Sigma II User’s Manual Chapter 8: Ratings and Characteristics
8 - 43
SGDH Amplifier Ratings and Specifications
*1
Supply voltage must not exceed 480V + 10% (528V). A stepdown transformer is required if the
voltage exceeds this limit.
*2
Use the servo amplifier within the ambient temperature range. When enclosed, the temperatures
inside the cabinet must not exceed the specified range.
*3
Speed regulation is defined as follows:
Servo Amplifier Model SDGH-
2B 3Z 3G 4E 5E
Basic Specifications
Input Power Supply
Main Circuit
*1
Three-phase 380 to 480V
ac
+10% to -15%, 50/60Hz
Control Circuit
24V
DC
±10%
Note:
Power supply for DB contactor is made from DC24V
power supply. In case the DB operation is
necessary when power interruption occurs,
maintain the DC24V while the DB operates.
If 5 times inertia is attached and standard DB
resistor is used, DB operation time is about 2 to 5
seconds
40 Watt
Control Mode
Three-phase, full-wave rectification IGBT PWM (sine-wave driven)
Feedback
Incremental encoder, absolute encoder
Location
Ambient/Storage Temperature
*2
0 to 55°C / -20 to 85°C
Ambient/Storage Humidity
90% Relative Humidity or less (no-condensing)
Vibration/Shock Resistance
9.8m/s
2
(1G) / 49m/s
2
(5G)
Cyclic shock resistance is 29.4m/s
2
(3G)
Structure
Base mounted
Speed/Torque Control Mode
Performance
Speed Control Range
1 : 5000
Speed
Regulation
*3
Load Regulation
0% to 100%: 0.01% maximum (at rated speed)
Voltage Regulation
Rated voltage ±10%: 0% (at rated speed)
Temperature
Regulation
25 ± 25°C: 0.1% maximum (at rated speed)
Frequency Characteristics
100Hz (at J
L
= J
M
)
Accel/Decel Time Setting
0 to 10s
Input Signal
Speed
Reference
Reference Voltage
*4
±6V
DC
(variable setting range: ±2 to ±10V
DC
) at rated speed (forward
rotation with positive reference)
Input Impedance
Approximately 30kΩ
Circuit Time Constant
—
Torque
Reference
Reference Voltage
****
±1 to ±10V at rated speed (forward rotation with positive reference)
Input Impedance
Approximately 14kΩ
Circuit Time Constant
Approximately 47μs
Contact Speed
Reference
Rotation Direction Selec-
tion
Uses P control signal
Speed Selection
Forward/reverse rotation current control signals are used (1st to 3rd speed
selection). When both signals are OFF, the motor stops or enters another
control mode.
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