CACR-SR07AC1ER-Y35
CACR stands for classic Yaskawa Yasnac VS800 full digital AC SERVOPACK servo amplifier series for traditional CNC machine tools and automated production equipment. SR means universal servo unit with three switchable control modes including position, speed and torque via internal parameter adjustment. 07 represents rated matching motor power of 0.7kW and rated continuous output current of 7.6A RMS. A refers to standard general-purpose main control PCB without non-standard customized base hardware. C indicates the drive only accepts ±10VDC analog speed and torque command input, with no differential digital pulse positioning input available. 1 is standard base firmware platform of original factory release. E specifies CN2 feedback connector exclusively for Yaskawa USAREM series incremental encoder motors. R denotes rack-mounted mechanical structure designed for dedicated cabinet rack installation and matching R-type servo motors. Y35 is exclusive OEM factory custom suffix, featuring factory pre-locked fixed I/O assignment and optimized parameter group developed for specific host machine; core customized parameters shall not be altered arbitrarily unless the matched equipment undergoes mechanical structural modification.
Description
1. Model Code Definition
CACR stands for classic Yaskawa Yasnac VS800 full digital AC SERVOPACK servo amplifier series for traditional CNC machine tools and automated production equipment. SR means universal servo unit with three switchable control modes including position, speed and torque via internal parameter adjustment. 07 represents rated matching motor power of 0.7kW and rated continuous output current of 7.6A RMS. A refers to standard general-purpose main control PCB without non-standard customized base hardware. C indicates the drive only accepts ±10VDC analog speed and torque command input, with no differential digital pulse positioning input available. 1 is standard base firmware platform of original factory release. E specifies CN2 feedback connector exclusively for Yaskawa USAREM series incremental encoder motors. R denotes rack-mounted mechanical structure designed for dedicated cabinet rack installation and matching R-type servo motors. Y35 is exclusive OEM factory custom suffix, featuring factory pre-locked fixed I/O assignment and optimized parameter group developed for specific host machine; core customized parameters shall not be altered arbitrarily unless the matched equipment undergoes mechanical structural modification.
2. Electrical Specifications
Main circuit input is three-phase AC200V~230V with allowable voltage deviation from -15% to +10%, compatible with 50Hz and 60Hz industrial power grid. Independent single-phase AC200~230V terminals are reserved for separated control circuit power supply. Continuous rated output current is 7.6A; 300% peak overload can sustain for maximum 3 seconds and 150% overload is allowed to run continuously for 60 seconds. Nominal DC bus voltage ranges DC280V~320V, and P/N spare terminals are reserved for external regenerative braking resistor connection for heavy-load frequent deceleration operating conditions. This model supports pure analog ±10VDC control instruction only without pulse command input channel.
3. Environmental and Mechanical Parameters
Operating ambient temperature ranges from 0℃ to +55℃, storage temperature covers -20℃~+70℃. Working relative humidity is controlled between 5% and 80%RH without condensation. Protection grade is IP20 and the unit must follow rack installation specification and be mounted vertically inside closed electrical cabinet. Maximum applicable installation altitude is below 1000 meters above sea level, and the drive can withstand vibration of 10~55Hz with 0.5mm single amplitude. Net weight is approximately 2.0kg.
4. Control Performance
The servo adopts IGBT sine-wave PWM dual closed-loop control of speed loop and current loop. Speed adjustable ratio reaches 1:5000 with full-load steady-state speed accuracy within ±0.01%. CN2 port is dedicated for USAREM incremental encoder connection and has no built-in circuit for absolute encoder matching. Built-in digital notch filter effectively suppresses mechanical resonance and running vibration. Automatic motor parameter identification is available for basic motor parameter auto-tuning, while gain, acceleration and deceleration parameters customized for Y35 version are factory locked. Three control modes can be switched freely by modifying non-locked available parameters.
5. Interface and Communication Configuration
R/S/T terminals connect three-phase main AC power input; U/V/W terminals link three-phase power cables of matched servo motor; P/N spare 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 Y35 OEM customized definition, including servo enable, forward/reverse overtravel limit, emergency stop, servo ready output and fault alarm output functions. CN2 is exclusive connector for USAREM incremental encoder feedback wiring. Onboard RS422 serial port with Yaskawa proprietary communication protocol is used for parameter reading, writing and real-time operating status monitoring.
6. Core Functions
Position, speed and torque three control modes can be flexibly switched, and electronic gear ratio setup supports multi-axis synchronous linkage for automated equipment. Internal integrated dynamic braking circuit absorbs most regenerative energy generated during deceleration; external braking resistor is only required 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 reference. All Y35 preset parameters are calibrated for designated OEM equipment, random modification of locked parameters is not recommended.
7. Applicable Scenarios
This Y35 customized rack-mounted analog servo drive is exclusively matched with 0.7kW USAREM-R series incremental servo motors for specific original CNC auxiliary feed axes and standardized rack-installed automation equipment. Spare part replacement requires identical full part number CACR-SR07AC1ER-Y35 only.
8. Operation and Routine Maintenance Instructions
Check all power cables, encoder wires and I/O signal wiring to avoid short circuit, loose terminals and wrong connection before power-on. Avoid arbitrary revision of factory-locked Y35 customized parameters without mechanical modification of matched equipment. Ensure cabinet ventilation unobstructed during operation, prohibit long-time continuous running when inner 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 drive heat sink. Cut off main AC power and wait no less than 15 minutes for full discharge of internal DC bus capacitor before any internal disassembly maintenance to prevent electric shock accident. Cut power and stop equipment immediately upon continuous fault alarm, then inspect servo motor, connecting cables and mechanical jamming before restarting operation.
9. Basic Troubleshooting
Overheat alarm is generally caused by blocked heat sink, excessive cabinet ambient temperature or long-term overload running. Encoder error alarm mostly results from loose CN2 connector or damaged incremental encoder feedback cable. Overvoltage fault occurs under frequent rapid deceleration with heavy load; install external regenerative braking resistor on P/N terminals to resolve the problem.
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