1. Model Coding Definition (VS800/Yasnac SERVOPACK Series, OEM customized Y187 version)

• CACR: Yaskawa classic full digital AC SERVOPACK servo amplifier platform for old CNC Yasnac system

• SR: Triple control mode (Position/Speed/Torque switchable via internal parameter)

• 05: Rated matched servo motor power: 0.5kW

• S: S-version main control PCB, dedicated for incremental line-driver encoder circuit

• B: B-version power supply board standard hardware layout

• 1: Main power input: 3-phase AC200~230V, 50/60Hz

• B: CN2 feedback port only for differential incremental A/B/Z encoder (No absolute encoder hardware support)

• F: Main command = ±10VDC analog voltage; factory fixed customized CN1 I/O terminal definition

• Y187: Exclusive OEM factory custom suffix: fixed locked parameter set, dedicated I/O signal logic preset for specific CNC machine feed axis; core parameters are factory-locked, random parameter modification invalidates machine matching

2. Electrical Rating Parameter

Input Power

• Main circuit: 3φ AC200~230V, tolerance +10%/-15%, 50/60Hz (Terminals R/S/T)

• Control circuit: Independent single-phase AC200~230V separated power input

Output Spec

• Rated continuous output current: 3.2A RMS

• 150% overload: sustainable 60s; 300% peak overload (9.6A): max 3s

• DC bus voltage: DC280~320V; P/N spare terminals for external regenerative brake resistor connection for frequent deceleration heavy load

Command & Feedback

• Primary command: Analog ±10VDC speed/torque input

• Auxiliary position command: External differential pulse, max input frequency:500kpps

• Feedback: CN2 exclusively for 5V differential incremental A/B/Z phase encoder

3. Environmental & Mechanical Data

• Operating ambient temp: 0℃~+55℃, short peak allowable ≤60℃

• Storage temperature: -20℃~+70℃

• Humidity: 5%~80%RH, non-condensation; Protection grade: IP20 (cabinet vertical mounting only)

• Max installation altitude ≤1000m above sea level

• Anti-vibration: 10~55Hz, 0.5mm amplitude; Natural air cooling without built-in fan

• Net weight: approx 4.7~4.9kg, CE certified compliance

4. Control Performance

• Control scheme: IGBT sine-wave PWM, dual closed-loop (speed+position loop)

• Speed regulation ratio:1:5000; full-load steady speed accuracy ≤±0.01%

• Built-in digital notch filter for mechanical resonance suppression

• 3 control modes configurable by parameter, but partial parameters locked by Y187 OEM firmware, cannot be freely altered

• Auto motor identification available only for non-locked basic motor parameters

5. Terminal & Connector Definition

1. Main Power Terminals:

   R/S/T=3φ input; U/V/W=3-phase servo motor connection; P/N=External brake resistor terminals

2. CN1 (Opto-isolated I/O block, Y187 fixed OEM pin assignment):

   Servo enable input, forward/reverse hardware limit, reverse limit, home origin input, E-stop input; Servo Ready output, Drive Fault alarm relay output (fixed logic defined by Y187 custom program, different from standard BF model)

3. CN2: Exclusive incremental encoder feedback connector

4. Onboard RS422 serial port (Yaskawa proprietary protocol): Parameter read/write & runtime status monitoring

6. Full Protection Functions

• Fault code displayed via front panel digital nixie tube; stores latest 10 fault history records for maintenance check

• Y187 customized program adds dedicated external fault detection logic matching original machine peripheral circuit

7. Application & Replacement Note

• This Y187 customized servo is exclusively OEM-matched for dedicated analog-controlled CNC feed axis; cannot be replaced with standard CACR-SR05SB1BF without Y187 suffix, due to different preset I/O logic and locked factory parameters

• Replacement must select identical part number: CACR-SR05SB1BF-Y187 only

8. Operation & Periodic Maintenance

Pre-power-on Check

Running Requirement

Maintenance Cycle (3~6 months)

1. Tighten all terminal screws, clean radiator dust accumulation

2. Cut main power and wait minimum 15 minutes for internal DC capacitor full discharge before opening casing to prevent electric shock

9. Common Fault Troubleshooting

1. Overheat Alarm: Clogged heat sink, overhigh cabinet ambient temp or continuous overload operation

2. Encoder Error Alarm: Loose CN2 connector pin or damaged incremental feedback cable

3. Regeneration Overvoltage Alarm: Frequent rapid deceleration under heavy load; install external braking resistor between P and N terminals