KW Module

The compact inverter

Flexible and functional

The DC link generated by the KE supplies the modular compact inverters KW with energy. For a long service life, a cold plate cools the component with either air or liquid. The KW has a slot for a separately available controller card (KW-R) – seven cards are available, two of them with additional functions for functional safety.

Quick conversion and upgrading

Thanks to the modular concept, the user can replace the controller card at any time or simply upgrade the system to new technology functions after an extended period of operation – without having to change the basic installation.

Double overload

A short-term overload capability provides more power during acceleration or deceleration. This can increase the machine output.

KWD variant –
The compact inverter D, two in one

Compact for small outputs. The double inverter KWD is a KW variant for two servo drives with a maximum output of 5 kVA. It combines two independent compact inverters in a compact housing with cold-plate cooling. The KWD controls two axes and halves the space requirement in the system while offering the same benefits as the KW compact inverter.

Modular cooling concept

Modular cooling concept

Modular cooling concept in coldplate technology air or liquid cooled

Dynamic and precise

Dynamic and precise

The KW digital compact inverter modules control drives in 4-quadrant operation precisely and with high dynamic response. They can be multifunctionally networked with the higher-level controller via various fieldbuses.

Product features

KW 2, 3, 5, 8, 10, 20, 40, 60, 100, 150, 200
KWD 1, 2, 5
Input voltage
540 ... 650 VDC
540... 650 VDC
Shut-off threshold
850 VDC
850 VDC
Rated output voltage
3 x 350 VAC for sinusoidal currents
3 x 350 VAC for sinusoidal currents
Output frequency
0…1200 Hz
0…1200 Hz
Rated output power
2 - 200 kVA
2 x 1, 2 x 2, 2 x 5 kVA
Maximum output power
4 - 340 kVA
2 x 2, 2 x 4, 2 x 10 kVA
Rated output current
3.3 - 330 A
2 x 1.65, 2 x 3.3, 2 x 8.3 A
Maximum output current (for 10s)
6.6 - 561 A
2 x 3.3, 2 x 6.6, 2 x 16.5 A
approx. 98%
Cooling type
Cold plate
Cold plate
Protective function
Motor overcurrent, short circuit, earth fault, device and motor overtemperature,I2T monitoring
Motor overcurrent, short circuit, earth fault, device and motor overtemperature, I2T monitoring
Switching frequency
8 (4) kHz
8 (4) kHz
Unit widths
55, 85, 170, 255, 425 mm
55 mm

Technical data and documents

Contact us for individual advice