• Manufacturer: NSK Ltd.
• Product Type: Megatorque Servo Drive Unit
• Model: ESA-LYB3BF1-21.1
• System: ESA Series Direct Drive Servo System
• Standards: UL508C, EN50178, CE (LVD/EMC)

• Parameter Category	Parameter Name	ESA-LYB3BF1-21.1 Specification
  Power Input	Main Power Supply	Single-phase 200–230 VAC, ±10%, 50/60 Hz
  	Control Power Supply	Single-phase 200–230 VAC, ±10%
  	Power Capacity (Rated)	1.1 kVA
  	Power Capacity (Max)	5.1 kVA
  Output	Rated Output Current	4.5 Arms
  	Max Output Current	14.9 Arms
  	Output Type	Servo motor drive (direct drive compatible)
  Control & Feedback	Position Sensor Resolution	Up to 1,310,720 count/rev (quadrupled: 5,242,880 count/rev)
  	Max Pulse Input Frequency	1 MHz (photo coupler input)
  	Input Signal Format	CW/CCW, Pulse+Direction, ΦA/ΦB
  	Feedback Signal	ΦA/ΦB/ΦZ line driver
  	Control Modes	Position, Velocity, Torque; Program operation (256 channels), Jog, Home return
  I/O Specifications	Control Inputs	17 ports, 24 VDC, photo coupler isolated
  	Control Outputs	7 ports, 24 VDC/50 mA max switching capacity
  	Communication	RS-232C (9600 bps); CC-Link Ver.1.10 (optional)
  	Analog Monitor	2 channels (free range/offset setting)
  Environmental	Operating Temperature	0–50 °C
  	Storage Temperature	-20–70 °C
  	Humidity	≤90% RH (non-condensing)
  	Vibration Resistance	4.9 m/s²
  	Protection Level	IP20 (enclosure)
  Mechanical	Weight	Approx. 1.8 kg (standard); 2.0 kg (CC-Link compatible)
  	Connectors	CN1 (RS-232C, D-sub 9-pin); CN2 (I/O, 50-pin); CN3 (Resolver); CN4 (Motor); CN5 (I/O); CN6 (Power)
  Functions	Regeneration	Built-in resistor; external dump resistor optional
  	Dynamic Brake	Power-off/servo-off/warning activation
  	Self-Diagnosis	Overheat, overcurrent, overvoltage, position error, etc.
  	Data Backup	EEPROM (100,000 write cycles)

1  .Our company specializes in automation industrial control accessories. We have more than 100,000 products.  
 Including : frequency converter, servo driver, servo motor,   data acquisition card, industrial camera, touch screen, circuit board, DCS module, soft starter, industrial   computer,encoder... etc
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