High-response, full-featured servo control from 100 W to 45 kW
The SD20-G is a fully digital general-purpose servo drive system designed to drive and control permanent magnet synchronous servo motors. Available in seven compact book-style frames (M1–M7), it covers 100 W to 7.5 kW on 220 V class power (single-phase or three-phase) and 1 kW to 45 kW on three-phase 380 V, making it suitable for everything from small precision axes to large industrial machinery.
Performance is anchored by a 1.2 kHz speed-loop frequency response, a 1:10,000 speed control range and ±0.01% speed fluctuation under 0–100% load. The drive supports all six fundamental control modes — position pulse, internal register position, analog speed, internal register speed, analog torque and internal register torque — plus switchable dual-mode combinations, so one drive can serve positioning, velocity and torque applications. Position commands accept differential or open-collector pulses at up to 500 kHz (4 MHz with high-speed differential input).
The SD20-G is built for easy integration and standalone intelligence: RS485 Modbus communication is standard, with optional CANopen and EtherCAT. An embedded PLC function, high-speed counter, electronic cam, gantry synchronization, full closed-loop control, online/offline inertia identification, auto gain adjustment and vibration suppression simplify commissioning, while a complete protection suite and a 5-digit LED keypad with parameter-copy function round out day-to-day operation.
Position pulse, register position, analog speed, register speed, analog torque and register torque — ten dual-mode combinations switchable in real time.
1.2 kHz frequency response, 1:10,000 speed control range, ±0.01% speed fluctuation across 0–100% load.
500 kHz differential / 200 kHz open-collector inputs, up to 4 MHz via high-speed differential; three pulse formats.
Resolver, 2500 ppr incremental, 23-bit incremental, 17/23-bit absolute and 17-bit magnetic encoders; full closed-loop option.
RS485 Modbus standard; optional CANopen or EtherCAT for networked automation.
Embedded programmable logic allows standalone operation without an external controller.
Electronic cam, gantry synchronization, homing search, fixed-length interrupt, zero-speed clamp, S-curve smoothing.
Online/offline inertia identification, automatic gain adjustment, vibration suppression, and a full protection suite with 5-digit LED keypad and parameter copy.
| Power range (220 V) | 0.1 – 7.5 kW (11 models) |
|---|---|
| Power range (380 V) | 1 – 45 kW (14 models) |
| Input supply | 1-phase/3-phase AC 220 V or 3-phase AC 380 V, ±10%, 50/60 Hz |
| Continuous output current | 1.2–35 Arms (220 V class); 3–90 Arms (380 V class) |
| Output frequency | 0–400 Hz |
| Control modes | Position pulse / register position / analog speed / register speed / analog torque / register torque + dual modes |
|---|---|
| Frequency response | 1.2 kHz |
| Speed control range | 1:10,000 |
| Speed fluctuation | ±0.01% (0–100% load) |
| Input pulse frequency | 500 kHz differential, 200 kHz open-collector, 4 MHz high-speed |
| Electronic gear | 0.01 ≤ B/A ≤ 100, two selectable groups |
| Analog command input | DC ±10 V; built-in +24 V / 100 mA control power |
| Encoder support | Resolver, 2500 ppr incremental (8/14-core), 23-bit incremental, 17-bit and 23-bit absolute, 17-bit magnetic |
|---|---|
| Communication | RS485 Modbus (standard); CANopen / EtherCAT (optional) |
| Display / keypad | 5-digit LED display, 4 keys, status LEDs; parameter copy and password functions |
| Protection functions | Overvoltage, undervoltage, overload, overcurrent, overspeed, encoder error, phase loss, regeneration error, overheat |
|---|---|
| Braking | Dynamic or energy-consumption braking, built-in or external resistor (frame dependent) |
| EMC / certification | EMC C3 grade (R3 filter option); CE / UL options |
Not sure which model fits your machine? Contact us with your application details — our team will recommend the right drive, motor and options.
0.1–110 kW
Third-generation bus servo performance with built-in EtherCAT
0.2–1.8 kW
1.2 kHz high-response precision servo in a slim single-board design
2 × 0.2–1.8 kW
One drive, two axes — double the precision in half the space
