High Voltage Frequency Inverter VSD Dedicated VFD with DC Reactor

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High Voltage Frequency Inverter VSD Dedicated VFD with DC Reactor

Customization:	Available
Application:	Dedicated VFD
Output Type:	Triple

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Product Description

Basic Information

Model NO.

EM618

Principle of Work

Vector Control Transducer

Switch Mode

PWM Control

Main Circuit Type

Voltage

Power Supply

Medium Voltage Variable-Frequency Drive

Transformation Link

AC-AC Variable-Frequency Drive

Nature of DC Power

Voltage Variable-Frequency Drive

Function

Engineering Cabinet VFD

Control Methods

V/F and Vector Control

Production Capacity

400,000 sets/Year

Product Description

⚙️ High Voltage Frequency Inverter VSD Dedicated VFD

Stable operation with low frequency and high torque: 0.5Hz/150% rated torque output smoothly for trouble-free startup.
Convenient man-machine interface (touch screen) for setting multi-segment running time and frequencies.
Excellent current limiting ability: Ensures the control cabinet does not trip during frequent load fluctuations.
Wide voltage input range with automatic voltage stabilization to meet torque requirements during grid drops.
Wide range of speed adjustment: Ideal for light-load high-speed and heavy-load low-speed equipment.
Integrated Modbus communication interface for real-time status monitoring.
Instantaneous power failure non-stop function with energy feedback capability.
Optimized compatibility: No need to enlarge capacity when adapted to motors of the same power.

Operation Guide & Parameters

Steps	Operation Content
Installation	Check the power of the special frequency conversion control cabinet and install as required.
Wiring	Wiring as per standard requirements for ball mill special frequency conversion control cabinets.
Pre-Power Check	Confirm input power supply circuit breaker; ensure grounding; verify R, S, T input and U, V, W output terminals; verify unloaded motor status.
Power-on Check	Verify no abnormal sound, smell, or smoke; check power indicator and operation panel status.
Parameter Settings	Restore factory values for initial operation or motor replacement before setting new parameters.
Motor Identification	Enter nameplate parameters correctly. Perform static self-identification if motor load cannot be disengaged.
Control Settings	Set rotation direction, acceleration/deceleration time, V/F curve, and torque boost based on load requirements.
Test Run	Conduct no-load test run followed by gradual load increase to confirm system stability.

Installation Instructions

Model	W	W1	H	H1	D	D1	d
EM618-185~220	800	756	2145	2055	650	390	13
EM618-250~355	800	756	2145	2055	650	390	13
EM618-400	800	756	2145	2055	700	440	13

Manufacturing Gallery

Frequently Asked Questions

What are the primary control methods for the EM618 series?

The EM618 supports both V/F (Voltage/Frequency) control and advanced Vector Control modes to suit different industrial requirements.

How does the VFD handle low-frequency operation?

It provides stable operation at low frequencies, capable of outputting 150% of the rated torque at just 0.5Hz, ensuring smooth startup for heavy machinery like ball mills.

Is the user interface easy to operate?

Yes, it features a convenient touch-screen man-machine interface that allows for multi-segment running time settings and real-time monitoring of voltage and current.

Can this VFD tolerate grid voltage fluctuations?

Absolutely. It features a wide voltage input range and automatic voltage stabilization to maintain torque output even when the grid voltage drops.

Does it support remote monitoring?

Yes, it is equipped with a Modbus communication interface, enabling users to check the working status and control the inverter remotely.

What happens during an instantaneous power failure?

The unit includes an instantaneous power failure non-stop function, which can automatically feed back electric energy to maintain torque output for a short duration.