Always follow the specified installation method, Perform noise reduction and grounding properly, Use a fast-response type ground-fault interrupter – Yaskawa Large Capacity Sigma II Series User Manual
Page 30
2.1 Precautions
2-3
2
Always follow the specified installation method.
When installing SERVOPACKs side by side as
shown in the figure on the right, allow at least 10
mm (0.39 in) between and at least 50 mm (1.97 in)
above and below each SERVOPACK. The SERVO-
PACK generates heat. Install the SERVOPACK so
that it can radiate heat freely. Note also that the
SERVOPACK must be in an environment free from
condensation, vibration and shock.
Perform noise reduction and grounding properly.
If the signal line is noisy, vibration or malfunction will result.
• Separate high-voltage cables from low-voltage
cables.
• Use cables as short as possible.
• Perform the grounding with the ground resis-
tance of 100
Ω or less for the servomotor and
SERVOPACK.
• Never use a line filter for the power supply in
the motor circuit.
Conduct a voltage resistance test under the following conditions.
• Voltage: 1500 Vrms AC, one minute
• Current limit: 100 mA
• Frequency: 50/60 Hz
• Voltage application points: Between 480 V, 460 V, 440 V, 400 V, 380 V, 0 V terminals,
L1/R, L2/S, L3/T terminals, and frame ground (connect terminals securely).
Contact your Yaskawa representative before applying voltage to points not specified above,
e.g., when performing standards certification tests.
Use a fast-response type ground-fault interrupter.
For a ground-fault interrupter, always use a
fast-response type or one designed for PWM
inverters. Do not use a time-delay type.
Ambient temperature: 0 to
55
°C
10 mm
or more
Provide sufficient clearance
50 mm
or more
+2
-
+1
L1/R
L2/S
L3/T
U
V
W
480
V
460
V
DU
400
V
0
V
440
V
DW
DV
B1
380
V
DC
24N
B2
DC
24P
CHARGE
+2
-
+1
L1/R
L2/S
L3/T
U
V
W
480
V
460
V
DU
400
V
0
V
440
V
DW
DV
B1
380
V
DC
24N
B2
DC
24P
CHARGE
S
-
H
D
G
T
DATA/
SE
E
MOD /
K
SERVOPAC
A
YASKAW
R
O
P
E
R
A
T
O
CN3
8
CN
POW
ER
CN5
WARNING
5
!
electric shock.
Disconnect all power
May cause
before servicing.
and wait 5 min.
grounding techniques.
Use proper
+2
-
+1
L1/R
L2/S
L3/T
U
V
W
480
V
460
V
DU
400
V
0
V
440
V
DW
DV
B1
380
V
DC
24N
B2
DC
24P
CHARGE
S
-
H
D
G
T
DATA/
SE
E
MOD /
K
SERVOPAC
A
YASKAW
R
O
P
E
R
A
T
O
CN3
8
CN
POW
ER
CN5
WARNING
5
!
electric shock.
Disconnect all power
May cause
before servicing.
and wait 5 min.
grounding techniques.
Use proper
Casing
SERVOPACK
Single
line
Servomotor
Ground
(with resistance
of 100
Ω or less)
M
Ground-fault interrupter
Fast-response
type
For PWM
inverter
Time-delay
type
GOOD
POOR
GOOD