SGDF Sigma Mini



Basic Specifications Power Supply 24VDC ± 10%
Control Method MOSFET-PWM
Feedback Incremental Encoder 2048PPR
Location Ambient Temperature 0 to 50°C1
Storage Temperature -20 to +85°C
Ambient/Storage Humidity 90% or less (with no condensation)
Vibration/Shock Resistance 1G/15G
Structure Base-mounted
Speed/Torque Control)
Speed Control Range2 1 : 5000
Load Regulation 0% to 100%: 0.01% maximum (at rated speed)
Voltage Regulation 0%
Temperature Regulation 25 ± 25°C : 0.1% maximum (at rated speed)
Frequency Characteristics 250Hz (at JL = JM)
Torque Control (Repeatability) ± 2.0%
Accel/Decel Time Setting 0 to 10s
Input Signal
(Speed/Torque Control)
Rated Reference Voltage ±6VDC (forward motor rotation with positive reference) at rated speed (default setting)
(variable setting range: ±2 to ±10VDC) at rated speed
Input Impedance Approx. 30 kW
Circuit Time Constant Approx. 47 ms
Torque Reference Rated Reference Voltage ±3VDC (forward motor rotation with positive reference) at rated torque (default setting)
Variable setting range: ±1 to ±10VDC at rated torque
Input Impedance Approx. 30 kW
Circuit Time Constant Approx. 47 ms
(Position Control)
Bias Setting 0 to 450rpm (Setting resolution: 1 rpm)
Feed Forward Compensation 0 to 100% (Setting resolution: 1%)
Position Complete Width Setting 0 to 250 reference units.
Reference unit: Minimum unit of position data which moves load
Input Signal
(Position Control)
Reference Pulse Type SIGN + PULSE train, 90° phase difference, 2-phase pulse (A-phase + B-phase), CCW pulse + CW pulse
Pulse Form Line Driver (+5V level), open collector (+5V or +12V level)
Pulse Frequency 0 to 450 kpps
Control Signal   CLEAR (input pulse form identical to reference pulse)
I/O Signals Position Output Output Form A-, B-, C-phase open collector output
Frequency Dividing Ratio No. where N= 2048 (the number of encoder pulses) Set the value of No. using a parameter.
Sequence Input
(2 Outputs)
Servo ON, P drive (or motor forward/reverse by zero-clamp drive reference, or contact input speed control), current limit, alarm reset. Select using parameters.
Sequence Output (2 Outputs) Current limit detection (or TGON), speed coincidence, external brake interlock, servo alarm)
Protective Functions Overcurrent, overland, overspeed, overrun prevention, CPU error, encoder error, overflow
Indicators Red: Alarm; Green: Ready
Others Zero clamp operation (position loop stop), soft start/stop, speed coincidence, brake interlock signal output, JOG run, auto-tuning
Combined Specifications Motor Rated/Max. Motor Speed 3000/5000rpm
Applicable Encoder Incremental encoder 2048PPR

1 The ambient temperature must be within the specified range. Even if the servo amplifier is installed in a box, the temperature inside the box must not exceed the range.

2 The lowest speed of the speed control range is the point just before the motor stops under full-load condition.

3 Speed regulation can be calculated using the following formula:

  • Speed Regulation = (no-load motor speed - full load motor speed) / rated motor speed x 100%

    Under actual operating conditions, voltage or temperature fluctuation causes drift to the amplifier or changes the operating resistance, resulting in the motor speed being changed. The percentage of the motor speed change to the rated motor speed is called "speed regulation."