Commissioning And Running - Kruger Ecowatt K320 Series Operation Manual

Ecowatt Drive K320 series
®
Do not carry the VFD by its front cover only as the cover may fall off.

The installation site must be away from children and other public places.
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When the installation site altitude exceeds 1000m, derate by 1% for every increase of 100m;
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when the installation site altitude exceeds 3000m, consult local Kruger dealer or office.
Use the VFD in proper environment. (For details, see "Installation environment".)

Prevent the screws, cables and other conductive parts from falling into the VFD.

As leakage current of the VFD during running may exceed 3.5mA, ground properly and

ensure the grounding resistance is less than 10Ω. The conductivity of PE grounding
conductor is the same as that of the phase conductor (with the same cross sectional area).
R, S and T are the power input terminals, and U, V and W are output motor terminals.

Connect the input power cables and motor cables properly; otherwise, damage to the VFD
may occur.

1.4.2 Commissioning and running

Disconnect all power sources applied to the VFD before terminal wiring,

and wait for at least the time designated on the VFD after disconnecting the
power sources.
High voltage presents inside the VFD during running. Do not carry out any

operation on the VFD during running except for keypad setup. For products
at voltage levels of 5 or 6, the control terminals form extra-low voltage
circuits. Therefore, you need to prevent the control terminals from
connecting to accessible terminals of other devices.
The VFD may start up by itself when P01.21=1. Do not get close to the VFD

and motor.
The VFD cannot be used as "Emergency-stop device".

The VFD cannot act as an emergency brake for the motor; it is a must to

install mechanical brake device.
During driving a permanent magnet SM, besides above-mentioned items,

the following work must be done before installation and maintenance:
1.
2. Ensure the permanent-magnet SM has been stopped, and the voltage on
3. After the permanent-magnet SM is stopped, wait for at least the time
4. During operation, it is a must to ensure the permanent-magnet SM cannot
Disconnect all the input power sources including main power and control
power.
output end of the VFD is lower than 36V.
designated on the VFD, and ensure the voltage between + and - is lower
than 36V.
run again by the action of external load; it is recommended to install
effective external brake device or disconnect the direct electrical
connection between permanent-magnet SM and the VFD.
-3-
Safety precautions