Biến tần Danfoss/ Bien tan DanfossVLT® 2800 : đây là dòng đa năng, nhỏ gọn, giá rẻ nhưng có chất lượng rất tốt được các nhà sản xuất ưa chuộng, với dãy công suất nhỏ từ dưới 18.5Kw, phù hợp cho mọi lĩnh vực: băng chuyền, băng tải, quạt, tháp giải nhiệt, bơm,…

Các mã code 195N đã chuyển sang code 178B có thêm chức năng Brake (điện trở thắng) và Coated (mạch phủ keo bảo vệ)Xuất xứ: Danfoss Denmark (> 7,5KW), Danfoss China (<=7,5KW).

VLT^® 2800 Series

The VLT^® 2800 series is among the smallest multi purpose drives in the market. Designed for space saving side-by-side mounting. Choose to have it with e.g. Motor Coils, RFI filter, LC+1B filters.

The VLT^® 2800 is an advanced and versatile drive, easy to operate. The quick menu includes all parameters basically needed for commissioning the drive. Offers fast installation and service.

Features and benefits

Product Range
0.55 – 18.5 kW
(3 phase 380 – 480 V ± 10 %; 50/60 Hz)
0.37 – 1.5 kW
(Combined 1 and 3 phase 200 – 240 V ± 10 %; 50/60 Hz)
2.2 – 3.7 kW
(3 phase 200 – 240 V ± 10 %; 50/60 Hz)

Variable output frequency between 0 and 1000 Hz

Product safety
100 % short-circuit proof
100 % earth fault protection
Mains transient protection
Switching on input
Switching on output
Galvanic isolation
Designed according to EN 50178

Speed compensation precise stop
Better process control
Same stopping distance independent of initial motor speed

Precise stop
Interrupt controlled stop
Higher process repeatability
Well defined stopping

Counter stop
Accurate positioning
High frequency input (65 kHz)
24 V incremental encoder input
AB encoder input as option

Automatic motor tuning 
Perfect match between motor and drive
Measures the stator resistance (R_S) Better shaft performance
Measurements done without applying torque
Checks for missing motor phases

No derating at 45°C
The VLT^® 2800 will operate normally (no need for duration) in environment temperatures up to 45°C ^{24 hour average max. 40°C}

Features and benefits

Flexible mounting
Horizontal mountingVertical mounting
True side-by-side mounting
No deratingAlso applies to modules
Temperature controlled fan

Cold plate technology
Reduced heating in cabinet
Denser installation
Higher enclosure class cabinets
Protection against:
– Dust
– Dirt
– Humidity
Heat dissipates through the back of the drive

Communication
DeviceNet
ModBus RTU
Metasys N2
Profibus DP, optional

Fieldbus systems
Profibus DP 3 or 12 Mbit/sUp to 127 nodes per installation
Homepage: www.profibus.com

DeviceNet Up to 500 kbit/sUp to 64 nodes per installation
Homepage: www.odva.com

EMC filter and DC coils
Compliance with EMC Standards.
Built-in EN 55011 1A filter, 25 m screened cable.
No EMC disturbance.
EN 55011 1B filter available as module.
IT mains compatible version with RFI filter (up to 4 kW).
VLT 2880-2882 with RFI-switch.

Braking facilities
DC-braking – approx. 20% braking torque
AC-braking – approx. 20% braking torque
Dynamic braking
– Brake chopper built-in
– 160% braking torque

– LCP2 Alpha numeric display, with copy function
– MCT10 software