1. Product Overview & Model Code Explanation

Model breakdown

• USAGED: Totally enclosed natural cooling servo base series with factory fitted power-off brake;

• 44: 4.4kW power grade;

• A: Standard stator winding & standard mechanical frame;

• First 2: Solid parallel key output shaft with standard oil seal;

• Second 2: Three separated independent rear round connectors (power / brake / encoder split wiring);

• SE: European export customized pin definition, CE wiring standard, special encoder wiring layout for EU market equipment.

2. Core Electrical Parameters

• Rated continuous output: 4.4kW, rated continuous current: 33A

• Rated speed: 1500rpm, continuous rated torque: 28.4Nm; peak overload torque = 3×rated torque for heavy startup & impact load

• Built-in DC24V brake: energize release shaft, power loss mechanical lock to prevent vertical axis falling;

• Encoder: UTOPH-81AVF differential incremental encoder, resolution 8192ppr, exclusive SE-version pinout matching CACR-SR100-EU driver directly without rewiring;

• Insulation Class F, built-in winding thermal sensor for overheat protection; internal surge suppression circuit for industrial anti-EMI & anti-surge performance.

3. Mechanical & Environmental Specs

• Enclosure: Full sealed IP50 protection, natural convection cooling (no cooling fan), flange mounting structure;

• Shaft: Solid single flat key output shaft for direct coupling with ball screw/reducer; integrated brake housing lengthens overall body size; net weight approx.46.2kg;

• Working ambient: 0℃~+40℃; storage temperature: -20℃~+70℃; humidity 5%~80%RH non-condensation; load derating required when installation altitude＞1000m;

• Vibration resistance: 10Hz~55Hz industrial standard vibration; prohibited for corrosive gas, continuous water splash and heavy conductive dust environment;

• Withstand voltage: 1500VAC/1min; insulation resistance ≥10MΩ @500VDC.

4. Servo Drive Matching & Control Mode

1. ±10VDC analog speed signal;

2. Differential pulse position command from CNC/PLC controller.

   Mainly for vertical heavy-load installation; built-in brake removes extra external mechanical anti-drop stopper; full mechanical origin homing is required after full power cut before formal operation.

5. Multi-layer Protection & Fault Alarm

1. Winding over-temperature → driver overload shutdown protection;

2. Encoder cable open/poor contact → dedicated encoder fault alarm on drive panel;

3. Main circuit overcurrent / winding short → hardware instant power cutoff protection;

4. Brake coil open/short → auxiliary fault warning output from servo unit;

   All control circuits adopt noise absorption components to suppress field inverter EMI interference.

6. Replacement & Routine Maintenance Guide

• Direct replacement requires identical USAGED-44A22SE; domestic K variant USAGED-44A22K cannot direct swap, must modify connector wiring + reset full servo parameters before replacement;

• Before brake/bearing/encoder overhaul: fully cut off 3-phase main power + DC24V brake power, wait ≥15min for servo DC bus capacitor complete discharge to avoid high voltage electric shock;

• Periodic maintenance: tighten three rear connector terminals every 3 months; replenish high temp bearing grease after 8000 running hours; clean casing dust semi-annually; arbitrary modification of encoder/brake wiring causes motor runaway or driver permanent lock fault.

7. Typical Application Scope