1. Model Definition & Product Overview

• SGDB: Sigma-I generation SERVOPACK series code

• 3Z: Rated 30kW output power, three-phase AC200V high-power base hardware

• AD: Dual command input (pulse position + ±10VDC analog speed/torque control compatible)

• Y: OEM customized hardware including revised built-in regeneration circuit and customized CN1 I/O pin assignment for dedicated injection molding host controller

• 352: Exclusive customized firmware version, developed after Y174/Y278/Y351; factory preset unique parameters for heavy injection molding frequent cyclic start-stop working condition.

2. Electrical Ratings

• Main input power: 3-phase AC200~230V, 50/60Hz; independent separated control power supply terminal design

• Input rated current: 145A, Continuous output rating:30kW; peak output current 175A with 300% short-time overload capability for instantaneous injection heavy load impact

• PWM output: 3-phase AC 0~230V

• Custom internal regenerative circuit via Y352 firmware; regenerative overvoltage threshold specially calibrated for repeated fast deceleration of injection screw; external regenerative resistor is required under full-load continuous cycle production.

3. Control Mode & Interface Definition

1. Pulse position control: Accept open-collector or differential line driver pulse (CW/CCW dual pulse / A/B quadrature pulse), electronic gear ratio pre-set default value locked by OEM firmware

2. Analog speed/torque control: ±10VDC external analog reference input; closed-loop gain & zero offset fixed with exclusive Y352 factory parameter, different from Y174/Y278/Y351

3. MECHATROLINK-I bus PCB reserved onboard, but bus communication function permanently locked by customized firmware and cannot be activated

• CN1: Integrated pulse command, analog signal, digital I/O terminals (Servo Enable, Fault Reset, Position Complete output, dry-contact fault relay output; pin definition unique for Nissei injection machine control wiring)

• CN2: Dedicated encoder port for incremental/absolute encoder connection

• Onboard RS232 serial port: Connect SigmaWin software for parameter backup/download, runtime monitoring and historical fault data record

4. Full Protection Functions

5. Environmental & Mechanical Specification

• Protection grade: IP20, cabinet-only installation with bolt fixing (DIN rail mounting unavailable)

• Cooling: Dual built-in fans forced-air cooling

• Operating ambient: 0℃~+55℃ non-condensing; storage: -20℃~+85℃; relative humidity:10%~90%RH no dew

• Compliance: CE industrial safety certification

6. Commissioning & Replacement Notice

• Support auto inertia identification and auto gain tuning; front panel JOG inching function for standalone motor forward/reverse test without external controller; all fault logs stored in internal memory for troubleshooting

• Standard SGDB-3ZAD or Y174/Y278/Y351 cannot directly replace SGDB-3ZADY352 due to unique Y352 firmware I/O logic, regenerative protection threshold and servo loop gain; full parameter modification and wiring rearrangement mandatory for substitution.

• Core application: Original Nissei large-tonnage injection molding machines (ES5000 series 242T model as typical matching equipment) and heavy cyclic-load dedicated automation production lines.

7. Key Difference vs Y174/Y278/Y351

1. Y174: Early firmware for intermittent low-frequency braking, lower regeneration protection threshold

2. Y278: Mid-version optimized for medium frequent start-stop, partial I/O definition revised

3. Y351: Tuned gain for medium-heavy continuous load

4. Y352: Optimized for ultra-frequent high-load cyclic operation of injection screw; raised regeneration overvoltage limit, modified servo stiffness gain and customized CN1 signal mapping exclusively for Nissei injection machine original control system.