminal or the
motor grounding terminal.
B1, B2, or
B1, B2, B3 External Regen
Resistor
Connection
Terminal 30W ~ 40W This is not normally connected.
Connect an external regen resistor (provided by
customer) between B1-B2 if the regen capacity is
insufficient.*1
0.5kW ~ 5.0kW Normally, B2-B3 is shorted (using an internal
regen resistor). When the capacity of the internal
regen resistor is insufficient, open B2-B3 (remove
the wiring), and connect an external regen resistor
(provided by customer) between B1 - B2.
6.0kW, 7.5kW Connect an external regen resistor (provided by
customer) between B1-B2.*1
1 , 2
High Power
Frequency Sup-
pression DC Reac-
tor Connection
Terminal
1 - 2 are normally shorted.
When a countermeasure for high power frequency suppression is
needed, connect a DC reactor between 1 - 2. ∗2
Main Circuit
Positive Terminal This is not normally connected.*3
Main Circuit
Negative Terminal This is not normally connected.