CACR-SR05TZ6SSE
CACR refers to classic Yaskawa Yasnac VS800 full digital AC SERVOPACK servo amplifier series. SR means universal servo unit with three switchable control modes including position, speed and torque by parameter setting. 05 stands for 0.5kW rated matching motor power. T represents T-version main control board with customized hardware circuit layout. Z indicates built-in dedicated multi-turn serial absolute encoder processing circuit and integrated internal dynamic braking module, which stores absolute position data after power loss and removes compulsory homing after equipment restart. 6 is the sixth generation fixed firmware version with preset customized I/O allocation. The first S defines CN2 feedback connector for serial differential multi-turn absolute encoder signal access. The second S means dual command configuration: differential digital pulse as primary positioning command plus reserved analog ±10VDC auxiliary speed/torque input, different from analog-only F-type variant. E denotes universal encoder compatibility, supporting both incremental and absolute feedback motors of Yaskawa traditional SGM and USA series.
Description
1. Model Code Definition
CACR refers to classic Yaskawa Yasnac VS800 full digital AC SERVOPACK servo amplifier series. SR means universal servo unit with three switchable control modes including position, speed and torque by parameter setting. 05 stands for 0.5kW rated matching motor power. T represents T-version main control board with customized hardware circuit layout. Z indicates built-in dedicated multi-turn serial absolute encoder processing circuit and integrated internal dynamic braking module, which stores absolute position data after power loss and removes compulsory homing after equipment restart. 6 is the sixth generation fixed firmware version with preset customized I/O allocation. The first S defines CN2 feedback connector for serial differential multi-turn absolute encoder signal access. The second S means dual command configuration: differential digital pulse as primary positioning command plus reserved analog ±10VDC auxiliary speed/torque input, different from analog-only F-type variant. E denotes universal encoder compatibility, supporting both incremental and absolute feedback motors of Yaskawa traditional SGM and USA series.
2. Electrical Specifications
Main circuit power input is three-phase AC200V~230V with allowable voltage deviation ranging from minus 15 percent to plus 10 percent, compatible with 50Hz and 60Hz power grid. Independent single-phase AC200~230V terminals are arranged for separated control power supply. Rated continuous output power is 0.5kW and continuous rated output current is 3.2A. It can bear 300% peak overload current of 9.6A within 3 seconds and sustain 150% overload condition for up to 60 seconds continuously. Nominal DC bus voltage stays between DC280V and DC320V, and P/N spare terminals are reserved for external regenerative braking resistor connection under heavy-load frequent deceleration working conditions. Two available command types are equipped for this model: 5V differential pulse signal for position control and ±10VDC analog voltage signal for speed or torque regulation.
3. Environmental and Mechanical Parameters
Valid operating ambient temperature ranges from 0℃ to +55℃, short-time peak working temperature cannot exceed 60℃; storage temperature covers -20℃~+70℃. Working relative humidity is kept at 5%~80%RH without condensation. Protection rating is IP20 and the unit must be vertically installed inside closed electrical cabinet only. Net weight is approximately 2.05kg; maximum applicable installation altitude is below 1000 meters above sea level, and the drive withstands 10~55Hz vibration with 0.5mm single amplitude.
4. Control Performance
The servo applies IGBT sine-wave PWM dual closed-loop control of speed loop and position loop. Speed adjustment ratio reaches 1:5000 and full-load steady speed precision is within ±0.01%. Users can choose either digital differential pulse or analog voltage as operation command according to practical application requirement. CN2 interface matches multi-turn serial absolute encoder to realize power-off position memory function. Built-in digital notch filter suppresses mechanical resonance and reduces running vibration. Three control modes can be freely switched by modifying internal parameters; core I/O and partial gain parameters are fixed by Version 6 factory firmware.
5. Interface and Communication Configuration
R/S/T terminals connect three-phase main alternating current input; U/V/W terminals link three-phase power cable of matched servo motor; P/N terminals are prepared for external regenerative brake resistor wiring. CN1 is opto-isolated digital I/O terminal block with 8 input channels and 6 relay output channels following fixed OEM definition, containing servo enable, positive/negative travel limit, origin detection input, emergency stop, servo ready output and fault alarm output functions. CN2 is exclusive connector for serial absolute encoder feedback connection. Standard onboard RS422 serial port with Yaskawa proprietary communication protocol is used for parameter reading, writing and real-time operating status monitoring; optional expansion parts support Modbus-RTU bus connection with upper PLC system.
6. Core Functions
Position, speed and torque control modes can be flexibly switched, and electronic gear ratio setup realizes multi-axis synchronous movement for automated equipment. Automatic motor identification function completes one-click measurement of motor resistance, inductance and rotor inertia to optimize closed-loop gain automatically and shorten field debugging cycle. Absolute position storage feature cancels homing operation after power failure and improves production efficiency. Internal integrated braking circuit absorbs most regenerative energy during deceleration; external brake resistor is only needed for heavy-duty frequent emergency stop scenarios. Separated low and high speed gain parameters ensure stable low-speed running and rapid high-speed dynamic response. The drive automatically stores latest 10 groups of historical fault codes for maintenance check.
7. Applicable Scenarios
This dual-command servo drive with absolute encoder is widely used on customized small CNC auxiliary feed axes, precision electronic assembly equipment, miniature gantry positioning machines and automatic feeding devices which need optional pulse or analog control and power-off position retention.
8. Operation and Routine Maintenance Instructions
Check all power cables, absolute encoder wires and I/O signal wiring to avoid short circuit, loose terminals and wrong connection before power supply is switched on. Complete motor parameter matching and gain debugging based on actual mechanical load. Ensure cabinet ventilation is unblocked during operation, avoid long-time continuous running when internal cabinet temperature exceeds 55℃ and refrain from frequent short-interval power on and off. Perform periodic maintenance every three to six months: tighten loose terminal screws, inspect cable insulation aging and clear dust accumulated on heat sink and cabinet air duct. Cut off main AC power and wait at least 15 minutes for full discharge of internal DC bus capacitor before any internal disassembly maintenance to prevent electric shock accident. Stop equipment and cut power immediately when continuous fault alarm appears, then inspect motor, wiring and mechanical jamming before restart.
9. Basic Troubleshooting
Overheat alarm is generally caused by blocked heat sink, excessive cabinet ambient temperature or long-term overload running. Encoder error alarm results from loose CN2 connector or damaged absolute encoder cable. Overvoltage fault happens during frequent rapid deceleration under heavy load; install external regenerative resistor on P/N terminals for improvement.
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