Digital display variable-speed drive H300

PWMthree-phaseModbus

Overview
The H300 Variable Frequency Drive (VFD) is an HVAC specialist AC drive engineered for precise control of fans, pumps and compressors in building automation and HVAC systems. It combines compact dimensions, wide power range and advanced motor control to meet project and installation constraints.

Key product summary
Specialist HVAC VFD · Power range: 1.1 kW to 2.8 MW · Supply voltages: 200/240 Vac, 380/480 Vac, 500/575 Vac, 500/690 Vac · Typical switching frequency up to 16 kHz · Max conversion efficiency up to 98% · 5‑year standard warranty.

Features

• Optimised motor control for fans, pumps and compressors (dynamic Volts/Hertz and advanced control modes).
• Built-in dual process PID loops for independent or combined control.
• Thermistor input for direct temperature-sensor monitoring.
• Conformally coated PCBs for improved reliability in harsh environments.
• Low audible noise: high switching frequencies and intelligent 10-speed cooling fan.
• Compact frames to maximise mounting flexibility and reduce footprint.

Building automation and communications

• Onboard BACnet MS/TP and Modbus RTU.
• Optional SI modules: BACnet IP (BTL tested), POWERLINK, EtherNet/IP, Modbus TCP/IP, PROFINET, PROFIBUS, DeviceNet and CANopen.

Custom software and intelligence

• Onboard PLC for standalone logic without a BMS.
• Optional MCi processors (MCi200 / MCi210) for IEC61131-3 application customization.
• Optional application modules and non-volatile media for program storage.

Fire mode

• Dedicated fire mode to maintain uninterrupted drive operation for smoke extraction; configurable to relax certain protections during emergencies.

Energy and efficiency

• Conversion efficiency up to 98% and support for high-efficiency permanent-magnet motors.
• Energy-saving modes: Sleep, Wake and Standby to minimise losses.
• Onboard power metering with cost-per-kWh tracking and energy estimation tools.

Environmental and operating conditions

• Operating ambient: -20 °C to 40 °C standard; up to 55 °C with derating.
• Storage: -40 °C to 55 °C (short-term to 70 °C).
• Humidity: up to 95% non‑condensing at 40 °C.
• Altitude: 0–3000 m (derate 1% per 100 m between 1000 m and 3000 m).
• Mechanical tests: random/sinusoidal vibration, bump and shock to IEC 60068 series.

Enclosures and protection
The H300 is available in standard IP20 / NEMA 1 / UL Type 1 and high-IP variants including IP65 (through-panel NEMA 4 / UL Type 12). Certain frames (e.g. 9D/9E/10D/10E) achieve IP55 ratings for harsher environments.

Quick commissioning and maintenance

• Smartcard for parameter backup and simple commissioning without a PC.
• SD card adapter for parameter storage and data logging.
• Local operator interfaces: KI-Keypad Plus (colour display, Bluetooth) and KI-HOA Keypad RTC options.
• KI-485 adapter for additional RS485 ports.

High power and system solutions

• High-power capability: up to 500 kW in a single module; freestanding DFS Series solutions and pre-engineered motor control systems for larger plants.
• Lightweight, compact footprint for easier integration; available pre-configured solutions with load switches, fuses and filters.

Who benefits

• Consultants & design engineers: specification-ready features for HVAC projects.
• Contractors: simplified installation and fast commissioning.
• Owners of commercial buildings: occupant comfort, energy savings and fast ROI.

Software
Commissioning and optimisation tools include Connect commissioning software and energy savings estimation utilities (software downloads available separately).

Warranty
Standard 5-year warranty (terms and conditions apply).

Technical specifications

• Model/Series: H300 (Specialist HVAC Drives).
• Power range: 1.1 kW to 2.8 MW.
• Supply voltages: 200/240 Vac ±10%, 380/480 Vac ±10%, 500/575 Vac ±10%, 500/690 Vac ±10% (varies by frame).
• Switching frequency: up to 16 kHz (typical for low audible noise).
• Max efficiency: up to 98%.
• Control: dynamic Volts/Hertz, advanced motor control, dual PID loops.
• Onboard comms: BACnet MS/TP, Modbus RTU; optional SI modules for BACnet IP, POWERLINK, EtherNet/IP, Modbus TCP/IP, PROFINET, PROFIBUS, DeviceNet, CANopen.
• Options: MCi200/MCi210 processors, SI-I/O extended I/O, Smartcard, SD card adapter, KI-Keypad Plus, KI-HOA Keypad RTC, KI-485 adapter.
• IP/UL ratings: IP20 standard; IP65 / NEMA4 / UL Type12 available; selected frames IP55.
• Operating ambient: -20 °C to 40 °C standard; up to 55 °C with derating.
• Standards: EN 61800-3, EN 61000-6-2, IEC 61800-5-1, IEC 60146-1-1, IEC 61131-2, EN 61000-6-3/6-4 (with optional EMC filters), UL 508C.