Sigma II User’s Manual Chapter 8: Ratings and Characteristics
8 - 38
Servo Amplifier Ratings and Specifications Table 1 (continued)
*1
Speed regulation is defined as follows:
The motor speed may change due to voltage variations or amplifier drift and changes in processing
resistance due to temperature variation. The ratio of speed changes to the rated speed represents
speed regulation due to voltage and temperature variations.
*2
Forward is clockwise viewed from the non-load side of the servomotor, (counterclockwise viewed
from the load and shaft end).
*3
The built-in open collector power supply is not electrically isolated from the control circuit in the
servo amplifier.
Servo Amplifier Model
SGDH-
A3 A5 01 02 04 05 08 10 15 20 30
Speed and Torque Control Modes
Performance
Speed Control Range
1:5000 (The lowest speed of the speed control range is the point just before
the motor stops under full-load condition.)
Speed
Regulation
*1
Load Regulation 0 to 100% load: 0.01% maximum (at rated speed)
Voltage Regulation Rated Voltage ±10%: 0% (at rated speed)
Temperature Regulation 25 ± 25°C: ±0.1% max. (at rated speed)
Frequency Characteristics
400Hz (at J
L =
J
M
)
Torque Control Tolerance
(Repeatability)
±2%
Soft Start Time Setting 0 to 10s (Can be set individually for acceleration and deceleration)
Input Signals
Speed
Reference
Input
Reference Voltage
*2
±6V
DC
(Variable setting range: ±2 to ±10V
DC
) at rated torque (positive
torque reference with positive reference), input voltage: ±12V (maximum).
Input Impedance About 14kΩ
Circuit Time Constant —
Torque
Reference
Input
Reference Voltage
*2
±3V
DC
(Variable setting range: ±1 to ±10V
DC
) at rated torque (positive
torque reference with positive reference), input voltage: ±12V (maximum)
Input Impedance About 14kΩ
Circuit Time Constant About 47µs
Contact
Speed
Reference
Rotation Direction
Selection
With P control signal (/P-CON)
Speed Selection
With forward/reverse current limit signal (speed 1 to 3 selection),
servomotor stops or another control method is used when both are OFF.
Position Control Mode
Performance
Bias Setting 0 to 450rpm (setting resolution: 1rpm)
Feed Forward Compensation 0 to 100% (setting resolution: 1%)
Positioning Completed Width
Setting
0 to 250 reference units (setting resolution: 1 reference unit)
Input Signals
Reference Pulse
Type
Sign + pulse train, 90° phase difference 2-phase pulse (A phase + B
phase), or CCW + CW pulse train
Form Line driver (+5V level), open collector (+5V or +12V level)
Frequency 500/200kpps maximum (line driver/open collector).
Control Signal Clear Signal (input pulse form identical to reference pulse)
Built-in Open-Collector Power
Supply
*3
+12V (1kΩ built-in resistor)
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