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Sigma II User's Manual
5.8.5
400V Power Supply Voltage
• Do not connect the servo amplifier directly to any level other than 400V.
Doing so will destroy the servo amplifier.
There are three types of SGDH servo amplifiers, for the power supply voltages: sin-
gle-phase 100V
400V
power supply, prepare the following voltage conversion transformers (sin-
ac
gle-phase or three-phase).
Refer to the capacities shown in the following table when selecting a voltage conver-
sion transformer.
Voltage
Single–phase
100V
Single–phase
200V
Three–phase
200V
*
This is the net value at the rated load.
When using a 400V class power supply, turn the power supply ON and OFF at the
primary side of the voltage conversion transformer.
Note: Transformer inductance will cause a surge voltage if the power is turned ON and OFF at the second-
ary, damaging the servo amplifier.
CAUTION
!
, three-phase 200V
ac
Primary Voltage
400V
or 440V
ac
400V
or 440V
ac
Servo Amplifier
Model
SGDH–A3BE
SGDH–A5BE
SGDH–01BE
SGDH–02BE
SGDH–A3AE
SGDH–A5AE
SGDH–01AE
SGDH–02AE
SGDH–04AE
SGDH–05AE
SGDH–08AE
SGDH–10AE
SGDH–15AE
SGDH–20AE
SGDH–30AE
Chapter 5: Parameter Settings and Functions
, and single-phase 200V
ac
Secondary Voltage
200V
ac
100V
ac
Voltage capacity per
Servo Amplifier
0.15
0.25
0.40
0.60
0.20
0.25
0.40
0.75
1.2
1.4
1.9
2.3
3.2
4.3
5.9
5-112
. For the three-phase
ac
*
kVA
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