LS Industrial Systems Variable Speed Drives (Formerly LG Industrial)

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Stavert Series - Variable Speed Drives

iC5

Dynamic & Micro single phase inverter
Small capacity and high performance LS inverter iC5 series.
iC5 provides satisfies various customer needs with Modbus, PID control, Sensorless vector control, Auto Tuning, etc.

Features

Sensorless vector control
The iC5 adopts sensorless vector control algorithm, and it improves not only the torque control characteristics, but the speed controlability in an uncertain condition caused by the load variation as well.
Auto Tuning
The auto tuning algorithm in the iC5 sets the motor factors automatically that brings the traditional commissioning difficulties mainly in low speed by the load variation and the low torque generation to a settlement.
Highly efficient DSP chip
The iC5 adopts highly efficient DSP(Digital Signal Processing) chip to improve processing speed, flexibility, stability and etc.
PNP, NPN Dual Control Signal
The iC5 provides PNP and NPN signals for outside controllers. It works with 24Vdc regardless of the type of PLC or control signals.
Communication interface, Modbus-RTU
The iC5 provides the most popular communication interface, ModBus-RTU for remote control by PLC or other devices.
PID Control
PID process control is used in iC5 to make speed corrections quickly with a minimal amount of overshoot and oscillation for the control of flow, temperature, pressure and etc.

iG5A

User friendly compact inverter
Compact and economic LS inverter iG5 series has powerful and optimum performance.
iG5 series satisfies various customer needs with built-in communication, PID control, space vector, PWM, etc.

Features

Sensorless vector control
The built-in sensorless vector control provides the superb speed control and powerful high torque.
Ground-fault protection during running
the ground-fault protection of output terminal is possible during running.
Cooling fan control
by controlling the cooling fan, iG5A provides a virtually quiet environment according to the status of operation.
Auto carrier frequency control according to the temperature change
By monitoring the inverter inside temperature, the iG5A changes the carrier frequency automatically in case of over-temperature.
User-friendly interface
The 4 directions key provides easy handling and monitoring.
easy change of fan
iG5A is designed to be the fan changeable structure in preparation for a fan breakdown.
Built-in 485 communication
The built-in RS-485 communication supports remote control and monitoring between iG5A and other equipment.
Built-in PID control
The built-in PID function enables to control flow-rate, oil-pressure, temperature, etc without any extra controller.
Analog control from -10V to 10V
Inputting analog signals from -10V to 10V provides user-friendly operation.
PNP/NPN input
Both PNP and NPN inputs become possible and these enables to use the outer power. To do so, users will be given wider choices of selecting the controller.

iP5A

Fan & Pump exclusive use inverter
Starvert iP5A series adopt various functions as standard for operation of Fan and Pump.
iP5A's optimum performance for Fan & Pump, you can optimize system stability in user-environment and reduce system construction cost.

Features

Dual PID
When additional PID control or Cascade PID control is required, Dual PID provides users various uses of the system with only iP5A.
Multi Motor Control
The built-in algebra control function enables an inverter to control many motors without a controller so that user can take advantage of energy-saving and cost-down.
Sleep and Wake-Up
The built-in energy saving function makes inverter stop automatically when the capacity is very low.
Pre Heater
The pre heater function is built-in to prevent motor damage and inverter break-down caused from humidity.
Flying Start
When the inverter drives many ventilators or when the fan in a big load system turns due to a natural convection, iP5A operates the motor by searching the motor speed automatically.
Auto energy saving
iP5A provides the auto energy saving function by the optimal flux control which minimizes an energy loss caused by a change of the load.
Momentary power indication
Through indication function which displays momentary power and integrated power, Users can monitor the amount of energy consumption without additional equipment.
24 hours 365 days constant performance control
iP5A generates constant torque regardless of the input power change caused by a load change or seasonal factors.
Safety Stop
In case of the unpredicted stop like a power accident, the inverter enable a motor to stop safely using load's inertia energy to prevent secondary accident. (Parameter setting is necessary)

iS7

Selective v/f, sensorless vector or full flux control inverter
Dual Rated Constant torque / Variable Torque (0.75~75kW)

Standard features

• v/f, sensorless vector or full flux vector control
• 0.75 - 75kW , 3 Phase, 200 / 400V Class
• IP21 / IP54
• 40 MIPS high speed DSP
• Integrated RFI filter and/or DC reactor
• Built-in Modbus-RTU communications
• PLC like optional user sequence programming
• 128 x 64 pixel graphic LCD display
• Selectable NPN/PNP signal inputs
• -15% to +10% input voltage margin
• -10 to +50 Degrees C operating temperature
• -10 to +10 volt analog input
• 0 to +20mA analog input
• Plug-in type control terminals
• Built-in Brake chopper to 22kW
• 2nd motor sensorless control and parameter set
• I/O extension by various optional boards
• Optional fieldbus cards: Profibus, DeviceNet, CanOpen Ethernet.