A4 Series AC Servo Driver

Product Overview

Compared to the B2 series servo, the A4 series AC servo driver adds many powerful functions on the original features. The servo system mainly consists of three parts: controller, power drive device, feedback device, and motor. The controller adjusts the control quantity based on the difference between the set value given by the CNC system and the actual operating value detected by the feedback device; the power drive device serves as the main circuit of the system, compatible with 40/60/80/90/110/130 flange 2500-line servo motors.

Features

1. Supports ±10V analog voltage control 2. Internally integrates three types of origin search functions 3. Adds a 24V pulse input common terminal and a 24V collector output Z signal; 4. Supports three pulse modes: direction + pulse, CW/CCW, and AB pulse; 5. Supports pulse feedback frequency division function; 6. Supports MODBUS bus control; 7. Equipped with a flip-cover display, with more exquisite workmanship; after program optimization, the servo rigidity is stronger.

Product Overview Supporting Products Data Download

Driver Specifications

Input Power	Control Power	Single-phase 220VAC
Input Power	Main Power	Single-phase/Three-phase 220VAC
Operating Environment	Temperature	0~45 ℃
	Humidity	≤90%RH without condensation
	Altitude	Altitude ≤1000mm
	Installation Environment	No corrosive gases, flammable gases, oil mist, or dust
	Installation Method	Vertical installation
Encoder Feedback		2500p/r (Resolution: 10000), incremental encoder
Control Signals	Digital Inputs	10 general digital inputs, configurable functions
Control Signals	Digital Outputs	6 digital outputs, configurable functions
Pulse Signal	Input	2 high-speed inputs, differential (600K) and single-ended (200K) pulses. Supports pulse input modes: PULS+DIR, A+B, CW+CCW
Pulse Signal	Output	3 high-speed pulse outputs, output signal form: 5V differential signal. 1 Z signal single-ended output
Analog Signals	Input	2 analog inputs, 12-bit resolution, input range -10~+10V. A12 input is fixed and limited
Analog Signals	Output	None
Communication Features		RS485 communication, Modbus protocol. The main controller can control the servo's position/speed/torque via RS485, supporting up to 32 control nodes
Display Panel and Key Operation		5 keys (Mode, Set, Left, Up, Down) and 6 digital tubes
Regenerative Braking Resistor		Built-in 100W, 40Ω braking resistor. External braking resistor required for frequent braking scenarios

Driver Naming Rules

MODBUS Bus Communication

The A4 series servo driver features MODBUS bus communication, allowing controllers with MODBUS functionality to control servo position/speed/torque, supporting up to 32 control nodes, greatly reducing controller costs.

Item	Specification
Communication Protocol	MODBUS RTU
Bus Connection	RJ45 (CN1, CN2)
Baud Rate	9600, 19200, 38400
Number of Nodes	Up to 32 (the last node requires shorting the terminal resistor jumper)

Main Application Areas
Suitable for various motion control automation equipment and instruments, such as engraving machines, robotic arms, cutting machines, inkjet machines, ultrasonic equipment, feeding equipment, printing equipment, medical devices, packaging equipment, lithium battery equipment, CNC lathes, spraying equipment, non-standard equipment, etc.