The WSD-H3 Series High Performance Servo (Pulse Type) provides a cost-effective and reliable solution for applications using traditional pulse and direction control. Covering 50 W to 7.5 kW, it supports single-phase and three-phase AC inputs (220 V / 380 V), making integration simple across a wide range of machines.
Designed for stable and accurate motion control, the Pulse Type delivers strong peak current output for smooth acceleration and consistent torque performance. Built-in brake resistors are available on selected models to enhance braking efficiency. This servo drive is well suited for standard automation equipment, conveyors, positioning systems, and packaging machines.
Technical Specification
| Item | Contents | |
|---|---|---|
| Control mode | Position control,speed control,torque control,etc. | |
| Pulse instruction | Direction + pulse/Forward and reverse pulse/Orthogonal pulse | |
| Control signal | Input | Universal 7 input, the function of the universal input can be selected by parameters |
| Output | General 5 output. The function of the general output can be selected by parameters | |
| Pulse signal | Input | 4Mpps (differential pulse input), 200kpps (collector open circuit input) |
| Output | Encoder pulse output(A/B/Z phase) | |
| Analog signal | Input | 1 channel input，-10V~+10V |
| Communication | RS485 | Support MODBUS communication protocol |
Interface Definition CN1-Pulse Type Upper Computer
| Item | Symbol | Pin code | Content |
|---|---|---|---|
| Control power supply signal | COM+ | 11 | Connect the positive terminal of an external DC power supply (12 ~ 24V) |
| Servo On input | SRV-ON | 9 | "ON" :servo On state, motor powered on "OFF" :servo Off state , motor is not powered |
| Bias clearance input | CL | 10 | Eliminate positional deviation |
| Command pulse prohibited input | INH | 34 | Prohibit the input of command pulses |
| Negative drive prohibited input | NOT | 8 | No negative torque when the input is OFF |
| Forward drive prohibited input | POT | 33 | No positive torque when the input is OFF |
| Gain switching | GAIN | 30 | Switch between different gains |
| Alarm clearing input | A-CLR | 12 | Alarm clearing |
| Servo ready output | S-RDY+,S-RDY- | 7,6 | Driver no abnormality ,can be enabled normally |
| Servo alarm output | ALM+,ALM- | 5,4 | The output signal indicating the status of the alarm occurrence |
| Positioning completed output | INP+,INP- | 3,2 | Output the positioning completion signal |
| Brake release output | BRK+,BRK- | 1,26 | Control the action of the motor brake |
| Zero-speed detection output | ZSP+,ZSP- | 28,27 | Output when zero speed is reached |
| GND | GND | 16,19,29 | GND,insulated from COM- |
| Internal 24V power supply | 24V | 17 | Internal 24V power supply, maximum current 0.2A |
| COM | 14 | ||
| Encoder A-phase output | OA+ | 21 | Encoder ABZ signal output (differential) |
| OA- | 22 | ||
| Encoder B-phase output | OB+ | 25 | |
| OB- | 23 | ||
| Encoder Z-phase output | OZ+ | 13 | |
| OZ- | 24 | ||
| Z-phase output | CZ | 44 | The collector of the encoder Z signal is open-circuit output |
| Pulse command input | PULS+ | 41 | The maximum frequency difference allowed is 500k pps, and the collector open circuit is 200k pps |
| PULS- | 43 | ||
| Direction command input | DIR+ | 37 | |
| DIR- | 39 | ||
| High-speed pulse command input | H-PULS+ | 38 | The maximum frequency difference allowed is 4M pps |
| H-PULS- | 36 | ||
| High-speed direction command input | H-DIR+ | 42 | |
| H-DIR- | 40 | ||
| Analog input | AN-IN | 20 | Analog input，-10V~+10V |
| 24V pulse command power supply | P/D 24V | 35 | The power interface when the 24V collector is open-circuit |
| Shielding ground | FG | Housing | Housing shielding wire |
CN2-Encoder
| Item | Symbol | Pin code | Content |
|---|---|---|---|
| Encoder power supply | +5V | 1 | Encoder power supply |
| Encoder power supply ground | GND | 2 | Encoder power supply ground |
| Signal | PS+ | 6 | Serial signal positive |
| PS- | 5 | Serial signal negative | |
| Shielding ground | FG | Housing | Housing shielding ground |
CN3- Pulse 485 Communication
| Item | Symbol | Pin code | Content |
|---|---|---|---|
| Signal grounding | GND | 8 | Signal grounding |
| RS485 | 485+ | 4 | RS485 transceiver |
| 485- | 5 | ||
| Shielding ground | FG | Housing | Housing shielding ground |
Power Interface
| Item | Symbol | Pin code | Content |
|---|---|---|---|
| Control power input | L1C, L2C | - | Single phase AC 220V/380V |
| Power supply input | L1,L2,L3(CDE type) | - | Single/three phase AC 220V Three phase AC 380V |
| Motor power output | U, V, W | - | Connected to the servo motor UVW |
| Busbar voltage | P+，N- | Dc bus voltage. Do not connect wires at will | |
| Regenerative resistor port | RB，BC | - | When using the built-in regeneration resistor, short-circuit RB and BC. When using an external regene-ration resistor, RB and BC are open-circuited, and the external resistor is connected between P+ and BC |
| Shielding ground | - | Shielding grounding treatment |
Application in Different Scenarios
