3.1 Main Circuit Wiring
3-13
3
Wirin
g and
Co
nnectio
n
(1) Power Supply Capacities and Power Losses
The following tables show the power supply capacities and power losses of the multi-winding drive unit,
SERVOPACKs, and converters.
The values are for two pairs of a SERVOPACK and converter.
Multi-Winding Drive Unit
SERVOPACKs and Converters
∗
This is the value for the JUSP-RA14-E regenerative resistor unit.
(2) How to Select Molded-case Circuit Breaker and Fuse Capacities
The following tables show the current capacities and inrush current of the multi-winding drive unit, SERVO-
PACKs, and converters.
Use these values as a basis for selecting the molded-case circuit breaker and fuse. The values are for two pairs
of a SERVOPACK and converter.
Multi-winding Drive Unit
SERVOPACKs and Converters
∗
Input voltage of 24 VDC
Note 1. The rated input current of the SERVOPACK is the nominal value at the rated load.
Select the appropriate capacity in accordance with the specified derating.
Cutoff characteristics (25
°
C): 300% five seconds min.
2. To comply with the low voltage directive, connect a fuse to the input side. Select the fuse or molded-case circuit
breaker for the input side from among models that are compliant with UL standards.
The table above also provides the nominal values of current capacity and inrush current. Select a fuse and a
molded-case circuit breaker which meet the cutoff characteristics shown below.
• Main circuit, control circuit: No breaking at three-times the current values of the table for 5 s.
• Inrush current: No breaking at the same current values of the table for 20 ms.
Control Power Supply
Model JUSP-
Control Circuit Power Loss [W]
24 VDC
MD
D
14.4
Main
Circuit
Power
Supply
Maximum
Applicable
Servomotor
Capacity
[kW]
Combination of
SERVOPACK and
Converter
Power Supply
Capacity for
Two SERVO-
PACK-
Converter
Sets [kVA]
Output
Current
[Arms]
Main
Circuit
Power
Loss
[W]
Regenerative
Resistor
Power Loss
[W]
Control
Circuit
Power
Loss
[W]
Total
Power
Loss
[W]
SERVO-
PACK
Converter
Model:
SGDV-
Model:
SGDV-COA
Three-
phase
400 V
75
101J
5EDA
128
196
2480
(1920)
*
192
2672
Control Power Supply
Model JUSP-
Current Capacity Control Circuit [Arms]
24 VDC
MD
D
0.6
Main
Circuit
Power
Supply
Maximum
Applicable
Servomo-
tor Capac-
ity
[kW]
Combination of
SERVOPACK and
Converter
Power
Supply
Capacity for
Two SERVO-
PACK-
Converter
Sets [kVA]
Current Capacity
Inrush Current
Rated voltage
SERVOPACK
Converter
Main
Circuit
[Arms]
Control
Circuit
[Arms]
Main
Circuit
[A0-p]
Control
Circuit
[A0-p]
Fuse
[V]
Circuit
Breaker
[V]
Model: SGDV-
Model:
SGDV-
COA
Three-
phase
400 V
75
101J
5EDA
128
128
8
*
340
–
600
480