1. MODEL CODE DEFINITION
CACR: Classic Yasnac full-digital AC SERVOPACK servo amplifier series of Yaskawa Electric, VS800 platform dedicated drive.
SR: General-purpose three-control-mode servo unit supporting position/speed/torque switchable via parameter setup.
05: Rated matched motor power 0.5kW (500W), corresponding standard current grade specification.
B: Main control board hardware revision B, standard internal power layout version.
Z: Hardware configured for
absolute encoder feedback (backup position data after power cut without mandatory homing on restart), built-in enhanced dynamic brake circuit.
1: Power input specification: 3-phase AC200V~230V, 50/60Hz dual frequency adaptive.
S: Differential 5V encoder signal circuit, compatible with multi-resolution absolute/hybrid encoders ranging from 2048P/R~8192P/R.
F: Factory customized I/O terminal definition for analog speed/torque command input, standard domestic industrial specification version.
2. TECHNICAL SPECIFICATIONS
2.1 Electrical Ratings
Main power input: 3-phase AC200~230V, allowable fluctuation -15%~+10%, 50/60Hz.
Rated continuous output: 0.5kW, RMS continuous output current 3.2A; peak overload current 9.6A (300% overload sustainable for 3 seconds).
Auxiliary control power: Independent single-phase AC200V input terminal for control circuit power supply, isolated from main power loop.
Nominal DC bus voltage: DC280V~320V under rated input condition; P/N spare terminals for external regenerative brake resistor expansion.
2.2 Environmental & Mechanical Parameters
Operating ambient temperature: 0℃ ~ +55℃; storage & transport temperature: -20℃ ~ +70℃.
Working humidity: 5%~90%RH, no dew condensation; protection grade IP20, cabinet-only installation.
Mounting type: vertical wall fixed mounting; net weight approx 2.05kg; max applicable altitude ≤1000m above sea level.
Vibration resistance: 10~55Hz, 0.5mm amplitude anti-vibration standard.
2.3 Control Performance Index
Control algorithm: IGBT sine-wave PWM dual closed-loop control (speed loop + position loop).
Speed adjustment range: 1:3000; steady-state speed precision ≤±0.02% under full rated load.
Positioning repeat accuracy: ±1 encoder pulse; max external position pulse input frequency 500kpps (5V differential driver format).
Support encoder: Multi-turn absolute encoder (main feature for Z code), optional incremental 2500/5000/8192P/R PG motor matching.
Built-in mechanical resonance notch filter for vibration suppression.
2.4 Full Protection Functions
Overcurrent, overvoltage, undervoltage, drive overheat, motor overload, absolute encoder wire breakage, regenerative overvoltage, main circuit phase loss, CPU operation abnormality protection; fault codes displayed via front panel 7-segment LED screen.
3. INTERFACE AND COMMUNICATION CONFIGURATION
3.1 Main Power Terminals
R/S/T: Three-phase main AC power input; U/V/W: 3-phase servo motor power output; P/N: external regenerative brake resistor reserved terminals for heavy frequent deceleration load.
3.2 Signal Connectors
CN2 (PG encoder port): Dedicated absolute encoder connector, 5V differential serial+A/B/Z hybrid feedback interface for Yaskawa SGM series absolute servo motors.
CN1 universal I/O terminal block: 8-channel opto-isolated digital input, 6-channel relay isolated digital output; configurable for servo enable, forward/reverse limit, origin search input, emergency stop, drive fault alarm output, servo ready signal.
3.3 Command & Communication Interfaces
Analog command input: ±6VDC analog speed reference, ±3VDC analog torque reference for external PLC analog control (core feature of F suffix).
Position pulse input: CW/CCW dual-pulse or pulse+direction differential 5V signal for external positioning command.
Onboard proprietary Yaskawa RS422 serial communication: for parameter upload/download, real-time operation status monitoring and historical fault query; optional expansion board supports Modbus-RTU bus networking.
4. CORE FUNCTIONS
Three-mode flexible switching: Position closed-loop for fixed-point precision positioning, speed closed-loop for constant-speed conveying, torque closed-loop for constant tension winding; electronic gear ratio available for multi-axis synchronous linkage.
One-click auto motor parameter identification: Automatically detect motor resistance, inductance and rotor inertia, auto-optimize speed/position loop gain to shorten field debugging cycle.
Absolute encoder power-off position retention: No need for mechanical homing after power outage, greatly improving production efficiency (core advantage of Z coding).
Built-in integrated dynamic brake circuit: Internal braking module absorbs regenerative energy during deceleration; external resistor only required for high-cycle heavy-load frequent emergency stop.
Segmented gain setting: Independent low/high speed gain parameters to guarantee smooth low-speed operation and fast high-speed dynamic response; multi-group historical fault data storage for maintenance troubleshooting.
5. APPLICABLE SCENARIOS
Designed for low-power high-precision automation equipment requiring power-off position memory: small CNC tapping machine, electronic component insertion equipment, miniature labeling conveyor, textile yarn feeding mechanism, small precision cutting equipment, automated testing fixture and old Yasnac machine tool auxiliary feed axis retrofit.
6. OPERATION & ROUTINE MAINTENANCE INSTRUCTIONS
6.1 Pre-Power-On Inspection
Verify all power cable, encoder wire and I/O signal wiring for short circuit, loose terminals or misconnection before energization; complete motor parameter matching and gain tuning based on actual mechanical load before formal trial run.
6.2 Daily Operation Rules
Ensure electrical cabinet ventilation is unobstructed; forbid continuous running when inner cabinet temperature exceeds 55℃; avoid frequent short-interval power on/off operation.
6.3 Periodic Maintenance
Every 3~6 months: Retighten all terminal screws, inspect cable insulation aging or cracking, clean dust accumulated on drive heat sink and cabinet air duct.
All internal disassembly maintenance must cut off main AC supply and wait at least 15 minutes for DC bus capacitor full discharge to avoid electric shock hazard.
Cut off power immediately upon continuous fault alarm; inspect motor winding, wiring harness and mechanical jamming before equipment restart.
7. BASIC TROUBLESHOOTING
Overheat alarm: Clogged heat sink, overhigh ambient temperature or long-time overload operation.
Encoder failure alarm: Loose CN2 connector, broken absolute encoder feedback cable.
Overvoltage fault: Frequent rapid deceleration under heavy load, install external brake resistor at P/N terminals.
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