5
3. Power Connection and Grounding:
(1).
Connection method of power supply cable:
(2).
When the configuration of the power supply system is three-phase, four-wire 380V,
the connection method in order to supply single-phase 220 V to the product is as
follows.
(3).When wishing to use three-phase 220V voltage for single-phase 220 V servo motor,
care must be taken regarding the load balance in the configuration:
When connecting a considerable number of sewing machines in the configuration,
the balance of the R, S, and T phases among the three phases should be
considered as shown in the following figure:
The green/ yellow wire is the ground wire. System grounding works must be done properly.
Please contact qualified electrical engineering personnel to perform the works.
Caution:
If the system configuration does not have a
【
neutral (point) line
】
, the single-phase 220V servo motor
is not suitable for use in this place. Please reorder the three-phase 380V servo motor model from
the original supplier.
Single Phase
Connection
Brown wire
Blue wire
Green/Yellow wire
R
S
T
N
PE
Grounding system
G G G
1
ψ
220V
Motor
1
ψ
220V
Motor
1
ψ
220V
Motor
L1 L1 L1
L2
L2
L2
Neutral (point) line
Caution: Configuration of neutral (point) line is necessary
380 V
380 V
220 V
220 V
220 V
380 V
