Description
The MCH Series drives were designed for the HVAC market and the specific requirements of Industrial and Commercial installations. We can provide the stand-alone drive or packaged with an input disconnect, VFD fusing and line reactor or a full 3-contactor bypass configuration that also includes motor fusing, auto/manual bypass and 24VDC power supply.
Couple this with the many features required by fan and pumping applications such as PID set-point control, …
- Variable Torque
- 1 through 250HP (0.18 - 185kW)
- Input voltages of 208V, 240V, 400V, 480V and 600V.
- NEMA Type 1, 12, and 4 Enclosures
Management of labor and material cost is essential in every HVAC installation. The MCH addresses both through aggressive pricing and "Contractor Ready" packaging.
- Standardized designs shorten lead times
- Oversized terminals simplify control wiring
- Generous space for wire runs
- Top and bottom conduit knockouts for easy entry
- Hinged doors provide easy access to all connections
- Plain English programming for smooth start-up
Technical documentation for the MCH Series Drive, and all AC Tech brand drives, is available in our Technical Library.
Superior Drive Performance:
MH4300B - Modes Of Operation:
- V / Hz Speed Control (Constant or Variable)
- Torque Control (Constant or Variable)
MH4300B - Performance Features:
- Carrier Freq. 2.5 - 14 kHz
- Independent Accel and Decel Ramps
- 120 Hz Maximum Output Freq.(650 Hz available)
- DC Injection Braking
- PID Setpoint Control
- Critical frequency avoidance bands
- Keypad
- Floating Point Control (MOP)
- 0-10 VDC Analog Reference (scalable)
- 4-20mA Analog Reference (scalable)
- Potentiometer
- 4 Programmable Preset Speed
- Serial Communications Speed Reference
MH4300B - Control Terminals:
- Digital Inputs (Active low, NPN)
- 1 Dedicated Stop
- 1 Dedicated Start
- 4 Programmable
- Digital Outputs:
- 2 Open Collector (NPN)
- 1 Form C Relay
- Analog Inputs:
- 1 voltage (0 - 10 VDC)
- 1 current (4 - 20 mA)
- Analog Outputs :
- 2 Outputs (0 - 10 VDC, 2 - 10 VDC can be converted to 4 - 20mA) proportional to speed and load
- Serial Communications:
- 2-Wire RS-485 Modbus RTU protocol for programming, monitoring and controlling
- Other:
- Speed Potentiometer Power Supply
- Signal Common
MH4300B - Technical Specifications:
- Ratings:
- 1 to 60 Hp at 240/200 Vac
- 1 to 250 Hp at 480/400 Vac
- 1 to 60 Hp at 590/480 Vac
- Accel time: 0.1 to 3600 seconds
- Decel time: 0.1 to 3600 seconds
- Current limit: adjustable up to 120%
- Carrier frequency: 2.5 kHz to 14 kHz
- Sleep Mode with adjustable threshold and time
- Adjustable Volts/Hz ratio
- DC injection braking: adjustable voltage and time
- Skip frequencies: two available with adjustable bandwidth (up to 10 Hz)
- Output frequency: 0-120 Hz
- Analog input filter: adjustable
- Start options:
- Start upon application of power
- Auto restart after fault (5 attempts)
- Flying restart to catch a spinning motor
- 500 ms power loss ride-through
- Warranty 2 Years
MH4300B - Protective Features:
- 120% overload capacity for 60 seconds
- Overvoltage & undervoltage faults
- Output short circuit fault
- Phase to ground fault
- Phase to phase fault
- Electronic thermal overload
- Current limit: adjustable up to 120%
- Overtemperature fault
- External fault input for safety interlocks
MH4300B - Popular Applications Include:
- Food Processing Machinery
- Packaging Machinery
- Material Handling Systems
- Conveyor Systems
- Pump Systems
- Fan Systems
- Milling Machines
- Hydraulic Systems
- HVAC Systems
- ... And many others!
MH4300B - Global Standards:
- UL (North America)
- cUL (Canada)
- CE Low Voltage Directive (EN61800-5-1) (Europe)
MH4300B - Environment:
- -20 to 70 degrees celsius storage temperature
- Type 1 (IP31) -10 – 50 degrees Celsius operating temperature
- Type 4 (IP65) -10 – 40 degrees Celsius operating temperature
- Type 12 (IP54) -10 – 40 degrees Celsius operating temperature
- Ambient humidity: Less than 95%, (non‑condensing)
- Maximum altitude: 3300 Feet (1000 meters) without derating
