1. Model Definition & Product Overview

• SGDB: Code for first-generation Sigma-I servo drive series

• 3Z: Base hardware for 30kW rated output, three-phase AC200V high-power specification

• AD: Dual command input hardware, compatible with pulse-type position command and ±10VDC analog speed/torque reference signal

• Y: Customized OEM modification including tailored internal regenerative circuit layout and redefined CN1 I/O pin assignment for designated host controller

• 353: Exclusive locked customized firmware revision, the last variant among Y174/Y278/Y351/Y352/Y353 family with unique factory preloaded parameters, different from all preceding editions.

2. Electrical Ratings

• Main Power Input: 3-phase AC200~230V, 50/60Hz; control power supplied via independent separated terminal block

• Rated Continuous Output: 30kW; peak instantaneous overload up to 300% rated current for abrupt heavy impact load; PWM output 0~230V three-phase AC

• Customized built-in regenerative circuit calibrated by Y353 firmware; regenerative overvoltage protection threshold optimized for ultra-fast cyclic braking of die-casting toggle mechanism; external regenerative resistor is mandatory under full-load continuous cycle operation.

3. Control Modes & Interface Specification

1. Pulse Position Control: Accept open-collector or differential line-driver pulse signals (CW/CCW dual-pulse / A/B quadrature pulse); factory-locked default electronic gear ratio preset exclusively for target machine

2. Analog Speed/Torque Control: Receives external ±10VDC analog reference; closed-loop gain and zero-bias offset fixed inside dedicated Y353 firmware

3. MECHATROLINK-I hardware pads reserved on PCB, yet bus communication function permanently disabled by customized firmware and cannot be activated

• CN1 Connector: Integrated terminal for pulse command, analog input, digital I/O (Servo ON enable, fault reset, positioning complete output, dry-contact fault relay output; pinout mapping unique for die-casting machine original wiring logic)

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

• Onboard RS232 Serial Port: Used for SigmaWin software connection to back up/download parameters, monitor real-time operating data and retrieve historical fault records.

4. Complete Protection Functions

5. Environmental & Mechanical Specifications

• Protection Class: IP20, only cabinet bolt-mounted installation (DIN rail mounting unavailable)

• Cooling System: Dual built-in cooling fans for forced convection heat dissipation

• Ambient Working Range: Operating temperature 0℃ ~ +55℃ (non-condensing); storage temperature -20℃ ~ +85℃; relative humidity 10%~90%RH without dew formation

• Certification: Compliant with CE industrial safety standard.

6. Commissioning & Replacement Instruction

• Supports automatic inertia identification and auto servo gain tuning; front-panel JOG jogging function enables standalone forward/reverse motor test without external controller; all fault history data stored in onboard non-volatile memory for maintenance troubleshooting

• Standard SGDB-3ZAD generic drive or Y174/Y278/Y351/Y352 cannot directly substitute SGDB-3ZADY353 due to unique Y353 firmware-defined I/O logic, regenerative protection parameters and servo loop stiffness; full wiring rearrangement and complete parameter modification required for cross-model replacement.

• Core Application: Custom large-tonnage die-casting machines and hybrid injection molding equipment, terminal upgrade derivative after Y352 variant.

7. Version Difference against Y174/Y278/Y351/Y352

1. Y174: Early original firmware, low regenerative threshold for intermittent low-frequency deceleration

2. Y278: Mid-stage revised firmware for medium frequent start-stop cycles, partial CN1 pin definition modified

3. Y351: Gain optimized for medium-heavy continuous cyclic load of general injection molding equipment

4. Y352: Tuned firmware for high-load injection screw frequent reciprocating operation, upgraded regeneration protection limit

5. Y353: Final customized firmware of this 3Z-Y family, optimized for die-casting toggle high-impact instantaneous load; highest regenerative overvoltage threshold, enhanced anti-vibration servo gain and fully redefined CN1 signal assignment for dedicated die-casting control system.