Overview
The NES1 series are economical inverters engineered by Hitachi with simplicity in mind. The inverters are designed to fit into small spaces. Multiple units of NES1 series inverters can be installed side by side without any gaps.
As inverters typically require space at the top and bottom for ventilation, installers can opt for the FFM top cover which channels the airflow to the front. This effectively reduces the space at the top and bottom to as low as 2 cm in between inverters.
System technicians will have little difficulties in operating the NES1 series inverters. The inverter can be installed with either the standard operator panel or the option operator panel. The standard operator panel provides a single button for run, stop and reset while the option operator panel is used for configurations.
While the NES1 series features a simple design, the inverter is built to conform to global standards such as CE, UL, c-UL, and cTick. The inverter is also configurable to comply with both sink and source logic in operation.
System installers can enable the RS485 Modbus-RTU port on the NES1 series inverter to function as part of a larger network. This allows remote operation of the NES1 inverter. The communication cable is connected to the RS485 port on the standard or operator panel.
The NES1 series is built for optimal energy savings. Various functions are provided to minimize energy consumption when it’s operating. This makes the NES1 series suitable for applications like pumps, food processing machines, fans, and air conditioners.
Highlights of the NES1 series.
- Arithmetic operation and delay functions simplify external circuit.
- Source of frequency and run commands can be selected via intelligent terminal.
- Settings for 1st and 2nd motor can be selected via intelligent input.
- Momentary contact for RUN and STOP can be utilized.
- Upon the loss of analog signal, a preconfigured signal can be activated.
The NES1 is Hitachi's economical and simple to use speed control inverter solution in the popular HP range of 1/2 to 3 hp. The NE-S1 is designed with both OEMs and System Integrators needs in mind with its ultra-compact design, and pre-configured for out of the box integration in most applications.
NES1 Series Key Features
NES1-004LB - 1. NES1 Series FFM Top Cover
The NES1 series inverter can be fitted with an optional FFM top cover. The FFM top cover functions to channel ventilation to the front, thus reducing installation space at the top and bottom. Besides, the FFM also improve derating properties on certain models, improve capacitor lifespan, and prevent dust from entering the unit
NES1-004LB - 2. NES1 Series Operation and Programming
A notable feature on the NES1 series inverters is the ease of operation and programming. The inverter is fitted with a standard operator model which enables single-button operation for run, stop and reset. An optional operator panel with LED displays and buttons is used to program the parameters of the inverter.
NES1-004LB - 3. NES1 Series Terminal Functions
Terminals in the NES1 series are arranged strategically to facilitate installation. Besides the main terminals, the NES1 series also features terminals for control circuits. Control terminals on the NES1 series include frequency setting, input, output, and relays.
NES1-004LB - NES1 Series Other Features
NES1-004LB - 1. Control
- Control method : Line-to-line sine wave pulse-width modulation (PWM) control
- Output frequency range : 0.01 to 400Hz
- Frequency accuracy : Digital command :±0.01%, Analog command±0.4% (25 ±10˚C)
- Frequency setting resolution : Digital : 0.01Hz, Analog: (max frequency)/1000
- Voltage/Frequency Characteristic : V/f control,V/f variable (constant torque, reduced torque)
- Acceleration/deceleration time : 0.00 to 3000 sec. (linear, sigmoid), two-stage accel./decel.
- Starting torque : 100%/6Hz
- Carrier frequency range : 2.0 to 15kHz
- Protective functions : Over-current, Over-voltage, Under-voltage, Overload, Overheat, Ground fault at power-on, Input over-voltage, External trip, Memory error, CPU error, USP error, Driver error, Output phase loss protection
NES1-004LB - 2. Operator
- Operation key : 1 unified key for RUN/STOP/RESET ON : this key has function of "RUN"(regardless run command source setting (A002/A201).) OFF : this key has function of "STOP/RESET When optional operator is connected, operation from key is disabled
- Status LEDInterface : Control power supply LED (Red),LED during operation (yellow-green),Operation button operation LED (yellow-green),LED during tripping (Red), 4LED in total
NES1-004LB - 3. Operation
- Frequency setting
- Operator keypad(Option) : Up and Down keys / Value settings or analog setting via potentiometer on operator keypad
- External signal : 0 to 10 V DC or 4 to 20 mA
- FW/RV Run
- Operator Keypad(Option) : Run key / Stop key (change FW/RV by function command)
- External signal : FW Run/Stop (NO contact), RV set by terminal assignment (NC/NO), 3-wire input available
- Serial port : RS485 interface (Modbus RTU)
NES1-004LB - 4. Environment
- Operating temperature : -10 to 50℃(carrier derating required for aambient temperature higher than 40℃(022SB:temperature higher than 30℃)), no freezing.
- Storage temperature : -20 to 60˚C
- Humidity : 20 to 90% RH
- Vibration : 5.9mm/s2 (0.6G) 10 to 55Hz
- Location : Altitude 1,000 m or less, indoors (no corrosive gasses or dust)
NES1-004LB - 5. Other functions
- AVR (Automatic Voltage Regulation),
- V/f characteristic selection
- /decel. curve selection
- frequency upper/lower limit
- 8 stage multispeed
- PID control
- frequency jump
- external frequency input bias start/end
- jogging
- trip history
NES1-004LB - 6. Options
- Remote operator with copy function (WOP)
- Remote operator (OPE-SRmini, OPE-SR)
- Operator (NES1-OP)
- input/output reactors
- DC reactors, radio noise filters,
- LCR filter
- communcations cables (ICS-1,3)
Drive Performance Features:
NES1-004LB - Modes Of Operation:
- V / Hz (Constant or Variable)
- Torque Control
- Base Frequency Adjustable to Motor Specs
NES1-004LB - Performance Features:
- Pre-configured parameters
- Optional field installed operator display
- 3 wire Start Stop compatible
- RS-485 Modbus RTU standard
- PID, Logic and time delay functions built in
- Energy saving function standard
- CE/UL/cUL/c-Tick approvals
- Optional door mounted operator display
- Loss of signal protection
- Sink or Source input compatible
NES1-004LB - Control Terminals:
- Digital Inputs:
- Digital Outputs:
- 1 Form C relay with 2 contacts
- 1 Open Collector
- Analog Inputs:
- 1 voltage (0-10VDC) OR current (0-20mA)
- Analog Outputs:
- 1 Pulse Train (0 - 10 VDC / Max 3.6 kHz)
- Serial Communications:
- 2-Wire RS-485 Modbus RTU protocol for programming, monitoring and controlling
- Other:
- Speed Potentiometer Power Supply
- Signal Common
- Internal 24 VDC Power Supply rated for 5 mA per Input
NES1-004LB - Control Specifications:
- 0.5 - 400 Hz Operation
- 0 - 3000 second acceleration / deceleration
- Linear and sigmoid accelleration / decleration
- 100% at 6 Hz starting torque
- 2.0 to 15 KHz carrier frequency
NES1-004LB - Protective Features:
- Over-current
- Over-voltage
- Under-voltage
- Overload
- Overheat
- Ground fault at power-on
- Input over-voltage
- External trip
- Memory error
- CPU error
- USP error
- Drive error
- Output phase loss protection
NES1-004LB - 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!
NES1-004LB - Global Standards:
- CE
- UL (North America)
- cUL (Canada)
- C-Tick (Australia / New Zealand)
NES1-004LB - Environment:
- Altitude: 1,000 meters (3,300 feet)
- Ambient Temperature: -10 Degrees Celsius to 50 Degrees Celsius
- Storage Temperature: -20 Degrees Celsius to 60 Degrees Celsius
- Relative Humidity: 20% to 90% RH
