Model Analysis (CACR-SR02AB1ER-Y1)

CACR-SR: Yaskawa VS-800 series servo unit (old model)

02: 0.2kW (200W)

AB: Installation specification / Current rating

1ER: Control firmware version (exclusive to ER)

Y1: Specialized version for machine tools (parameters / programs specially adjusted)

Type: AC Servo Drive, compatible with Yaskawa USACEM series motors.

II. Core Electrical Parameters

• Input Power: Three-phase AC200V ±10%, 50/60Hz

• Output Power: 0.2kW (200W)

• Rated Output Current: 2.5A

• Maximum Output Current: 7.5A (300% overload)

• Encoder Compatibility: 1000/1500 ppr (pulses per revolution)

• Control Modes: Speed / Position / Torque control

• Response Frequency: Approximately 500Hz

• Protection Functions: Overcurrent, Overvoltage, Undervoltage, Overheat, Encoder Abnormality, Overload

• Cooling Method: Self-cooling (fanless)

• Environment: 0–45℃, humidity ≤ 90% (no condensation)

III. Interfaces and Terminals (CN1/CN2 / Main Circuit)

Main Circuit Terminals (R/S/T/U/V/W)

• R/S/T: Three-phase 200V input

• U/V/W: Servo motor output

• ⊕/⊖: DC bus (can be connected to a braking resistor)

Control Interface CN1 (50-pin)

• Command Input: ±10V speed command, pulse sequence (position)

• Output Signals: Servo ready, alarm, position completed, speed reached

• Power: +24V (external), 0V

Encoder Interface CN2 (20-pin)

• Compatibility: Yaskawa incremental encoder (A/B/Z phases, +5V power supply)

• Pulses: 1000/1500 ppr (parameter configurable)

IV. Panel Operation and Parameters (Common to the Series)

Panel Display

• 1-digit digital tube: Status / Alarm code (e.g., 1 = Overcurrent, 2 = Overvoltage, 3 = Undervoltage, 4 = Overheat)

• Keys: MODE (mode), SET (confirm), ↑/↓ (increase/decrease)

Common Parameters (Cn-xx)

• Cn-01: Motor type selection (0 = standard, 1 = custom)

• Cn-02: Encoder pulse count (1000/1500)

• Cn-03: Speed loop gain (default 50, range 10–200)

• Cn-04: Position loop gain (default 30, range 10–100)

• Cn-05: Overload protection level (default 150%, 100%–300%)

• Cn-06: Braking resistor value (default none, external connection required)

Basic Operation Steps

1. Wiring: Connect R/S/T to 200V, U/V/W to the motor, CN2 to the encoder, and CN1 to the control signal.

2. Power on: The digital tube displays "0" (normal).

3. Parameter setting:

   - Press MODE to enter parameter mode → Select Cn-02 → Press SET → Use ↑/↓ to set to 1000/1500 → Press SET to save.

   - Press MODE to return to operation mode.

4. Operation: Provide speed / position commands externally, and the motor will run; check the digital tube code for alarms.

V. Alternatives and Compatibility

• Common hardware in the series: CACR-SR02AB1AM/1BF/1BM (only firmware differs).

• Custom version Y1: Cannot be directly replaced by the standard version, as it will result in alarms / parameter mismatches. Firmware reflash or parameter modification is required.

VI. Physical Appearance and Dimensions

• Appearance: Black metal casing, panel with digital tube + keys, complete model marked on the side nameplate.

• Dimensions (width × height × depth): Approximately 40×150×120 mm

• Installation: Fixed with base screws (AB specification).