1. Product Introduction

Model Code Definition

• CACR: VS800 dedicated feed-axis servo series for CNC machine tools

• SR: Dual command input: ±10VDC analog speed + differential pulse position command

• 15: Rated matched motor power: 1.5kW

• BE: Standard mainboard PCB layout

• 2: Independent separated power supply for main power & control circuit

• 12G: Universal base G-type firmware platform of VS800

• Y8: Unique OEM locked custom firmware code (fixed machine-specific tuning & fixed IO allocation, non-standard universal program)

Replacement Tip: Standard CACR-SR15BE12G cannot plug-and-play substitute Y8 drive; only identical CACR-SR15BE12G-Y8 is direct replacement, firmware rewriting required for cross-version replacement.

2. Standard Electrical Parameters (Hardware same as base 12G, only customized software)

• Main power input: 3-phase AC200~230V, 50/60Hz, allowable voltage tolerance: -15%~+10%

• Control power: Independent single-phase AC200~230V separate power source

• Rated continuous output current: 11.7A; overload rating: 150% rated for 60s, peak 300% overload within 3s startup

• Drive mode: Sine-wave IGBT PWM modulation, max output frequency:300Hz; DC bus nominal voltage DC280~320V

• Terminal P-BN: Reserved for external regenerative braking resistor wiring

• Protection class: IP20, vertical cabinet installation only; net weight ≈3.3kg

• CN2 feedback port: Factory set only for incremental encoder; absolute encoder function locked off under Y8 custom program.

Exclusive Y8 Custom Software Restrictions

1. Position loop proportional gain, speed PI gain, S-curve acceleration/deceleration, notch filter parameters are factory preset & parameter-lock protected; end-user forbidden to edit core tuning data

2. All CN1 opto-isolated digital I/O pin functions fixed by Y8 firmware; IO redefinition via parameter modification is disabled

3. Control mode locked: single fixed working mode (position/speed preset per OEM machine design), free switching of speed/position/torque three control modes is prohibited

4. RS422 serial communication: Only parameter reading available; write authority of core operating parameters blocked by Y8 custom lock.

3. Ambient & Installation Specification

• Operating temperature: 0℃ ~ +55℃; storage temperature: -20℃ ~ +70℃

• Working humidity:5%~80%RH without condensation

• Derate output power when installation altitude over 1000m above sea level

• Vibration resistance:10~55Hz, max vibration amplitude 0.5mm

• Cabinet layout: Reserve ≥50mm top & bottom clearance for heat dissipation

• Maintenance rule: Cut off all AC power, wait ≥15min for DC bus capacitor full discharge before casing disassembly or CN1/CN2 plug/unplug; hot-plug under energized status strictly prohibited.

4. Terminal & Connector Description

• R/S/T: 3-phase main AC power input terminals; U/V/W: Servo motor three-phase power output terminals

• P & BN: External dynamic braking resistor connection terminals

• CN1: Optocoupler isolated digital I/O, pin function fixed by Y8 customized program

• CN2: Dedicated incremental encoder feedback connector

• Front panel 7-segment LED: Display running status + unified VS800 standard fault codes.

5. Built-in Full Protection Functions

6. Maintenance & Replacement Guidance

1. Preferred spare part: Original same model CACR-SR15BE12G-Y8; general standard 12G servo cannot direct replacement unless professional Y8 dedicated firmware flashing

2. Periodic maintenance: Check tightness of power terminals & CN1/CN2 connectors before startup; clean radiator dust every 3~6 months to prevent overheat shutdown

3. Factory parameter reset: After initialization, all parameters restore to locked Y8 OEM preset values, all temporary user modified data will be cleared completely.

7. Common Troubleshooting

• Overheat alarm: Radiator dust clogging / poor cabinet ventilation / mechanical overload → clean cooling fins or reduce machine running load

• Encoder fault: Loose CN2 connector, damaged feedback cable or mismatched non-original motor → check wiring and use matched incremental servo motor

• Deceleration overvoltage: Add external braking resistor between P and BN terminals

• Failed parameter writing: Normal Y8 OEM firmware lock design; parameter unlock requires official Yaskawa Y8 program rewrite.

8. VS800 Universal Fault Code Table