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Ecowatt
Drive K320 series
®
Sign
045P and lower
R, S, T
U, V, W
P1
Not available
Braking resistor
(+)
terminal 1
(-)
Braking resistor
PB
terminal 2
PE
Note:
Do not use asymmetrical motor cables. If there is a symmetrical grounding conductor in
the motor cable besides the conductive shielded layer, ground the grounding conductor on
the VFD end and motor end.
Braking resistor, braking unit and DC reactor are optional parts.
Route the motor cables, input power cables and control cables separately.
"Not available" means this terminal is not for external connection.
The PB is available for the 055P–132P models only when built-in braking units have been
selected for the 055P–75P models.
Kruger series VFDs cannot share the DC bus with CH series VFDs.
When sharing the DC bus, the VFDs must be the same in power and must be
simultaneously powered on or off.
In shared DC bus running mode, current balance on the VFD input side must be considered
during wiring, and equalizing reactors are recommended to be configured.
4.3.3 Wiring procedure of the main circuit terminals
1.
Connect the ground wire of the input power cable to the PE terminal of the VFD, connect
the 3PH input cable to the R, S and T terminals, and tighten up.
Terminal
055P–132P
Main circuit power input
VFD output
Not available
Braking unit
terminal 1
Braking resistor
terminal 1
/
Braking unit terminal 2
Braking resistor
terminal 2
Grounding resistor less than 10Ω
160P and higher
DC reactor
terminal 1
DC reactor
terminal 2
Braking unit
terminal 1
Not available
-24-
Installation guidelines
Function description
3PH AC input terminal,
connected to the grid.
3PH AC output terminal,
connected to the motor in
most cases.
P1 and (+) connect to
external DC reactor
terminals.
(+) and (-) connect to
external braking unit
terminals.
PB and (+) connect to
external braking resistor
terminals.
Grounding terminal for safe
protection; each machine
must carry two PE
terminals and proper
grounding is required.
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