22C-B049A103 — VFD-C Series AC Drive, 240V Three-Phase, 22 kW / 30 HP, IP30

The 22C-B049A103 is a 240V three-phase AC drive from the 22C series rated at 49A output current — approximately 22 kW / 30 HP at 240V. The IP30 / NEMA 1 enclosure adds a top cover for protection against falling objects in open-rack or semi-exposed installations. It supports V/Hz and sensorless vector control, includes a DSI RS-485 port as standard, and accepts communication option cards for EtherNet/IP, DeviceNet, and other networks via the peripheral option port.

At 30 HP on 240V, this drive covers mid-power industrial loads: centrifugal pumps and fans in the 15–22 kW range, conveyor systems, compressors, and agitator drives where 240V three-phase supply is available rather than 480V. The 22C platform's option card architecture means communication and encoder expansion can be added without platform change.

Specifications

Parameter	Value
Part Number	22C-B049A103
Series	22C (VFD-C)
Power Rating	22 kW / 30 HP
Input Voltage	200–240V AC, Three-Phase
Output Current	49 A
Output Frequency	0–400 Hz
Control Modes	V/Hz, Sensorless Vector (SVC)
Communication	DSI RS-485 (native); option cards via peripheral port
Digital Inputs	5 × 24V DC (programmable)
Analog Inputs	2 × (0–10V or 4–20 mA, jumper-selectable)
Relay Output	1 × Form A (NO)
Enclosure	IP30 / NEMA 1
Operating Temperature	−10°C to 50°C (derate above 40°C)
Approvals	UL, CE, C-Tick

Running 49A at 240V — Installation Realities

Forty-nine amps at 240V three-phase represents meaningful current in a panel. Input current at full load will be approximately 50–55A AC — the drive's own efficiency and power factor determine the exact figure. Input wiring must be sized for this current: minimum 6 AWG (or 10 mm²) copper conductor for a 50A circuit at standard conduit fill and ambient temperature, though local electrical code and actual installation conditions govern the final sizing.

Input branch circuit protection must be a dedicated circuit breaker or fuse set sized for the drive's input current rating. The drive shares no input circuit with other loads — motor starting inrush on adjacent equipment can cause nuisance trips if shared fusing isn't sized for the combined worst-case inrush. At this current level, semiconductor-rated fuses provide faster fault clearing and better drive protection than standard thermal-magnetic breakers.

Panel thermal management at 49A output: the drive dissipates approximately 500–600W at full load. In a sealed panel, this alone can raise internal temperature by 15–25°C above ambient within an hour. Panel cooling (air conditioner or ventilated fan) is typically required unless the panel has substantial thermal mass and generous surface area. The 40°C derating threshold matters — at 45°C internal ambient, available output current drops approximately 5–10%.

Control, Communication, and Autotune

The two analog inputs are jumper-configured individually — 0–10V voltage mode and 4–20 mA current mode are selectable per input. A common arrangement: Analog Input 1 (0–10V) for the speed reference from a PLC analog output; Analog Input 2 (4–20 mA) for a process feedback signal connected to the drive's onboard PID. The PID loop then adjusts drive speed to maintain a pressure or flow setpoint without requiring a PLC PID instruction or analog output from the PLC for feedback.

For EtherNet/IP integration, install a 22-COMM-E option card in the peripheral port. This adds a full EtherNet/IP port with cyclic I/O messaging and explicit parameter access — speed commands from the controller's output tags, drive status and current feedback in the controller's input tags. Run static autotune before enabling SVC mode: accurate motor nameplate data is mandatory, and the autotune's resistance and inductance measurements calibrate the SVC torque model to the specific motor.

FAQ

Q: Is a line reactor recommended at this current level?

Yes. A 1.5–3% input line reactor reduces harmonic current distortion, limits voltage transient stress on the input rectifier, and improves DC bus ripple at this current level. At 49A, the line reactor is a standard component in a well-engineered installation, not an optional add-on.

Q: Can the drive be derated for altitudes above 1000 m?

Yes. Above 1000 m, air density decreases and the drive's cooling efficiency drops. Output current must be derated approximately 1% per 100 m above 1000 m. At 2000 m, the derating is approximately 10% — available output current drops from 49A to approximately 44A.

Q: Does the drive support a dynamic braking resistor for fast deceleration?

An internal dynamic braking transistor is fitted. Connect an external braking resistor to the drive's DB+ and R terminals. Size the resistor for the application's peak braking power and duty cycle — undersizing causes resistor overtemperature; oversizing is wasteful but not harmful.

Q: Can the onboard PID replace a PLC PID for simple pressure control?

For single-loop, single-setpoint applications (maintain pressure at a fixed target), yes. Set the process feedback to Analog Input 2, enter the setpoint as a drive parameter or via Analog Input 1, and the drive's PID adjusts speed to maintain the target. For multi-setpoint scheduling, cascade control, or logic-dependent setpoint changes, a PLC-based PID is more appropriate.

22C-B049A103 New Power Drive Ser B 22CB049A103