Yaskawa CIMR-V7AZ21P5 220V 1.5kW Compact AC Drive (V7 Series)

The Yaskawa CIMR-V7AZ21P5 is a compact, single-phase input AC drive from the V7 mini series. Rated for 220V input and delivering 1.5kW output, this VFD is designed for small machinery and light industrial applications. It combines sensorless vector control, a built-in PID controller, and flexible PLC interfacing in a space-saving package. Typical uses include small conveyors, packaging machines, food processing equipment, and pump/fan control.

Technical Specifications

• Rated Motor Power: 1.5 kW (2 HP)

• Rated Output Current: 8.0 A

• Input Voltage: Single-phase 200–240V AC ±10%, 50/60Hz

• Output Frequency: 0.1–400 Hz

• Overload Capacity: 150% for 60 seconds, 200% for 3 seconds

• Carrier Frequency: 2–15 kHz (programmable, with automatic reduction at high temperature)

Advanced Control Modes

The CIMR-V7AZ21P5 offers three control methods: V/f control, V/f with PG feedback (optional), and sensorless vector control. Sensorless vector provides high starting torque (150% at 0.5 Hz) and improved speed regulation (±0.5% without encoder). This allows the drive to handle variable torque loads (fans, pumps) and constant torque loads (conveyors, mixers) effectively. A slip compensation function automatically adjusts output frequency to maintain motor speed under varying load.

Built-in PID with Sleep Function

An integrated PID controller accepts a 0-10V or 4-20mA feedback signal from a pressure, flow, or temperature sensor. The setpoint can be fixed via a potentiometer or dynamically sent from a PLC. The sleep function stops the motor when demand falls below a threshold (e.g., no flow in a pump system) and automatically restarts when needed, saving energy and reducing wear.

I/O and PLC Connectivity

The drive provides: 6 digital inputs (24V DC, 6mA) programmable for run/stop, JOG, multi-speed (7 preset speeds), acceleration/deceleration selection, and PID enable; 1 analog input (0-10V or 4-20mA) for speed reference; 1 analog output (0-10V) for frequency or current monitoring; 1 relay output (250V AC, 1A) for run/fault indication; and an open-collector output for frequency agree or speed detection. A built-in RS-485 port (Modbus RTU / MEMOBUS) enables full control and monitoring from a PLC: start/stop, speed setpoint, read output current, voltage, power, and fault history.

Compact Design and Installation

Dimensions: 128mm (H) × 108mm (W) × 130mm (D). Weight 1.2 kg. Mounting is via DIN rail or M4 screws on a flat surface. The drive features a side-by-side mounting capability with zero clearance (except for cooling). Ambient temperature range: -10°C to +50°C (derate above 40°C). Enclosure IP20. The control terminals are removable spring-cage type for easy wiring.

Protection and Diagnostics

Protections include: overcurrent (instantaneous trip), overvoltage (DC bus > 400V), undervoltage (< 150V), motor overload (electronic thermal), drive overload (I²t), heatsink overtemperature, output short circuit, ground fault, and input phase loss (for three-phase input models; single-phase models have phase loss detection disabled). The drive also features stall prevention during acceleration/deceleration and a fault retry function (up to 10 attempts).

Energy Saving Features

An energy-saving mode reduces output voltage when the motor is lightly loaded, optimizing efficiency for variable torque applications. The drive calculates actual power consumption (kW) and cumulative energy (kWh), which can be read via Modbus by a PLC for energy monitoring and reporting. For fan/pump applications, the square V/f profile matches the motor torque requirement to the load, further reducing losses.

Applications in Automated Systems

The CIMR-V7AZ21P5 is commonly used in small packaging machines (bagging, sealing), conveyor belts (speed control via PLC analog output), laboratory mixers, and small pumps in water treatment. With its compact size, it can be mounted inside PLC cabinets. The multi-speed function allows a PLC with only digital outputs to select up to 7 speeds without an analog module, reducing system cost.

Standards and Compliance

The drive complies with CE (EMC: EN 61800-3, LVD: EN 61800-5-1), UL 508C, cUL, and RoHS. It meets the harmonic standard IEC 61000-3-2 with optional external filter. The V7 series is known for its high MTBF (over 100,000 hours) and easy setup.

Conclusion

The Yaskawa CIMR-V7AZ21P5 220V 1.5kW AC drive offers sensorless vector performance, built-in PID, and robust PLC integration in a compact footprint. It is a reliable and energy-efficient solution for small machinery and light industrial automation.